Bismuth and Titanium Phosphinates: Isolation of Tetra-, Hexa- and Octanuclear Clusters

摘要

The reaction of organobismuth precursors with trityl-H-phosphinic acid in varying reaction conditions afforded colorless crystals, whose single crystal X-ray characterization revealed the formation of monomer {(Ph3Bi)[(Ph3C)(H)PO2](2)}center dot (3)/(2) (CH3CN)(2 center dot)(1)/(2) H2O (1) and butterfly shaped tetranuclear cluster Bi-4 (mu(3)-O)(2) [(Ph3C)(H)-(PO2)](8)center dot 2CH(2)Cl(2 center dot)(1)/(2) CH3CN center dot 2H(2)O (2). The reaction of titanium isopropoxide with two different phosphinic acids trityl-H-phosphinic acid and cycP(O)(OH) led to isolation of cubane type octahedral complex {Ti-8 (mu(2)-O)(8) (mu(2)-OH)(4) [(Ph3C)(H)PO2](12)}[3C(7)H(8)] (3) and hexanuclear complex Ti-6(mu(2) -cycPO(2))(9)(mu(2)-O)(6) (mu(2)-OH)(3)center dot 4CH(3)CN center dot 4H(2)O (4) respectively.