isomers's Usage Examples:

In general, isomers boil at about the same temperature, as is shown by the isomeric esters CH1802: Methyl octoate..

Recent researches have shown that the law originally proposed by Kopp - " That the specific volume of a liquid compound (molecular volume) at its boiling-point is equal to the sum of the specific volumes of its constituents (atomic volumes), and that every element has a definite atomic value in its compounds " - is by no means exact, for isomers have different specific volumes, and the volume for an increment of CH 2 in different homologous series is by no means constant; for example, the difference among the esters of the fatty acids is about 57, whereas for the aliphatic aldehydes it is 49.

It is found that isomers have nearly the same critical volume, and that equal differences in molecular content occasion equal differences in critical volume.

Typical formulae are (R denoting 0, S or NH): Isomers are possible, for the condensation may be effected on the two carbon atoms symmetrically placed to the hetero-atom; these isomers, however, are more of the nature of internal anhydrides.

Formula (4) is symmetrical and based on Kekule's formula: it is in full accord with the syntheses and decompositions of the naphthalene nucleus and the number of isomers found.

Thus in the tri-substitution derivatives six isomers, and no more, are possible when two of the substituents are alike; for instance, six diaminobenzoic acids, C 6 H 3 (NH 2) 2 000H, are known; when all are unlike ten isomers are possible; thus, ten oxytoluic acids, C 6 H 3 -CH 3.

This tetrahedral configuration is based on the existence of only one methylene dichloride, two being necessary if the carbon valencies were directed from the centre of a plane square to its corners, and on the existence of two optical isomers of the formula C. A.

In the case of tetra-substituted compounds, thirty isomers are possible when all the groups are different.

Di-derivatives x x x p v as " v as s Here we have assumed the substituent groups to be alike; when they are unlike, a greater number of isomers is possible.

Three isomers exist, the orthoand para-compounds being the chief products of the direct nitration of toluene.

Synonyms:

compound, chemical compound,

Antonyms:

simple, rough, smooth,