Strong electron-accepting methylviologen dication confined in magnetic hosts: synthesis, structural characterization, charge-transfer and magnetic properties of {(MV)2[Ni(SCN)5].Cl.2H2O}n and {(MV)[m(N3)2(SCN)2]}n (M=Mn, Co)

Dalton Transactions : an International Journal of Inorganic Chemistry
Zhan-Feng JuJie Zhang

Abstract

Three hybrid host-guest compounds {(MV)2[Ni(SCN)5].Cl.2H2O}n (1), {(MV)[Mn(N3)2(SCN)2]}n (2) and {(MV)[Co(N3)2(SCN)2}n (3) (where MV2+ = methylviologen dication) have been obtained by self-assembly methods and characterized by X-ray crystallography, spectral methods and magnetic measurements. Compound 1 shows a quasi-two-dimensional structure which is formed by novel single thiocyanate-bridged Ni(II) chains connected through S...S interactions. Compounds 2 and 3 are isostructural, containing single micro(1,3)-azide bridged Mn(II)/Co(II) square layers. MV2+, as a strong electron-acceptor and a template, is embedded between the anionic layers in all three compounds. The charge-transfer (CT) interactions between MV2+ and the anionic hosts have been revealed by structural analysis and UV-vis diffuse reflection spectroscopy. The magnetic studies of the compounds show antiferromagnetic interactions between adjacent metal ions (J = -34.52(7) cm(-1) for 1, J = -3.90(2) cm(-1) for 2 and J = -10.96(6) cm(-1) for 3).

References

Jan 1, 1995·Acta Crystallographica. Section A, Foundations of Crystallography·R H Blessing
Jul 2, 1997·Inorganic Chemistry·Hiroki OshioTasuku Ito
Oct 24, 2001·Inorganic Chemistry·Zhongjia TangArnold M. Guloy
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Jan 19, 2006·Journal of the American Chemical Society·Xin-Yi WangSong Gao

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Citations

May 8, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu MaCai-Ming Liu
Dec 21, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiu-Mei ZhangEn-Qing Gao
Feb 12, 2011·Physical Chemistry Chemical Physics : PCCP·Yang ChenJian-Ping Lang
Jun 6, 2017·Acta Crystallographica. Section C, Structural Chemistry·Rikako Tanaka, Nobuyuki Matsushita

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