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Syntheses,characterization,crystal structure and magnetic properties of copper(Ⅱ) α,β-unsaturated carboxylate complexes with trimethyl phosphate

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Chinese Science Bulletin 2001年第12期46卷 987-991页

作者： wang yaoyu, liu ping, shi qian, gao yici & shi qizhen1. department of chemistry, northwest university, xi’an 710069, china 2. department of chemistry, Wenzhou Teachers College, Wenzhou 325003, china 3. department of chemistry, Lanzhou university, Lanzhou 730000, china department of chemistry Northwest University Xi’an China department of chemistry Wenzhou Teachers College Wenzhou China department of chemistry Lanzhou University Lanzhou China

Two ternary complexes Cu2A4[OP(OCH3)3]2 (A represents CH2=CH-COO- and CH2=C(CH3)-COO-) have been synthesized, and elemental analyses, IR, ESR, electronic reflectance spectra and magnetic studies were carried out. The single crystal X-ray diffraction shows that Cu2[CH2=C(CH3)-COO]4[OP(OCH3)3]2 is triclinic, with space group P1, a = 1.05128(13), b = 1.7559(5), c = 1.94479(3) nm, α =91.263(14)°,(β = 102.559(6)°,γ= 106.339(13)°, Z = 4 and R = 0.0668. Two copper(Ⅱ) atoms are bridged by four (a-methacrylate groups, and each copper(Ⅱ) atom is coordinated with a trimethyl phosphate molecule in the axial position, forming a distorted square pyramidal configuration. The symmetric center is between the two copper(Ⅱ) atoms, and the Cu-Cu bond distance is 0.26098(6) nm. The Cu-Cu distance and magnetic studies suggest that there exist anti-ferromagnetic interactions between the two copper(Ⅱ) atoms.

关键词： copper(Ⅱ ) complex α β-unsaturated carboxylate trimethyl phosphate magnetic property crystal structure.

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Synthesis,thermal decomposition and crystal structure of copper(Ⅱ)α,β-unsaturated carboxylate with urea

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Chinese Science Bulletin 1999年第7期44卷 602-605页

作者： wang yaoyu, shi qian, shi qizhen, gao yici and ZHOU Zhongyuan department of chemistry, northwest university, xi’ an 710069, china department of chemistry, Lanzhou university , Lanzhou 730000, china Chengdu Institute of Organic chemistry , Chinese Academy of Sciences , Chengdu 610041, china

A detailed synthesis is described for binuclear cage ternary complexes Cu2A4 [（NH2）2CO]2, where A = CH2 =CH—COO- and CH2 =C（CH3）—COO-. Elemental analysis and thermal analysis have been investigated. The molecular structure of Cu2 （CH2 = CH—COO）4[（NH2）2CO]2 was determined by single crystal X-ray diffraction. The material forms blue crystal with tetragronal symmetry, space group P42/n, a = b = 1. 239 35（6） nm, c = 1. 398 05 （16） nm, Z = 4. There exists, a magnetic exchange interaction between the two paramagnetic Cu atoms. The Cu—Cu bond length is 0.260 94 nm.

关键词： copper(Ⅱ) α β-unsaturated carboxylate urea ternary complex thermal decomposition crystal structure.

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