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Silver Salts of the Weakly Coordinating Anion [Me 3 NB 12 Cl 11 ] –
Author(s) -
Jenne Carsten,
Wegener Bianca
Publication year - 2018
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.201800358
Subject(s) - chemistry , mesitylene , pyridine , homoleptic , steric effects , crystal structure , ligand (biochemistry) , metathesis , inorganic chemistry , molecule , tricyclohexylphosphine , crystallography , medicinal chemistry , benzene , organic chemistry , polymer , phosphine , polymerization , biochemistry , receptor , metal , catalysis
Silver(I) salts of weakly coordinating anions (WCA) are commonly applied as oxidizing agents or halide abstracting reagents. The feasibility of a particular silver salt for such applications strongly depends on the “nakedness“ of the silver cation. In this study the reactivity of Ag[Me 3 NB 12 Cl 11 ] in different solvents was investigated. Crystal structures of a variety of complexes were obtained. In several crystal structures two boron clusters are bridged by Ag–Cl contacts. This leads to polymeric structures (e.g. for Ag[Me 3 NB 12 Cl 11 ]·0.5CH 2 Cl 2 and Ag[Me 3 NB 12 Cl 11 ]·SO 2 ). Sterically demanding aromatics like mesitylene, pyrene, and acenaphthene are η 1 ‐ or η 2 ‐bonded to the silver atom and also form coordination polymers, whereas benzene as a ligand leads to a molecular structure, in which two benzene molecules are η 2 ‐coordinated to the silver cation. In contrast, strong σ donor ligands like pyridine and triphenylphosphine give homoleptic silver complexes and thus cation and anion are separated. Furthermore, the ability of Ag[Me 3 NB 12 Cl 11 ] for performing metathesis reactions was investigated. The reaction with Au I Cl gave the [Au(NCMe) 2 ] + cation.