Magnetochemistry at Low Temperatures: Crystal Structure and Magnetic Susceptibility of [CoCl₂(3,5-lutidine)₂]

Abstract

The crystal structure of [CoCl2(3,5-lutidine)2] along with magnetic susceptibility measurements over the temperature interval 50 mK-4.2 K are reported. The space group is P21/c, with a = 13.075(2), b = 15.903(4), and c = 8.035(1) Å; the angle β = 101.00(2)°. There are four molecules in the unit cell. The molecules are distorted tetrahedra (the Cl-Co-Cl angle is 120.29°) and well-isolated from each other. The magnetic anisotropy of single crystals is large and due to the zero-field splitting. The data may be fit by the spin-Hamiltonian parameters gnorm of matrix = 2.1±0.1, g⊥ = 2.1±0.1 and 2D/kB = (10.5± 1) K. Measurements of the susceptibility of a polycrystalline powder sample show that magnetic ordering does not occur down to 50 mK. This is consistent with the crystal structure. © 1988.

Department(s)

Chemistry

International Standard Serial Number (ISSN)

0304-8853

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1988 Elsevier, All rights reserved.

Publication Date

01 Jan 1988

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