Syntheses, Crystal Structures, and Properties of Two New Ion-Pair Compounds Based Upon bis(1,2,5-thiadiazole-3, 4-dithiolate)nickelate Anion and Substituted Benzyltriphenylphosphium Cations

Abstract

Two new ion-pair compounds based on [Ni(tdas)₂]²⁻ (tdas = 1,2,5-thiadiazole-3,4-dithiolate) anion with substituted benzyl triphenylphosphium cation, [2ClBzTPP]₂[Ni(tdas)₂](1) and [4ClBzTPP]₂[Ni(tdas)₂](2), have been prepared and characterized by UV, IR, ESI-MS, molar conductivity, and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analyses indicate that 1 crystallizes in the triclinic space group P–1, while 2 crystallizes in the monoclinic space group P2₁/n. Some intramolecular contacts such as C−H···Cl, C−H···S, C−H···N or S···Cl weak interactions observed in 1 and 2 consolidate the crystal packing and generate a 3D network structure.

Keywords:

• bis(1,2,5-thiadiazole-3,4-dithiolate)nickelate anion
• crystal structures
• substituted benzyltriphenylphosphium
• weak interactions

Acknowledgments

The authors thank the Science and Technology Project (No. 2011B080701026) from Guangdong Science and Technology Department, the Guangdong Natural Science Foundation (No. 10151064201000022), the university students’ innovative experimental project (No. 1056411140) from Education Department of Guangdong Province, and the key Academic Program of the 3rd phase “211 Project” of South China Agricultural University (No. 2009B010100001) for financial support of this work.