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Direct Synthesis, Crystal Structure and Thermal Kinetics of Supramolecular Complex [Co(H 2 O) 6 ]·(Hnip) 2 ·(H 2 nip) 2 ·(DMA) 2 ·(H 2 O) 8 (nip=5‐nitroisophthalate, DMA=CH 3 NHCH 3 )
Author(s) -
Wang LiQiong,
Guo JinYu,
Zhang TongLai,
Zhang JianGuo,
Yang Li,
Qiao XiaoJing,
Wu RuiFeng,
Yu Wei
Publication year - 2007
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200790116
Subject(s) - triclinic crystal system , chemistry , crystallography , crystal structure , hydrogen bond , thermal decomposition , infrared spectroscopy , molecule , stacking , single crystal , supramolecular chemistry , octahedron , analytical chemistry (journal) , organic chemistry , chromatography
The crystal of [Co(H 2 O) 6 ]·(Hnip) 2 ·(H 2 nip) 2 ·(DMA) 2 ·(H 2 O) 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) nm 3 , Z =1, D c 1.573 g·cm −3 . Final R indices [ I > 2σ ( I )] are: R 1 =0.0279, wR 2 =0.0765 while R indices for all data are: R 1 =0.0327, wR 2 =0.0806. The Co coordination octahedra are each surrounded by two Hnip, two H 2 nip, 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.