Crystal structure and magnetic properties of hybrid materials self-assembled from the tetrakis(isothiocyanate)cobaltate(II) anion and trisubstituted benzyltriphenylphosphinium |
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| Authors: | S -L Dai Z -P Cheng R -K Huang Q -Y Guan Y -J Liang W -Q Huang J -R Zhou C -L Ni |
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| Institution: | 1. Department of Applied Chemistry, College of Science, Institute of Biomaterials, South China Agricultural University, Guangzhou, P. R. China
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| Abstract: | A new hybrid material BiF4BrBzTPP]2Co(NCS)4] (1) (BiF4BrBzTPP+ = 2,6-bisfluoro-4-bromobenzyl-triphenylphosphinium, NCS? = isothiocyanate) is synthesized and characterized by elemental analyses, IR, UV spectra, ESI-MS, molar conductivity, single crystal X-ray diffraction and magnetic susceptibility measurements. Compound 1 crystallizes in the monoclinic space group C2/c with a = 15.272(2) Å, b = 24.779(3) Å, c = 14.482(2) Å, β = 101.037(2)°, V = 5378.9(12) Å3, Z = 4. The compound comprises two cations and one anion which exhibits a distorted tetrahedral coordination geometry. The short F...F, C...Br, and N...Br interactions and C-H...S hydrogen bonds consolidate the stacking of the molecules. Magnetic susceptibility measurements in the temperature range 2–300 K show that 1 exhibits weak antiferromagnetic coupling behavior. |
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