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以叠氮和吡嗪酸为配体,通过溶剂热合成方法,合成了两例Mn(II)配位聚合物{[Mn(L)(N_3)]·CH_3OH}_n(1)和[Mn(L)(N_3)]_n(2),其中L为吡嗪酸。晶体结构表明,配合物1晶体结晶于正交晶系P2_12_12_1空间群,晶胞参数是a=0.86464(17)nm,b=1.0325(2)nm,c=1.0720(2)nm。配合物2晶体结晶于单斜晶系P2_1/c空间群,晶胞参数是a=1.1755(2)nm,b=0.97000(19)nm,c=0.65261(13)nm,β=100.23(3)°。配合物1是由叠氮和吡嗪酸根共同连接Mn(II)形成三维结构,而配合物2则是由叠氮和吡嗪酸根共同连接Mn(II)先形成二维结构,而后二维层之间过π-π堆积形成三维超分子结构。造成这种结构上的差别仅仅是由于使用的金属盐的阴离子不同。
Two kinds of Mn (II) coordination polymers {[Mn (L) (N_3)] · CH_3OH} _n (1) and [Mn L) (N_3)] _ n (2), where L is pyrazinic acid. The crystal structure shows that the crystal of complex 1 crystallizes in space group P2_12_12_1 of orthorhombic crystal. The unit cell parameters are a = 0.86464 (17) nm, b = 1.0325 (2) nm and c = 1.0720 (2) nm. The crystal structure of complex 2 was crystallized in the monoclinic P2_1 / c space group. The unit cell parameters were a = 1.1755 (2) nm, b = 0.97000 (19) nm, c = 0.65261 (13) nm and β = 100.23 (3) °. Complex 1 is composed of azido and pyrazinolate covalently linked to Mn (II) to form a three-dimensional structure, and complex 2 to azido and pyrazole co-linked Mn (II) to form a two-dimensional structure, Π-π stacking between the formation of three-dimensional supramolecular structure. The structural difference caused is only due to the difference in anions of the metal salts used.