What is the difference between structural isomer, geometric isomers, and enantiomers?
Q. I have the definitions and I have looked them up and attempted to draw examples, but I still get confused. This is a muddy topic for me.
Asked by bubba - Wed Jul 29 21:07:20 2009 - - 1 Answers - 0 Comments
A. Structural isomers have the same molecular formula but different structural formulas - the connectivity of the atoms is different - as in ethanol and diethyl ether. Geometric isomers have the same molecular formula and the same structural formula, but have different spatial arrangements. Two common geometrical isomerisms are cis-trans and chirality (optical activity). Enantiomers are a pair of geometric isomers that are mirror images - they are isomers of a chiral compound
Answered by David B - Wed Jul 29 21:47:06 2009
Q. I have the definitions and I have looked them up and attempted to draw examples, but I still get confused. This is a muddy topic for me.
Asked by bubba - Wed Jul 29 21:07:20 2009 - - 1 Answers - 0 Comments
A. Structural isomers have the same molecular formula but different structural formulas - the connectivity of the atoms is different - as in ethanol and diethyl ether. Geometric isomers have the same molecular formula and the same structural formula, but have different spatial arrangements. Two common geometrical isomerisms are cis-trans and chirality (optical activity). Enantiomers are a pair of geometric isomers that are mirror images - they are isomers of a chiral compound
Answered by David B - Wed Jul 29 21:47:06 2009
What is the positional isomer for 2-hexanol?
Q. i know how to make a positional isomer diagram for 1-hexanol, because the OH is at the end, but how do i draw 2-hexanol, with the OH branching out of the second CH2?
Asked by SURVIVALsp1 - Wed Dec 20 22:56:09 2006 - - 3 Answers - 0 Comments
A. In chemistry, isomers are molecules with the same chemical formula and often with the same kinds of bonds between atoms, but in which the atoms are arranged differently. That is to say, they have different structural formulae. Many isomers share similar if not identical properties in most chemical contexts. This should not be confused with a nuclear isomer, which involves a nucleus at different states of excitement. A simple example of isomerism is given by propanol: it has the formula C3H8O (or C3H7OH) and two isomers Propan-1-ol (n-propyl alcohol; I) and Propan-2-ol (isopropyl alcohol; II) Note that the position of the oxygen atom differs between the two: it is attached to an end carbon in the first isomer, and to the center carbon in… [cont.]
Answered by roger m - Thu Dec 21 01:23:30 2006
Q. i know how to make a positional isomer diagram for 1-hexanol, because the OH is at the end, but how do i draw 2-hexanol, with the OH branching out of the second CH2?
Asked by SURVIVALsp1 - Wed Dec 20 22:56:09 2006 - - 3 Answers - 0 Comments
A. In chemistry, isomers are molecules with the same chemical formula and often with the same kinds of bonds between atoms, but in which the atoms are arranged differently. That is to say, they have different structural formulae. Many isomers share similar if not identical properties in most chemical contexts. This should not be confused with a nuclear isomer, which involves a nucleus at different states of excitement. A simple example of isomerism is given by propanol: it has the formula C3H8O (or C3H7OH) and two isomers Propan-1-ol (n-propyl alcohol; I) and Propan-2-ol (isopropyl alcohol; II) Note that the position of the oxygen atom differs between the two: it is attached to an end carbon in the first isomer, and to the center carbon in… [cont.]
Answered by roger m - Thu Dec 21 01:23:30 2006
how do you tell the difference between a trans-isomer and a cis-isomer just by looking at the structure?
Q. ive been given an iron(III) complex that is known to contain two acetylacetonate ions, acac-, and two water molecules in its coordination sphere. i have to say whether the structure is trans-isomer or cis-isomer. how do i tell?
Asked by Nic - Sat May 2 22:54:41 2009 - - 2 Answers - 0 Comments
A. In cis, they will both be on the same side of the metal. In trans, they will be directly across from one another.
Answered by unknown - Sat May 2 22:59:56 2009
Q. ive been given an iron(III) complex that is known to contain two acetylacetonate ions, acac-, and two water molecules in its coordination sphere. i have to say whether the structure is trans-isomer or cis-isomer. how do i tell?
