Extended Network Thiocyanate- and Tetracyanoethanide-Based First-Row Transition Metal Complexes
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https://figshare.com/articles/dataset/Extended_Network_Thiocyanate_and_Tetracyanoethanide_Based_First_Row_Transition_Metal_Complexes/2486431
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资源简介：
Linear chain thiocyanate complexes of M(NCS)2(OCMe2)2 (M = Fe, Mn, Cr) composition have
been prepared and structurally, chemically, and magnetically characterized.
Fe(NCS)2(OCMe2)2 exhibits metamagnetic-like
behavior, and orders as an antiferromagnet at 6 K. The Mn and Cr compounds
are antiferromagnets with Tc of 30 and
50 K, respectively, with J/kB = −3.5 (−2.4 cm–1) and −9.9
K (−6.9 cm–1), respectively, when fit to
one-dimensional (1-D) Fisher chain model (H = −2JSi·Sj). Co(NCS)2 was prepared by a new synthetic route,
and powder diffraction was used to determine its structure to be
a two-dimensional (2-D) layer with μN,S,S-NCS motif,
and it is an antiferromagnet (Tc = 22
K; θ = −33 K for T > 25 K). M(NCS)2(OCMe2)2 (M = Fe, Mn) and Co(NCS)2 react with (NBu4)(TCNE) in dichloromethane to
form M(TCNE)[C4(CN)8]1/2, and in
acetone to form M[C4(CN)8](OCMe2)2 (M = Fe, Mn, Co). These materials possess μ4-[C4(CN)8]2– that form 2-D
layered structural motifs, which exhibit weak antiferromagnetic coupling.
Co(TCNE)[C4(CN)8]1/2 behaves as a
paramagnet with strong antiferromagnetic coupling (θ = −50
K).
创建时间：
2012-09-17
