| 杂-双核配合物[CaCu(C3H2O4)2(H2O)4]n的合成、晶体结构及热稳定性(英文) |
| Synthesis， Crystal Structure and Thermal Stability of a Novel Hetero-bimetallic Complex: Bis(malonato)tetra-(aqua)calcum(Ⅱ)copper(Ⅱ) |
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| 关键词: 钙 铜 丙二酸 晶体结构 热稳定性 |
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| Abstract: The title complex， [CaCu(C3H2O4)2(H2O)4]n， with a formula of C6H12CaCuO12 and Mr=379.78 has been sy-nthesized and characterized by single crystal X-ray diffraction structure analysis， elemental analysis， IR spectra and TG-DTG techniques. The results show that the crystal is Orthorhombic， space group Pbcn with a=0.669 21(5) nm， b=1.370 23(5) nm， c=1.322 39(10) nm， V=1.212 59(16) nm3， Dc=2.080 g·cm-3， μ=2.288 mm-1， F(000)=772 and Z=4. The final R=0.054 0 and wR=0.112 8 for 1 189 observed reflections with I>2σ(I). The structure of the title complex consists of CaO8 polyhedra and CuO6 elongated octahedra linked together by malonate ligands. The Ca(Ⅱ) cation， on a twofold axis， is coordinated by two water molecules and six malonate O atoms. The Cu(Ⅱ) cation， which lies in a centre of symmetry in an octahedral arrangement， is coordinated by four malonate O atoms and two water molecules. The structure comprises alternating layers along the [101] plane， with the shortest Cu…Cu distance of 0.762 46(6) nm. The whole 3D structure is maintained and stabilized by the presence of hydrogen bonds. Its thermo gravimetric analysis was determined by TG-DTG techniques. CCDC: 663184. |
| Keywords: calcium copper malonate crystal structure thermal stability |
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| 傅绪成,王成刚,李明田,王小艳.杂-双核配合物[CaCu(C3H2O4)2(H2O)4]n的合成、晶体结构及热稳定性(英文)[J].无机化学学报,2007,23(10):1784-1788. |
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