Asked by Nic - Sat May 2 22:54:41 2009 - - 2 Answers - 0 Comments
A. In cis, they will both be on the same side of the metal. In trans, they will be directly across from one another.
Answered by unknown - Sat May 2 22:59:56 2009
Can you draw a structural isomer of hexane that has an asymmetric carbon?
Q. Explain.
Asked by izzie - Wed Nov 19 19:38:34 2008 - - 1 Answers - 0 Comments
A. ...CH2 - CH3 ...| CH3 - C - CH2 - CH3 ...| ...H the central carbon that is attached to the CH3, H, and 2 ethyl groups has no planes of symmetry.
Answered by m w - Wed Nov 19 19:46:19 2008
Q. Explain.
Asked by izzie - Wed Nov 19 19:38:34 2008 - - 1 Answers - 0 Comments
A. ...CH2 - CH3 ...| CH3 - C - CH2 - CH3 ...| ...H the central carbon that is attached to the CH3, H, and 2 ethyl groups has no planes of symmetry.
Answered by m w - Wed Nov 19 19:46:19 2008
How do you tell if if a complex compound has a linkage isomer?
Q. How do you tell if if a complex compound has a linkage isomer?
Asked by mike m - Fri Apr 13 19:17:36 2007 - - 1 Answers - 0 Comments
A. Well, mostly from experience. A linkage isomer is one in which a certain group is bonded in a different way. For example, SCN, thiocyanate can be bonded through the sulfur or the nitrogen. --SCN vs --NCS
Answered by OSUChemist - Sat Apr 14 00:13:02 2007
Q. How do you tell if if a complex compound has a linkage isomer?
Asked by mike m - Fri Apr 13 19:17:36 2007 - - 1 Answers - 0 Comments
A. Well, mostly from experience. A linkage isomer is one in which a certain group is bonded in a different way. For example, SCN, thiocyanate can be bonded through the sulfur or the nitrogen. --SCN vs --NCS
Answered by OSUChemist - Sat Apr 14 00:13:02 2007
What is the difference between an isomer and a congener?
Q. What is the difference between an isomer and a congener?
Asked by Melis__A - Thu Nov 15 10:40:40 2007 - - 1 Answers - 1 Comments
A. Nothing really, but isomer is the preferred term when speaking in chemical language. In technical, or legal documentation - such as patents the word congener is more often seen, as it applies to EVERY possible isomer that a structure may have, so it is best to use it in these situations cover the specifications of an invention the most broadly.
Answered by Dr Dave P - Thu Nov 15 11:03:30 2007
Q. What is the difference between an isomer and a congener?
Asked by Melis__A - Thu Nov 15 10:40:40 2007 - - 1 Answers - 1 Comments
A. Nothing really, but isomer is the preferred term when speaking in chemical language. In technical, or legal documentation - such as patents the word congener is more often seen, as it applies to EVERY possible isomer that a structure may have, so it is best to use it in these situations cover the specifications of an invention the most broadly.
Answered by Dr Dave P - Thu Nov 15 11:03:30 2007
How can you tell if a complex compound has an optical isomer?
Q. How can you tell if a complex compound has an optical isomer?
Asked by mike m - Fri Apr 13 19:20:08 2007 - - 2 Answers - 0 Comments
A. If it is an organic compound, check whether it is chiral, i.e. if any carbon atom or any other atom in this molecule has all groups attached to it different -- like H, CH2, N, etc. This has an exception, when one side of the molecule rotates light in one plane and the other half in exactly opposite plane so as to have no net optical activity. Such a compound is called a meso compound. This can be checked by observing the way of rotation of light by the various chiral heads in the molecule ( a bit difficult) another method is to draw a line running through the molecule and check whether the 2 halves resemble each other exactly (i.e. mirror images). If they do then it is optically inactive. One more way is to check whether it is super… [cont.]
