Reactions of tetrakis[bis(trimethylsilyl)methyl]digallane(4) with carboxylic acids - Substituent exchange and bridging of the Ga-Ga bond by two carboxylato groups

Autor(en): Uhl, W
Hahn, I
Reuter, H 
Stichwörter: ALUMINUM ALUMINUM BOND; carboxylato bridges; Chemistry; Chemistry, Multidisciplinary; COMPOUND; CRYSTAL-STRUCTURES; DIGALLANE; GALLIUM-GALLIUM BONDS; INDIUM-INDIUM; RADICAL-ANION; REDUCTION
Erscheinungsdatum: 1996
Herausgeber: VCH PUBLISHERS INC
Journal: CHEMISCHE BERICHTE-RECUEIL
Volumen: 129
Ausgabe: 12
Startseite: 1425
Seitenende: 1428
Zusammenfassung: 
Yellow tetrakis[bis(trimethylsilyl)methyl]digallane(4) 1 reacts with two equivalents of the carboxylic acids RCOOH (R = -C6H5, -p-BrC6H4, -3,5-Me(2)C(6)H(3), -CMe(3)) to yield almost quantitatively colorless products in which two bis(trimethylsilyl)methyl groups are replaced by two carboxylato ligands. As shown by a crystal structure determination with the 4-bromo-phenyl derivative (3), the Ga-Ga bond is bridged by both carboxylato groups in a chelating manner. The Ga-Ga distance is shortened to 238.5(2) pm (1: 254.1(1) pm) and the coordination number of the Ga atoms increased to four.
ISSN: 00092940
DOI: 10.1002/cber.19961291204

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