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Original Articles

Two New Ion-Pair Complexes Based on Bis(iso-maleonitriledithiolate)nickelate(II) Anion and Substituted Pyridinium/Quinolinium: Syntheses, Weak Interactions, and 3D Structures

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Pages 1492-1500 | Received 26 Feb 2012, Accepted 25 Dec 2012, Published online: 25 Aug 2013
 

Abstract

Two new ion-pair complexes, based on [Ni(i-mnt)2]2– (i-mnt = isomaleonitriledithiolate) anion, [Bz-4-MePy]2[Ni(i-mnt)2]([Bz-4- MePy]+ = 1-benzyl-4′-methylpyridinium) (1) and [Bz-4-MeQl]2 [Ni(i-mnt)2]([Bz-4-MeQl]+ = 1-benzyl-4′-methylquinolinium) (2), were obtained and characterized. The most obvious structure feature of 1 and 2 is that the [Ni(i-mnt)2]2– anions form a 1D chain through C···N or C···C short interactions between the i-mnt ligands, and the [Bz-4-MeQl]+ cations of 2 form a 2D structure through the π···π stacking interactions between the aromatic rings. The C–H···N and C–H···Ni hydrogen bonds observed in the anions and cations consolidate the stacking of the molecules and give rise to a 3D network structure.

Acknowledgments

This work has been partially supported by the Science and Technology Project (No. 2012B010200041, No. 2011B080701026) from Guangdong Science and Technology Department, the key Academic Program of the 3rd phase “211 Project” of South China Agricultural University (No. 2009B010100001), and the university students’ innovative experimental project (No.1056411140) from Education Department of Guangdong Province.

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