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

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 

出　　处：《Chinese Science Bulletin》2001年第12期987-991,共5页

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 29831010) ;and the Foundation of the State Key Laboratory of Coordination Chemistry of Nanjing University.

摘　　要：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.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, withspace group p-1 , a = 1.05128(13), b = 1.7559(5), c = 1.94479(3) nm, a = 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 α-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. 

分 类 号：O641[理学—物理化学]