Synthesis and Crystal Structure of a New Ion-Pair Complex Based on [Ni(tdas)2]2− Anion and Triphenylphosphinium Cation

• DOI: 10.1007/s10870-009-9557-5
• Publication Date: 2009-03-24T13:34:30Z
• Authors: Hong-rong Zuo; Jun Tian; Xing Chen; Qian Huang; Jia-rong Zhou; Xiao-ping Liu; Chun-lin Ni; Xue-lei Hu
• Keywords: 01 natural sciences; 0104 chemical sciences

A new ion-pair complex, bis(1-benzyltriphenylphosphinium) bis(1,2,5-thiadiazole-3,4-dithiolato)nickelate(II), [BzTPP]2[Ni(tdas)2](1), has been prepared and characterized by elemental analyses, UV, IR, MS spectrum, molar conductivity and single crystal X-ray diffraction. The title complex crystallizes in the triclinic space group P-1, a = 9.098(1) A, b = 9.666(1) A, c = 29.573(3) A, α = 83.81(1)°, β = 81.97(1)°, γ = 78.83(1)°, V = 2,517.5(4) A3, Z = 2. The unit cell contains two [BzTPP]+ and two halves of [Ni(tdas)2]2− anions in which the anion exhibits a quasi-planar structure. The [BzTPP]+ cation adopts a conformation where four phenyl rings are twisted to the C–C–P reference plane. The weak cation–cation C–H···π, π···π interactions and anion–cation C–H···N hydrogen bonds between the anion and cation play an important role in the stacking and stabilizing of the title complex. The title new ion-pair complex, bis(1-benzyltriphenylphosphinium) bis(1,2,5-thiadiazole-3,4-dithiolato)nickelate(II), [BzTPP]2[Ni(tdas)2](1), contains two [BzTPP]+ and two halves of [Ni(tdas)2]2− anions in which the weak cation–cation C–H···π, π···π interactions and anion−cation C–H···N hydrogen bonds between the anion and cation play an important role in the stacking and stabilizing of the title complex.