Synthesis and magneto-structural correlation of a new maleato bridged copper(II) coordination polymer期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Synthesis and magneto-structural correlation of a new maleato bridged copper(II) coordination polymer

Authors:	Shyamapada Shit Joy Chakraborty Anamika Das Glenn P. A. Yap M. S. El. Fallah Samiran Mitra

Affiliation:	(1) Department of Chemistry, Jadavpur University, Kolkata, 700 032, West Bengal, India;(2) 201 Brown Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA;(3) Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès, 1-11 E-08028, Barcelona, Spain

Abstract:	A one-dimensional (1-D) copper(II) coordination polymer [Cu(maleate)(2,2′-bipyridyl)]_n·2H₂O has been synthesised. Single crystal X-ray diffraction study reveals that maleate ion bridges two adjacent copper(II) centres along the chain in a syn–anti fashion. A complete cryomagnetic investigation of the title complex correlates well with the distorted square pyramidal geometry of the central copper(II) ion and bridging nature of the maleate. A τ value of 0.26 indicates the distortion towards tbp coordination allowing the ${rm d}_{x^2 - y^2 }$ magnetic orbital to acquire some ${rm d}_{z^2 }$ character leading to a weak antiferromagnetic interaction having J = −0.26 cm⁻¹. The complex has also been firmly established from several other instrumental techniques like Fourier transform infrared (FT-IR) and EPR spectroscopies.

Keywords:	Cu(II) Maleate Syn– anti bridging X-ray structure Cryomagnetic studies
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