Isomers in the Chemistry of Germanium Coordination Compounds

Abstract

Abstract:The coordination chemistry of germanium covers quite bulk fields, as shown by a survey covering the crystallographic and structural data of over two hundred examples. About ten percent of those complexes exist as distortion isomers and are summarised. These are discussed in terms of the coordination around the germanium(I), germanium(II) and germanium(IV) atoms, and correlations are drawn between donor atoms, bond distances and interbond angles. Distortion isomers differing only by degree of distortion in Ge -L and L -Ge -L angles by far prevail. There is an example, which contains within one crystal distortion and coordination isomers, which is rarity.

Isomers in the Chemistry of Germanium Heterometallic Clusters

“…This review and its precursors [2,3] give the first overall survey of the structural data for the isomers of germanium complexes. In the chemistry of germanium coordination compounds [2] two types of isomers were found: distortion (twenty examples) and configuration (two examples).…”

“…In the chemistry of germanium coordination compounds [2] two types of isomers were found: distortion (twenty examples) and configuration (two examples). In the chemistry of organogermanium derivatives [3] were also found two types of isomers: a distortion (over forty examples) and ligand isomers (two examples).…”

“…This review and its precursors [2,3,[19][20][21][22][23] give the first overall survey of the structural data for isomer complexes of the group IV metals.…”

“…The three metal atoms form an unsymmetrical triangle with the mean Ge-Ru bond lengths in cis isomer of 2.469 Å (molecule 1) and 2.478 Å (molecule 2), and 2.477(1) Å in trans-isomer. The Ge -Ru-Ge angles are 90.5(1) and 91.5 (2) o in cis-isomer. Each Ge atom is a tetrahedrally coordinated (GeCl 3 Ru) and Ru atom is an octahedrally coordinated (RuC 4 Ge 2 ) (Table 2).…”

“…Numerous structural studies have been carried out, including almost two hundred and fifty heterometallic germanium derivatives [1] with sixteen isomeric examples noted. In [2] we analysed and classified over twenty isomers in the chemistry of germanium coordination compounds. Another almost fifty isomeric examples in the chemistry of organogermanium compounds were also characterised and classified [3].…”