Stereochemistry cis and trans

The principal application of NMR with compounds of the platinum group metals has been in the study of their stereochemistry. Cis and trans isomers of the Pt(PR3)2L2 and Pt(PR3)2X4 type are identified easily because of the difference in the coupling constants as discussed above. 

The stereochemistry (cis and trans) of the methoxylated furans has been examined [309]. In most cases the rrawj -isomers are the major products. 

The two types of polymer configurations are cis and trans. In stereochemistry, cis and trans show the relationship between two ligands attached to separate atoms that are connected by a double bond (or are contained in a ring). The two ligands are located in cis position to each other if they lie on the same side of a plane". If they are on opposite sides their relative position is described as trans (see Fig. 2.2.1 and Fig. 2.2.12). Cis and trans isomers are chemical identical but differ in their physical properties, e.g. in their thermal behaviour. ... 

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See also in sourсe #XX -- [ , , ]

See also in sourсe #XX -- [ , , ]

See also in sourсe #XX -- [ , , ]

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