Answered by Nakul Bansal - Fri Apr 13 19:35:50 2007
Q. How can you tell if a complex compound has an optical isomer?
Asked by mike m - Fri Apr 13 19:20:08 2007 - - 2 Answers - 0 Comments
A. If it is an organic compound, check whether it is chiral, i.e. if any carbon atom or any other atom in this molecule has all groups attached to it different -- like H, CH2, N, etc. This has an exception, when one side of the molecule rotates light in one plane and the other half in exactly opposite plane so as to have no net optical activity. Such a compound is called a meso compound. This can be checked by observing the way of rotation of light by the various chiral heads in the molecule ( a bit difficult) another method is to draw a line running through the molecule and check whether the 2 halves resemble each other exactly (i.e. mirror images). If they do then it is optically inactive. One more way is to check whether it is super… [cont.]
Answered by Nakul Bansal - Fri Apr 13 19:35:50 2007
Would a straight-chain isomer or branched-chain isomer of octane have a lower boiling point?
Q. Can you explain in terms of intermolecular forces?
Asked by sarahhbeex33 - Mon May 25 13:54:02 2009 - - 3 Answers - 0 Comments
A. yeah.. Straight chained isomers have higher boiling points, due to higher surface area. This means that the amount of van der waals forces that the compound can make increases. So more energy is needed.
Answered by unknown - Mon May 25 14:29:13 2009
Q. Can you explain in terms of intermolecular forces?
Asked by sarahhbeex33 - Mon May 25 13:54:02 2009 - - 3 Answers - 0 Comments
A. yeah.. Straight chained isomers have higher boiling points, due to higher surface area. This means that the amount of van der waals forces that the compound can make increases. So more energy is needed.
Answered by unknown - Mon May 25 14:29:13 2009
What is a chemical formula that can be used for an example for an isomer?
Q. What is a chemical formula that can be used for an example for an isomer?
Asked by Man on the Moon - Wed Sep 3 15:05:34 2008 - - 2 Answers - 0 Comments
A. Take C2H6O. It could represent ethanol (CH3CH2OH) or dimethyl ether (CH3OCH3).
Answered by HPV - Wed Sep 3 15:22:29 2008
Q. What is a chemical formula that can be used for an example for an isomer?
Asked by Man on the Moon - Wed Sep 3 15:05:34 2008 - - 2 Answers - 0 Comments
A. Take C2H6O. It could represent ethanol (CH3CH2OH) or dimethyl ether (CH3OCH3).
Answered by HPV - Wed Sep 3 15:22:29 2008
what is the difference between structual isomer and geometric isomer?
Q. please give me any examples
Asked by Sam D - Sun Sep 9 11:10:34 2007 - - 2 Answers - 0 Comments
A. structural isomer-compounds having the same molecular formula but different structual formulae. geometrical isomer-compounds having the same molecular formula and same structual formula but difference in the spatial arrangement of atoms due to restricted rotation of double bond or single bond in cyclic compounds.
Answered by Swapna P - Sun Sep 9 11:56:51 2007
Q. please give me any examples
Asked by Sam D - Sun Sep 9 11:10:34 2007 - - 2 Answers - 0 Comments
A. structural isomer-compounds having the same molecular formula but different structual formulae. geometrical isomer-compounds having the same molecular formula and same structual formula but difference in the spatial arrangement of atoms due to restricted rotation of double bond or single bond in cyclic compounds.
Answered by Swapna P - Sun Sep 9 11:56:51 2007
Which of the following compounds is a correctly-named isomer of pentane?
