The Stereochemistry of Complex Inorganic Compounds.

The Chelate Rings.

“…The compounds are saturated and incapable of adding further coordinating addenda; for example, copper glycine will not take up ammonia (134). 4. Absorption spectra curves are identical with analogous compounds known not to be cyclic (133, 138).…”

“…The determination of the configuration of these isomers has been handicapped by their completely saturated character. The introduction of optically active acids into the complexes has thrown some light on the subject and has given rise to some very interesting cases of optical activity involving partial asymmetric syntheses (137,141,164,4).…”

“…Considerable evidence points to the fact that 2,2'-biphenol (I) is itself coordinated (34). The univalent thallium (II) and diethyl-thallium (III) derivatives are also apparently coordinated compounds, 4 Diiminobiuret tends to form the compound…”

Stereochemistry and Reaction Mechanisms of Hexacovalent Inorganic Complexes.

“…The organic chemist has been rather successful with his interpretation of the data in terms of probable reaction mechanisms. That this task for the coordination chemist is expected to be somewhat more difficult, can be ascertained from the following statement of Bailar (6):…”

The Sterochemistry of Square Complexes.

“…"Platinum salts combine with an enormous number of inorganic and organic groups or molecules and many of these salts have been known for a hundred years, yet the constitution of the isomeric diammines of the type [PtA2X2] is still a subject of controversy" (17). "It is still an open question whether the experimental work (relating to planar and tetrahedral structures) has been correctly interpreted or not or whether some elements can assume more than one structure" (5). "In any event, the problem presented by these salts (certain allegedly optically active platinous salts) does not seem to be finally cleared up" (135).…”