Cobalt and zinc halide complexes of 4-chloro and 4-methylaniline: Syntheses, structures and magnetic behavior

被引：5

作者：

Chellali, Jonathan E. ^{[1
]}

Keely, Cailyn ^{[1
]}

Bell, Graham ^{[1
]}

Dimanno, Kimberly L. ^{[1
]}

Tran Tran ^{[1
]}

Landee, Christopher P. ^{[2
]}

Dickie, Diane A. ^{[3
,7
]}

Rademeyer, Melanie ^{[4
]}

Turnbull, Mark M. ^{[1
]}

Xiao, Fan ^{[5
,6
]}

机构：

[1] Clark Univ, Carlson Sch Chem & Biochem, 950 Main St, Worcester, MA 01610 USA

[2] Clark Univ, Dept Phys, 950 Main St, Worcester, MA 01610 USA

[3] Brandeis Univ, Dept Chem, 415 South St, Waltham, MA 02453 USA

[4] Univ Pretoria, Dept Chem, Private Bag X20, ZA-0028 Hatfield, South Africa

[5] Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland

[6] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

[7] Univ Virginia, Dept Chem, 409 McCormick Rd, Charlottesville, VA 22904 USA

来源：

POLYHEDRON | 2019年 / 168卷

基金：

欧盟地平线“2020”;

关键词：

Cobalt(II); Zinc(II); Substituted anilines; Magnetic susceptibility; X-ray structure; TRANSITION-METAL SALTS; CRYSTAL-STRUCTURE; HEISENBERG-ANTIFERROMAGNET; EXCHANGE INTERACTIONS; ADDUCTS; FAMILY; HEAT; CL;

D O I：

10.1016/j.poly.2019.04.025

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A family of cobalt(II) and zinc(II) compounds with the general formula (4-subC(6)H(4)NH(2))(2)MX2, (M = Co, Zn; X = Cl, Br; sub = CH3, Cl) has been prepared and the compounds characterized by single-crystal X-ray diffraction. The eight compounds crystallize in the monoclinic space group I2/a and are isocoordinate, but show different crystal packing for the 4-methyl and 4-chloroaniline complexes as a result of halogen bonding in the 4-chloroaniline family. The cobalt complexes have also been studied via variable temperature magnetic susceptibility measurements. All four Co(II) compounds exhibit antiferromagnetic exchange (maxima in chi are observed) and have been fitted with a 1D-chain model (cobalt chloride complexes, J similar to -3 K) or a 2D-model (cobalt bromide complexes, J similar to -4 K). Analysis of potential superexchange pathways is provided. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：1 / 10

页数：10

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