Citation: HUANG Yan-Ju, YAN Yong-Sheng, ZHANG Hong-Yan. Hydrothermal Reaction, Structure and Magnetic Properties of a Binuclear Cobalt Complex with N-donor Ligand: 2-Methyldipyrido[3,2-f:2',3'-h]quinoxaline[J]. Chinese Journal of Structural Chemistry, ;2014, 33(11): 1580-1586. doi: 10.14102/j.cnki.0254-5861.2011-0310 shu

Hydrothermal Reaction, Structure and Magnetic Properties of a Binuclear Cobalt Complex with N-donor Ligand: 2-Methyldipyrido[3,2-f:2',3'-h]quinoxaline

a.
a. Department of Chemistry, Tonghua Normal University, Tonghua 134002, China;
b.
b. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China

Corresponding author: HUANG Yan-Ju,
Received Date: 31 March 2014
Available Online: 18 August 2014
Fund Project: This project was supported by Tonghua Normal University field project (No. 201402) (No. 201402)

One complex [Co_1.5(C₆H₅CHCHCOO)₃(Medpq)]·H₂O (C₆H₅CHCHCOO=cinnamic acid, Medpq=2-methyldipyrido[3,2-f:2',3'-h]quinoxaline) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG, single-crystal X-ray diffraction and magnetic susceptibility measurements. Complex 1 crystallizes in the triclinic system, space group P1, with a=10.224(5), b=14.572(5), c=15.139(5)Å, α=112.704(5), β=97.168(5), γ=109.749(5), V=1871.8(13)Å³ and Z=2 (at 293(2) K). In the crystal structure, the Co(1) ion is hexa-coordinated with six atoms from three different cinnamic acid ligands and the symmetric three different cinnamic acid ligands; the Co(2) center adopts a coordination environment with two nitrogen atoms from Medpq ligand and four oxygen atoms from two different cinnamic ligands, assuming a slightly distorted octahedral geometry, respectively. The negative value of the Weiss constant indicates antiferromagnetic exchange interactions between the Co ions.
- cobalt complex,
- magnetic susceptibility measurement,
- 2-methyldipyrido[3,2-f:2',3'-h]quinoxaline
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