Издательство СО РАН

Издательство СО РАН

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Поиск по журналу

Журнал структурной химии

2014 год, номер 4

STRUCTURE AND CHARACTERIZATION OF A 2D COBALT(II) COMPLEX [Co(L) 2] n (L = 3-NITRO-5-(pyridine-4-YL)BENZOATE)

D.-Y. Ma, H.-F. Guo, L. Qin
Zhaoqing University, Zhaoqing, P. R. China
mady@zqu.edu.cn
Ключевые слова: cobalt(II) coordination polymer, hydrothermal synthesis, crystal structure, thermal behavior
Страницы: 751-755
Подраздел: СУПРАМОЛЕКУЛЯРНЫЕ И НАНОРАЗМЕРНЫЕ СИСТЕМЫ

Аннотация

The self-assembly of unsymmetrical tecton 3-nitro-5-(pyridin-4-yl)benzoic acid (HL)with cobalt chloride under hydrothermal conditions affords a new 2D coordination polymer [Co(L) 2] n ( 1, L = 3-nitro-5-(pyridin-4-yl)benzoate), which is characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, powder X-ray diffraction analysis, and single crystal X-ray diffraction. Compound 1 is of the triclinic system, space group P-1 with a = 9.7857(12) Å, b = 10.3417(13) Å, c = 10.8463(13) Å, α = 85.155(2)°, β = 74.785(2)°, γ = 88.962(2)°, V = 1055.4(2) Å 3. The crystal structural analysis of complex 1 shows that the cobalt center is six-coordinated in an octahedral geometry by four O atoms from four different L ligands and two N atoms from two different L ligands; the Co(II) cations are bridged by μ 3- L into an interesting two-dimensional network structure. It should be pointed out that the thermal analysis results indicate that complex 1 is quite stable up to 420 °C.