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本文合成了间亚苯基桥接的席夫碱型双-(苯并15-冠-5)苦味酸铷配合物以及测定了其晶体结构。实验证明该晶体属单斜晶系,P2_1/n空间群,晶胞参数:a=19.3049(49)(?),b=20.4544(39)(?),c=25.4375(75)(?),β=107.925(21)°,V=9556.90(?)~3,F(000)=4175.41(e),Dc=1.455g/cm~3。对8172个可观测反射精修所有的结构参数,最后偏离因子R=0.0781。此双冠醚以反-反式构型与Rb~+离子形成4:2(冠醚单元:阳离子)分子间夹心结构配合物,Rb_1和Rb_2分别与两个双冠醚分子中不同取向的醚环的十个氧原子配位。Rb-O平均键长为2.986和2.998(?),并与席夫碱型双冠醚苦味酸钾配合物进行比较。
In this paper, m-phenylene-bridged Schiff base type bis (benzo 15-crown-5) rubidium complex and its crystal structure were determined. The results show that the crystal belongs to the monoclinic space group P2_1 / n with unit cell parameters of a = 19.3049 (49) (?), B = 20.4544 (39) and c = 25.4375 (75) β = 107.925 (21) °, V = 9556.90 (?) ~ 3, F (000) = 4175.41 (e) and Dc = 1.455 g / cm ~ 3. All structural parameters were refined for 8172 observable reflections, with a final deviation factor of R = 0.0781. The bis (crown ether) (Cation) intermolecular sandwich complex was formed in the trans-trans configuration with Rb ~ + ions. Rb_1 and Rb_2 were different from the ethers with different orientations The ring’s ten oxygen atoms coordinate. The average bond lengths of Rb-O were 2.986 and 2.998 (?), Respectively, and were compared with Schiff’s base double-crown-capric potassium compound.