新型超分子化合物[Co(L-alanato)_2(phen)]NO_3·4H_2O的水热合成及其晶体结构

Hydrothermal Synthesis of Novel Supramolecular Complex [Co(L-alanato)_2(phen)]NO_3·4H_2O and Its Crystal Structure

以Co(NO3)2.6H2O,邻菲啰啉(phen)与L-丙氨酸(L-alanine)为原料,通过水热法合成了新型超分子化合物[Co(L-alanato)2(phen)]NO3.4H2O(1),其结构经IR,元素分析和X-射线单晶衍射分析表征。1属三斜晶系,空间群P-1,晶胞参数a=10.121 9(5),b=11.461 1(12),c=12.573 2(12),α=71.13(3)°,β=67.52(3)°,γ=66.08(3)°,V=1 207.24(18)3,Dc=1.511 g.cm-3,Z=2,F(000)=572,Mr=549.38,μ=0.777 mm-1,R1=0.083 6,ωR2=0.214 2。1的中心原子Co(Ⅲ)形成六配位的变形八面体结构,并通过氢键形成三维结构。热分析研究表明,1在加热过程中先后失去结晶水和邻菲啰啉。

A novel supramolecular complex, [ Co（L-alanato）2 （phen） ] NO3 · 4H2O（ 1 ）, was synthesized by the hydrothermal reaction of Co（ NO3 ）2 · 6H2O with L-alanine and 1,10-phenanthroline （phen）. The structure was characterized by IR, elemental analysis and single crystal X-ray diffraction analysis. 1 belongs to triclinic system, space group P-1 with a = 10. 121 9 （5）A, b = 11. 461 1 （12） A, c = 12.573 2（12） A, α =71.13（3）°, β=67.52（3）°, γ =66.08（3）°, V= 1207.24 （18）A3, Dc=1.511 g · cm-3, Z=2, F（000） =572, Mr=549.38, μ=0.777 mm-1, R1 = 0.083 6, wR2 = 0.214 2. 1 exhibited a metabolic octahedral structure by a six-coordinated of central atom Co（Ⅲ ） with one phen and two alanine ligands. Intermolecular hydrogen bond of 1 constituted three-dimensional structure. The results from thermal analysis showed that 1 in turn lost crystal water and 1,10-phenanthroline during heating.