Enforcing Ising-like magnetic anisotropy via trigonal distortion in the design of a W(v)-Co(ii) cyanide single-chain magnet.

Authors :: Zhang YZ
Dolinar BS
Liu S
Brown AJ
Zhang X
Wang ZX
Dunbar KR
Source :: Chemical science [Chem Sci] 2017 Nov 13; Vol. 9 (1), pp. 119-124. Date of Electronic Publication: 2017 Nov 13 (Print Publication: 2018).
Publication Year :: 2017
Abstract: A new octacyanotungstate(v) based single chain magnet {[(Tpm)Co(DMF)W(CN) <subscript>8</subscript> ] <subscript>2</subscript> [Co(DMF) <subscript>4</subscript> ]·2DMF} <subscript> n </subscript> ( 1 , Tpm = 1,1,1-trispyrazoylmethane), with an effective barrier of 39.7(3) cm <superscript>-1</superscript> is reported. The Ising-like magnetic anisotropy of the chain originates from the nearly parallel local orientations of the Co(ii) ions with the source of the uniaxial magnetic anisotropy being a trigonal distortion of the octahedral environment with the fac -tridentate capping Tpm ligand.

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