Q. Which of the following compounds is a correctly-named isomer of pentane? A) 2-ethylpentane B) isobutylethane C) 2-methylbutane D) 2-methyloctane E) 3-methylbutane
Asked by Dawn W - Sat Jan 17 01:53:01 2009 - - 4 Answers - 0 Comments
A. The answer is C.) 2-Methylbutane
Answered by runninjay09 - Sat Jan 17 01:59:58 2009
Q. Which of the following compounds is a correctly-named isomer of pentane? A) 2-ethylpentane B) isobutylethane C) 2-methylbutane D) 2-methyloctane E) 3-methylbutane
Asked by Dawn W - Sat Jan 17 01:53:01 2009 - - 4 Answers - 0 Comments
A. The answer is C.) 2-Methylbutane
Answered by runninjay09 - Sat Jan 17 01:59:58 2009
What is the third isomer of c4h8 after butene, 2 methyl propene?
Q. What is the third isomer of c4h8 after butene, 2 methyl propene?
Asked by Sarah M - Sat Oct 31 14:20:21 2009 - - 2 Answers - 0 Comments
A. Cyclobutane is one There are also two isomers of 2-butene, cis- and trans-
Answered by unknown - Sat Oct 31 14:24:44 2009
Q. What is the third isomer of c4h8 after butene, 2 methyl propene?
Asked by Sarah M - Sat Oct 31 14:20:21 2009 - - 2 Answers - 0 Comments
A. Cyclobutane is one There are also two isomers of 2-butene, cis- and trans-
Answered by unknown - Sat Oct 31 14:24:44 2009
Draw the structural formula for an alcohol that is an isomer of diethyl ether.?
Q. please be as clear as possible, than you.
Asked by Betty B - Wed May 28 03:17:55 2008 - - 3 Answers - 0 Comments
A. Di ethyl ether is CH3-CH2-O-CH2-CH3 or C2H5-O-C2H5 It is a C4 ether - C4H10 O Alcohols with C4H9OH will be Butanol. Butanol has two isomers n-butanol, and 2-butanol CH3-CH2-CH2-CH2-OH or C4H9-OH - n-butanol and CH3CH2CHOHCH3 or C3H6-OH-CH3 (2-butanol)
Answered by Abhijit Purohit - Wed May 28 11:54:41 2008
Q. please be as clear as possible, than you.
Asked by Betty B - Wed May 28 03:17:55 2008 - - 3 Answers - 0 Comments
A. Di ethyl ether is CH3-CH2-O-CH2-CH3 or C2H5-O-C2H5 It is a C4 ether - C4H10 O Alcohols with C4H9OH will be Butanol. Butanol has two isomers n-butanol, and 2-butanol CH3-CH2-CH2-CH2-OH or C4H9-OH - n-butanol and CH3CH2CHOHCH3 or C3H6-OH-CH3 (2-butanol)
Answered by Abhijit Purohit - Wed May 28 11:54:41 2008
IUPAC name of the alkene isomer of C5H10 that contains six different hydrogens but only five different carbons
Q. What is the IUPAC name, if possible please explain how their are 5 different carbons?
Asked by Elvis P - Mon Sep 24 14:57:09 2007 - - 3 Answers - 0 Comments
A. 1-pentene
Answered by Liz - Wed Sep 26 11:27:40 2007
Q. What is the IUPAC name, if possible please explain how their are 5 different carbons?
Asked by Elvis P - Mon Sep 24 14:57:09 2007 - - 3 Answers - 0 Comments
A. 1-pentene
Answered by Liz - Wed Sep 26 11:27:40 2007
Which isomer can react with acidified potassium dichromate(VI) to produce butanone?
Q. That's all.
Asked by r3alrage - Thu Jul 17 09:59:12 2008 - - 3 Answers - 0 Comments
A. If you're talking about (R)- and (S)-isomers of 2-butanol, then Chloralhydrate is right. If the isomers you're talking about are 1-butanol, 2-butanol, isobutyl alcohol, and tert-butyl alcohol, then only 2-butanol, CH3CHOH.CH2CH3, will produce 2-butanone
Answered by steve_geo1 - Thu Jul 17 10:26:24 2008
Q. That's all.
Asked by r3alrage - Thu Jul 17 09:59:12 2008 - - 3 Answers - 0 Comments
A. If you're talking about (R)- and (S)-isomers of 2-butanol, then Chloralhydrate is right. If the isomers you're talking about are 1-butanol, 2-butanol, isobutyl alcohol, and tert-butyl alcohol, then only 2-butanol, CH3CHOH.CH2CH3, will produce 2-butanone
Answered by steve_geo1 - Thu Jul 17 10:26:24 2008
What is the chemical structure of a pentane isomer?
