Simon Peter Crabtree

Synthesis and X-ray crystal structures of tetraalkyl diphosphine complexes of silver(I), [Ag2 {Bu2tP(CH2)3PBi2t}2][BF4]2 · 2 CH2Cl2 and [Ag2 {Bu2tP(CH2)2PBu2t}(H2O)2][BF4]2

Abstract The title complexes [Ag2(dbp)2(BF4)2 (1) and [Ag2(dbpe)(H2O)2](BF4)2 (2), obtained as unexpected by-products while using AgBF4 to eliminate Cl− from rhodium complexes, were isolated and characterised by single-crystal X-ray diffraction. 1 was also prepared directly. The Ag atoms are bridged by two (1) or one (2) diphosphine ligands and have a linear P, P or P, H2O coordination. According to the 31P{1H} spectra, the cation of 1 retains this structure in solution. Weak Ag…F interactions with anions (in 2 ‘supported’ by OH…F hydrogen bonds) form two additional interaction bridges in 1 or link the Ag atoms in a catena-fashion in 2 and complement the AgI coordination to a trigonal-bipyramidal arrangement (with one equatorial site void).

η1- and η2-benzene coordination in [Ag(C6D6)3BF4]

Abstract The title complex with one η2 and two η1 deuterobenzene and one monodentate BF4 ligands was isolated as a by-product in the reaction between [(dppe)RhCl]2 and EtCl in C6D6, in the presence of AgBF4 and its X-ray crystal structure determined.

η 1 - and η 2 -benzene coordination in [Ag(C 6 D 6 ) 3 BF 4 ]

Abstract The title complex with one η2 and two η1 deuterobenzene and one monodentate BF4 ligands was isolated as a by-product in the reaction between [(dppe)RhCl]2 and EtCl in C6D6, in the presence of AgBF4 and its X-ray crystal structure determined.

η1- and η2-benzene coordination in [Ag(C6D6)3BF4]1Dedicated to Professor Ken Wade on the occasion of his 65th birthday.1

Abstract The title complex with one η2 and two η1 deuterobenzene and one monodentate BF4 ligands was isolated as a by-product in the reaction between [(dppe)RhCl]2 and EtCl in C6D6, in the presence of AgBF4 and its X-ray crystal structure determined.