Square‐Planar Coordinated Polyanions of Palladium, Platinum, and Gold Stannaborate [SnB₁₁H₁₁]²⁻ Coordination Chemistry

Abstract

Abstract The tetrasubstituted polyanions of platinum, palladium, and gold [M(SnB 11 H 11 ) 4 ] x− (x=6, M=Pd, Pt; x=5, M=Au) have been prepared and characterized by single‐crystal X‐ray diffraction, elemental analysis, IR, Raman, 11 B, and 119 Sn heteronuclear NMR spectroscopy. In the case of the platinum derivative [Bu 3 MeN] 6 [Pt(SnB 11 H 11 ) 4 ] ( 2 ) 119 Sn Mössbauer spectroscopy has been carried out. The isolated salts are stable towards moisture and air and the complexes 2 and 3 were treated with 1,3‐bis(diphenylphosphino)propane (dppp) to give the respective substitution products [Bu 3 MeN] 2 [(dppp)M(SnB 11 H 11 ) 2 ] (M=Pd, Pt).