Q. What is the chemical structure of a pentane isomer?
Asked by Kis - Sun Apr 12 22:16:02 2009 - - 1 Answers - 0 Comments
A. CH3-CH2-CH2-CH2-CH3...n-p entane ...CH3 ...| CH3-CH2-CH2-CH3... isopentane ...CH3 ...| CH3-CH2-CH3... neopentane ...| ...CH3
Answered by m w - Sun Apr 12 22:30:21 2009
Q. What is the chemical structure of a pentane isomer?
Asked by Kis - Sun Apr 12 22:16:02 2009 - - 1 Answers - 0 Comments
A. CH3-CH2-CH2-CH2-CH3...n-p entane ...CH3 ...| CH3-CH2-CH2-CH3... isopentane ...CH3 ...| CH3-CH2-CH3... neopentane ...| ...CH3
Answered by m w - Sun Apr 12 22:30:21 2009
Which isomer would have the largest heat of combustion?
Q. a) cyclohexane b) methylcyclopentane c) ethylcyclobutane d) since they are all isomers, they would have the same heat of combustion
Asked by Greg C - Thu Sep 25 15:14:57 2008 - - 1 Answers - 0 Comments
A. c) Because it's the smallest ring! (I don't know why though). Now I do. It's the most strained so has the highest potential energy and less stable. This increased energy is given out in the combustion. if you look at the link of the incorrect answer below this. there is a table which show the heat of combustion for cyclic alkanes. Look at the heat of combustion per CH2 unit. you'll see that the cyclopropane has a larger number then the others and that it decreases as the ring gets less strained. This is for the reason I've given above.
Answered by Lordcoup - Thu Sep 25 15:28:40 2008
Q. a) cyclohexane b) methylcyclopentane c) ethylcyclobutane d) since they are all isomers, they would have the same heat of combustion
Asked by Greg C - Thu Sep 25 15:14:57 2008 - - 1 Answers - 0 Comments
A. c) Because it's the smallest ring! (I don't know why though). Now I do. It's the most strained so has the highest potential energy and less stable. This increased energy is given out in the combustion. if you look at the link of the incorrect answer below this. there is a table which show the heat of combustion for cyclic alkanes. Look at the heat of combustion per CH2 unit. you'll see that the cyclopropane has a larger number then the others and that it decreases as the ring gets less strained. This is for the reason I've given above.
Answered by Lordcoup - Thu Sep 25 15:28:40 2008
What is the IUPAC name of the non-cyclic isomer of the compound with molecular formula C6H14?
Q. What is the IUPAC name of the non-cyclic isomer of the compound with molecular formula C6H14?
Asked by flatfoot - Wed Sep 24 04:22:34 2008 - - 3 Answers - 0 Comments
A. I hope that I have made a better job of interpreting you question this time!!! You ask for isomers of hexane that are non cyclic: Hexane has five isomers Hexane, CH3CH2CH2CH2CH2CH3, a straight chain of six carbon atoms. 2-Methylpentane (Isohexane), CH3CH(CH3)CH2CH2CH3, a five-carbon chain with one methyl branch on the Second. 3-Methylpentane, CH3CH2CH(CH3)CH2CH3, a five-carbon chain with one methyl branch on the third. 2,3-Dimethylbutane, CH3CH(CH3)CH(CH3)CH3, a four-carbon chain with one methyl branch on the second and third. 2,2-Dimethylbutane(neohex ane) , CH3C(CH3)2CH2CH3, a four-carbon chain with two methyl branches on the second.
