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Syntheses, Structures, and Magnetic Properties of Two DMTCNQ and DETCNQ Gadolinium Complexes
Author(s) -
Zhang JuWen,
Liu WenHua,
Li GuangMing,
Yan PengFei,
Liu BinQiu
Publication year - 2019
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900059
Subject(s) - supramolecular chemistry , chemistry , crystallography , ligand (biochemistry) , gadolinium , antiferromagnetism , intermolecular force , molecule , hydrogen bond , radical , atom (system on chip) , magnetic susceptibility , crystal structure , physics , organic chemistry , biochemistry , receptor , computer science , embedded system , condensed matter physics
Two DMTCNQ (DMTCNQ = 2,5‐dimethyl‐7,7,8,8‐tetracyano‐ p ‐quinodimethane) and DETCNQ (DETCNQ = 2,5‐diethyl‐7,7,8,8‐tetracyano‐ p ‐quinodimethane) gadolinium complexes [Gd(DMTCNQ) 2 (CH 3 OH)(H 2 O) 6 ][DMTCNQ] · 4H 2 O ( 1 ) and [Gd(DETCNQ)(H 2 O) 7 ][2DETCNQ] ( 2 ) were synthesized by reactions of GdCl 3 · 6H 2 O with Li(DMTCNQ) or Li(DETCNQ). X‐ray diffraction analysis reveals that complexes 1 and 2 are discrete complexes. The central metal atom in 1 is coordinated by two DMTCNQ ligand radicals whereas that in 2 is coordinated by just one DETCNQ ligand radical. The adjacent molecules are connected by the intermolecular hydrogen bonds to form the two‐dimensional (2D) supramolecular layer structures, which are further packed into a three‐dimensional (3D) supramolecular architecture through the π–π interactions between ligand radicals in 1 and 2 . Magnetic investigation indicates that the antiferromagnetic interactions between spin carriers exists in 1 and 2 .