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Journal of Coordination Chemistry Volume 62, 2009 - Issue 9
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Original Articles

Synthesis, structures and magnetic properties of nickel bis(dithiolene) complexes with [Fe(qsal)2]+

Xiao-Ming Li State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
,
Yong Ji State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
,
Cai-Feng Wang State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
,
Jing-Lin Zuo State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, ChinaCorrespondence[email protected]
&
Xiao-Zeng You State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, China
Pages 1544-1552 | Received 17 Jul 2008, Accepted 08 Aug 2008, Published online: 25 Mar 2009
 
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Abstract

Two new compounds containing the possible Fe(III) spin-crossover cation, [Fe(qsal)2]+ (qsalH = N-(8-quinolyl)salicylaldimine), and nickel bis(dithiolene) anions have been synthesized. Both are 1 : 1 salts [Fe(qsal)2][Ni(dddt)2] · CH3CN · CH3OH (1) and [Fe(qsal)2][Ni(pddt)2] (2) (dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate; pddt = 6,7-dihydro-5H-1,4-dithiepin-2,3-dithiolate). They have been characterized by X-ray crystal structure determination, elemental analysis, UV-Vis spectra and magnetic susceptibility measurements. The UV–Vis spectra are dominated by [Ni(L)2]− (1, L = dddt; 2, L = pddt). Magnetic studies show antiferromagnetic interaction in 1 from intermolecular S···S contacts and π–π stacking interactions, while the antiferromagnetic interaction in 2 is very weak.

Acknowledgments

This work was supported by the Major State Basic Research Development Program (2006CB806104) and the National Science Foundation of China (Grant 20725104).

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