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Polyol Metal Complexes. Part 55 Germanes with Alkylenedioxy Substituents
Author(s) -
Klüfers Peter,
Vogler Constance
Publication year - 2007
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200700060
Subject(s) - hexacoordinate , germanium , steric effects , chemistry , diol , coordination sphere , metal , atom (system on chip) , stereochemistry , crystallography , medicinal chemistry , polymer chemistry , organic chemistry , silicon , computer science , embedded system
Within this work five novel germanes with alkylenedioxy substituents derived from 1,2‐diols have been synthesized and structurally characterized. Various coordination patterns from tetra‐ to hexacoordination were determined. Both open‐chain and cyclic 1,2‐diols such as 1,2‐ethandiol (Ethd), 1,1′‐bicyclohexyl‐1,1′‐diol (Bhxd), cis ‐oxolane‐3,4‐diol (AnEryt) and cis ‐1,2‐cyclopentanediol ( cis ‐1,2‐Cptd) were used. Tetracoordination of the germanium atom in the crystalline state appears to be restricted to sterically demanding substituents. In general, the tendency of germanium to extend its coordination sphere to build penta‐ or hexacoordinate compounds is demonstrated. It is also shown that germanium is able to compensate a lack of substituents by the formation of dimeric structures.