Answered by Trevor H - Wed Sep 24 05:41:21 2008
Q. What is the IUPAC name of the non-cyclic isomer of the compound with molecular formula C6H14?
Asked by flatfoot - Wed Sep 24 04:22:34 2008 - - 3 Answers - 0 Comments
A. I hope that I have made a better job of interpreting you question this time!!! You ask for isomers of hexane that are non cyclic: Hexane has five isomers Hexane, CH3CH2CH2CH2CH2CH3, a straight chain of six carbon atoms. 2-Methylpentane (Isohexane), CH3CH(CH3)CH2CH2CH3, a five-carbon chain with one methyl branch on the Second. 3-Methylpentane, CH3CH2CH(CH3)CH2CH3, a five-carbon chain with one methyl branch on the third. 2,3-Dimethylbutane, CH3CH(CH3)CH(CH3)CH3, a four-carbon chain with one methyl branch on the second and third. 2,2-Dimethylbutane(neohex ane) , CH3C(CH3)2CH2CH3, a four-carbon chain with two methyl branches on the second.
Answered by Trevor H - Wed Sep 24 05:41:21 2008
What is an optical and geometrical isomer?
Q. What is an optical and geometrical isomer?
Asked by kitty - Mon Jan 14 21:07:26 2008 - - 4 Answers - 0 Comments
A. An optical is relating to sight. Designed to assist sight. Using light sensitive devices. Geometrical isomer is a chemical compound having the same molecular formula as another but different geometric configuration, as when atoms or groups of atoms are attached in different spatial arrangements on either side of a double bond or other rigid bond. Good luck.
Answered by X-Woman - Mon Jan 14 21:24:44 2008
Q. What is an optical and geometrical isomer?
Asked by kitty - Mon Jan 14 21:07:26 2008 - - 4 Answers - 0 Comments
A. An optical is relating to sight. Designed to assist sight. Using light sensitive devices. Geometrical isomer is a chemical compound having the same molecular formula as another but different geometric configuration, as when atoms or groups of atoms are attached in different spatial arrangements on either side of a double bond or other rigid bond. Good luck.
Answered by X-Woman - Mon Jan 14 21:24:44 2008
why is the isomer of pentane called as 2-methylbutane?
Q. why pentane then butane?i cant understand, please show the similarities
Asked by carol jane r - Thu Dec 20 21:40:28 2007 - - 4 Answers - 0 Comments
A. Pentane is an alkane that has 5 carbon atoms. 2-methylebutane is an isomer of pentane. Meaning its structural formula is different than pentane but its molecular formula is similar. So, 2-methylebutane has 5 carbon atoms too. But, its structure is different than pentane, thus the structure is called 2-methylebutane. Structure of pentane: Structure of 2-methylebutane:
Answered by msafiullah - Thu Dec 20 21:55:10 2007
Q. why pentane then butane?i cant understand, please show the similarities
Asked by carol jane r - Thu Dec 20 21:40:28 2007 - - 4 Answers - 0 Comments
A. Pentane is an alkane that has 5 carbon atoms. 2-methylebutane is an isomer of pentane. Meaning its structural formula is different than pentane but its molecular formula is similar. So, 2-methylebutane has 5 carbon atoms too. But, its structure is different than pentane, thus the structure is called 2-methylebutane. Structure of pentane: Structure of 2-methylebutane:
Answered by msafiullah - Thu Dec 20 21:55:10 2007
From Yahoo Answer Search: 'Isomer'
Thu Nov 19 14:58:04 2009 [ refresh local cache ]
[Hide]▼
news.google.com
Linex Legal (registration)
Even though the claimed compound, was a simple positional isomer of the prior art, the Federal Circuit found that the difference was not obvious. ...
biomedreports.com
Justin M. Hall
Fri, 19 Jun 2009 10:01:00 GM
Pure . Isomer. (Fusilev) v. Inactive . Isomer. (generic leucovorin): The inactive . isomer. tends to compete with the active . isomer. and leads to more variability of biological outcome. This means, patients tend to react to the inactive . isomer. ...
[Hide]▲
