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Explains what geometric (cis / trans) isomerism is and how you recognise the possibility of it in a molecule. ... Geometric isomerism (also known as cis-trans isomerism or E-Z isomerism) is a form of stereoisomerism. This page explains what stereoisomers are and how you recognise the possibility of geometric isomers in...
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www.chemguide.co.uk/basicorg/isomerism/geometric.html
www.chemguide.co.uk/basicorg/isomerism/geometric.html
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CIS - TRANS ISOMERS OF ALKENE ... As a consequence of the double bond, some alkene compounds exhibit a unique type of isomerism. Rotation around a single bond occurs readily, while rotation around a double bond is restricted. The pi bond prevents rotation because of the electron overlap both above and below the plane of...
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www.elmhurst.edu/~chm/vchembook/209cistrans.html
www.elmhurst.edu/~chm/vchembook/209cistrans.html
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Cis-Trans Isomerization of Retina ... Conversion of Vitamin A into Cis-Retinal:; Vitamin A, trans-retinol, is carried to the rods in the eyes from ... Isomerization of Retinal: Photochemical events in vision involve the protein opsin and the cis/trans isomers of retinal. The cis-retinal fits into a receptor site of opsin.
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www.elmhurst.edu/~chm/vchembook/533cistrans.html
www.elmhurst.edu/~chm/vchembook/533cistrans.html
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A form of isomerism associated with compounds containing a double bond. Like groups in such compounds may be either on the same side of the plane of the double bond (cis-form) or on opposite sides (trans-form).
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www.daviddarling.info/encyclopedia/C/cis-trans_isomeris...
www.daviddarling.info/encyclopedia/C/cis-trans_isomerism.html
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Stereoisomeric olefins or cycloalkanes (or hetero-analogues) which differ in the positions of atoms (or groups) relative to a reference plane: in the cis-isomer the atoms are on the same side, in the trans-isomer they are on opposite sides. ... IUPAC > Gold Book > alphabetical index > C > cis-trans isomers...
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goldbook.iupac.org/C01093.html
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Definition of cis-trans isomer with German, Dutch, French, Italian, and Spanish translations and search. Pronunciation sound files. ... (chemistry) either of a pair of geometric isomers, one having the cis- and one having the trans- configuration...
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www.allwords.com/word-cis-trans+isomer.html
www.allwords.com/word-cis-trans+isomer.html
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Cis- and trans- terminology ... There are two ways to name these types of isomers, one is the cis / trans method described here, the other is E/Z and it's described on the next page. 1,2-disubstituted alkenes are described as:
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www.chem.ucalgary.ca/courses/350/orgnom/alkenes/alkenes...
www.chem.ucalgary.ca/courses/350/orgnom/alkenes/alkenes-02.html
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Slide 17 of 23...
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www.chem.utoronto.ca/coursenotes/CHM240Y/temp/lect5w/sl...
www.chem.utoronto.ca/coursenotes/CHM240Y/temp/lect5w/sld017.htm
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The 11-cis-retinal is an angulated molecule, while all-trans retinal is a straight molecule. This makes the chemical unstable. Rhodopsin breaks down into several intermediate compounds, but eventually (in less than a second) forms metarhodopsin II (activated rhodopsin).
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www.howstuffworks.com/eye2.htm
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