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The Formation of Macrocyclic Compounds Containing Two Ga–Ga Bonds by the Reaction of Tetraalkyldigallane(4) R 2 Ga–GaR 2 [R = CH(SiMe 3 ) 2 ] with Dicarboxylic Acids
Author(s) -
Uhl Werner,
Spies Thomas,
Saak Wolfgang
Publication year - 1998
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199811)1998:11<1661::aid-ejic1661>3.0.co;2-t
Subject(s) - chemistry , trimethylsilyl , dicarboxylic acid , cyclohexane , butane , medicinal chemistry , hexane , polymer chemistry , stereochemistry , organic chemistry , catalysis
Tetrakis[bis(trimethylsilyl)methyl]digallane(4) 1 reacts with dicarboxylic acids like 1,4‐benzenedi(methylcarboxylic) acid, 1,4‐cyclohexanedicarboxylic acid, 1,6‐hexanedicarboxylic acid, and 1,4‐butanedicarboxylic acid (adipinic acid) by the release of two equivalents of bis(trimethylsilyl)methane and the retention of the Ga–Ga bond. Products are formed, in which the very short Ga–Ga bonds (237.7 pm on average) are bridged by two carboxylato groups. Two of these moieties are connected in each compound by two spacers (dimethylbenzene, cyclohexane, hexane, or butane) to form macrocyclic compounds with up to 22 atoms in the resultant heteroatomic rings. The dimeric form is also observed in solution. For comparison, the synthesis and structure of the product of the reaction of 1 with 1‐adamantanecarboxylic acid is included, which also has the Ga–Ga bond (239.1 pm) bridged by two carboxylato groups.