Synthesis, crystal structures and magnetic properties of three complexes containing bis(maleonitriledithiolate) copper(II) anion and meta-substituted benzyl isoquinolinium cations

Three complexes, [3RBzIQl] 2 [Cu(mnt) 2 ] (mnt 2− = maleonitriledithiolate; [3RBzIQl] + = 1-(3′-R-benzyl)isoquinolinium, R = Cl ( 1 ), I ( 2 ) or NO 2 ( 3 )), have been prepared and characterized by spectroscopic and physicochemical methods as well as by X-ray crystallography. The [Cu(mnt) 2 ] 2−...

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Bibliographic Details
Published in:	Transition metal chemistry (Weinheim) 2016-04, Vol.41 (3), p.249-259
Main Authors:	Zhang, Zheng, He, Wan-Er, Liao, Xuan, Chen, Xiao-Min, Lin, Xue-Ni, Yao, Zi-Mei, Ni, Chun-Lin, Zhou, Jia-Rong, Yang, Le-Min, Zhang, Yao-Mou
Format:	Article
Language:	eng
Subjects:	Catalysis Chemistry Chemistry and Materials Science Inorganic Chemistry Organometallic Chemistry Physical Chemistry
Online Access:	Get full text
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Summary:	Three complexes, [3RBzIQl] 2 [Cu(mnt) 2 ] (mnt 2− = maleonitriledithiolate; [3RBzIQl] + = 1-(3′-R-benzyl)isoquinolinium, R = Cl ( 1 ), I ( 2 ) or NO 2 ( 3 )), have been prepared and characterized by spectroscopic and physicochemical methods as well as by X-ray crystallography. The [Cu(mnt) 2 ] 2− anions formed a 1D chain in complex 1 , a dimer in 2 and a sheet structure in 3 through C···N and/or N···N interactions. The neighboring dimers of the cations arranged in a boat-type pattern stack into columns through weak π···π, Cl···π or O···π, C–H···π interactions. The anions and cations stack together into a columnar structure with a ···A–CC–A–CC–A··· sequence. The magnetic susceptibilities measured in the temperature range 2.0–300 K reveal that complex 1 undergoes a change from weak ferromagnetic to antiferromagnetic exchange around 132 K, while 2 shows antiferromagnetic behavior and 3 shows a weak ferromagnetic interaction when the temperature is lowered.
ISSN:	0340-4285 1572-901X