Volume 25, Issue 5 pp. 623-629
Full Paper

Direct Synthesis, Crystal Structure and Thermal Kinetics of Supramolecular Complex [Co(H2O)6]·(Hnip)2·(H2nip)2·(DMA)2·(H2O)8 (nip=5-nitroisophthalate, DMA=CH3NHCH3)

Li-Qiong Wang

Li-Qiong Wang

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Jin-Yu Guo

Jin-Yu Guo

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Tong-Lai Zhang

Tong-Lai Zhang

Tel./Fax: 0086-010-68913818

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Jian-Guo Zhang

Jian-Guo Zhang

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Li Yang

Li Yang

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Xiao-Jing Qiao

Xiao-Jing Qiao

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Rui-Feng Wu

Rui-Feng Wu

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Wei Yu

Wei Yu

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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First published: 11 May 2007
Citations: 2

Abstract

The crystal of [Co(H2O)6]·(Hnip)2·(H2nip)2·(DMA)2·(H2O)8 has been cultured using direct method and characterized by X-ray single crystal diffractometry, elemental analysis and FTIR spectroscopy. It crystallizes in triclinic system, P-1 space group with the cell parameters of a=0.7012(1) nm, b=1.1378(2) nm, c=1.6612(3) nm, α=84.92(3)°, β=85.19(3)°, γ=85.91(3)°, V=1.3128(5) nm3, Z=1, Dc1.573 g·cm−3. Final R indices [I>(I)] are:R1=0.0279, wR2=0.0765 while R indices for all data are:R1=0.0327, wR2=0.0806. The Co coordination octahedra are each surrounded by two Hnip, two H2nip, two DMA and eight water molecules that are linked by hydrogen bonds and π-π stacking interactions. Thermal analyses of DSC and TG-DTG have been performed on the complex to predict its thermal decomposition mechanism and determine the most probable kinetic model function using Kissinger, Ozawa, integral and differential methods.

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