Syntheses, crystal structures, weak interactions, spectra, and thermal properties of two new ion-pair complexes based on di(nitriledithiolate)nickel(II) anion and 4-nitrobenzyl isoquinolinium

• Published in: Inorganic and nano-metal chemistry 2017-04, Vol.47 (4), p.639-646
• Main Authors: Liu, Yin, Wang, Bing-Wu, Guo, Zi-Qi, Liao, Xiao-Lan, Chen, Yang-Li, Zhang, Zheng, Zhou, Jia-Rong, Ni, Chun-Lin
• Format: Article
• Language: English
• Subjects: 4-nitrobenzyl isoquinolinium; crystal structures; Di(nitriledithiolate)nickel(II) anion; thermal properties; weak interactions
• ISSN: 2470-1556; 2470-1564
• DOI: 10.1080/15533174.2016.1186088

The chemical preparation, spectroscopic characterization, and crystal structures of two new ion-pair complexes, [4NO 2 BzIQl] 2 [Ni(mnt) 2 ](1) and [4NO 2 BzIQl] 2 [Ni(i-mnt) 2 ] (2) ([4NO 2 BzIQl] + = 4-nitrobenzyl isoquinolinium, mnt 2− = maleonitriledithiolate and i-mnt 2− = iso-maleonitriledithiolate), have been reported. Both 1 and 2 crystallize in the triclinic system in space group P-1. The cations of 1 stack into a 1D alternating column through C-H···π, π···π and p···π interactions, while the [4NO 2 BzIQl] + cations (C) and [Ni(i-mnt) 2 ] 2− anions (A) of 2 stack into another 1D alternative column with a A-CC-A-CC-A sequence. Weak N···Ni, C-H···Ni, C-H···N, C-H···S, and p···π interactions observed in 1 and 2 consolidate a 3D network structure. Thermal analysis reveals that 1 and 2 are stable up to 211°C and 208°C, respectively, and the final decomposition product of two complexes is nickel oxide.