Multicenter Interactions in Lead(II) Coordination Compounds with BnHn2- (n=6, 10, 12) Cluster Anions and Their Derivatives

The structures of earlier synthesized Pb(II) complexes with closo-BnHn2- (n = 6, 10, 12) anions and their derivatives are analyzed in terms of M-B and M-H-B distances and MHB angles. In all of the complexes, the metal-ligand bonds are due to pure (MHB)-, (MHB)-(2), or (MHB)(3)-type multicenter interactions or their combination. The existence of straight M-B bonds (M-B(H) type) along with the above interactions was deduced only for the lead(II) complex with the closo-hexaborate anion.