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制备了2个含有叠氮根和硫氰根配位单元的3,4-双咪唑噻吩(L)的锰(Ⅱ)配位聚合物[Mn(L)(N3)2(H2O)]n(1)和[Mn(L)2(SCN3)2]n(2)并报道了它们的晶体结构。化合物1和2是通过3,4-双咪唑噻吩与四水醋酸锰反应,同时分别引入过量的线性三原子阴离子(N3-和SCN-)以取代醋酸根作为抗衡离子制备而得。单晶结构分析表明1和2具有相同的无限二维链状空间结构,但是由不同的44元的[Mn6(L)4(2N3)2]和36元的[Mn4L4]大环单元结构组成。此外,配位聚合物1中的叠氮根分别采用端基单齿和桥联双齿的配位方式,而配位聚合物2中的硫氰根仅以端基氮原子与Mn(Ⅱ)离子配位。
Two Mn (Ⅱ) coordination polymers [Mn (L) (N 3) 2 (H 2 O)] n (3,4-diimidazolylthiophene) containing azide and thiocyanate coordination sites were prepared. 1) and [Mn (L) 2 (SCN3) 2] n (2) and reported their crystal structure. Compounds 1 and 2 were prepared by reaction of 3,4-bisimidazolyl thiophene with manganese acetate tetrahydrate and introduction of excess linear triatomic anions (N3- and SCN-) instead of acetate as counterion. Single crystal structure analysis shows that 1 and 2 have the same infinite two-dimensional chain-like spatial structure but consist of different 44-membered [Mn6 (L) 4 (2N3) 2] and 36-membered [Mn4L4] macrocycle structures. In addition, the azide groups in coordination polymer 1 adopt the coordination mode of terminal monodentate and bridged bidentate, respectively, while the thiocyanate in coordination polymer 2 only has terminal nitrogen atom and Mn (II) Ion coordination.