Hydroxy-substituted closo-dodecaborate anion [B12H11OH]2-in silver(I) and lead(II) complexation in the presence of azaheterocyclic ligands L

A systematic study of the reactivity of the hydroxy-substituted derivative of the closo-dodecaborate anion [B12H11OH]2- has been carried out in silver(I) and lead(II) complexation, including the presence of organic ligands 2,2MODIFIER LETTER PRIME-bipyridyl (bipy), 1,10-phenanthroline (phen) and 2,2 & PRIME;-bipyridylamine (bpa). A number of salts and silver(I) and lead(II) complexes of various composition and structures have been synthesized and characterized. The structures of polymeric {Ag2(bipy)2[B12H11OH]}n and binuclear [Ag2(bpa)2[& mu;-B12H11OH]] silver(I) complexes, dimeric binuclear lead(II) complex [Pb(bipy)2[& mu;-B12H11OH]]2, as well as salts CsNO3 & BULL;Cs2[B12H11OH] and (Hbpa)2[B12H11OH] have been determined by X-ray diffraction. It has been found that in the complexes obtained, the coordination of the boron cluster anion by metal atoms is realized both due to the formation of threecenter two-electron MHB bonds with the BH groups of the polyhedron and with the participation of the oxygen atom of the substituent in metal coordination; cocrystallization of several bond and positional isomers is observed in the structures of silver(I) complexes.

Automated summary

A systematic investigation on the reactivity of hydroxy-substituted derivative of closo-dodecaborate anion [B12H11OH]2- in silver(I) and lead(II) complexation, with the presence of various organic ligands, has been conducted. Several salts and complexes of silver(I) and lead(II) with different compositions and structures have been synthesized and characterized. X-ray diffraction analysis revealed the structures of polymeric {Ag2(bipy)2[B12H11OH]}n, binuclear [Ag2(bpa)2[μ-B12H11OH]] silver(I) complexes, dimeric binuclear lead(II) complex [Pb(bipy)2[μ-B12H11OH]]2, as well as salts CsNO3•Cs2[B12H11OH] and (Hbpa)2[B12H11OH]. The coordination of the boron cluster anion by metal atoms is achieved through the formation of three-center two-electron MHB bonds with the BH groups of the polyhedron and the involvement of the oxygen atom of the substituent in metal coordination, with co-crystallization of several bond and positional isomers observed in the structures of silver(I) complexes.