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合成并用元素分析和单晶X射线衍射表征了一个新的化合物 [C(NH2 ) 3]2 { [MoO(H2 O)C2 O4 ]2 ( μ O) 2 }·2H2 O ,测定结果表明该化合物中存在金属Mo—Mo键 ,通过计算知道钼原子是 +5价的 ,两个钼氧八面体是共边连接的 ,每个钼上有一个螯合的草酸根 ,而胍作为阳离子存在于晶体中 ,参与构筑有特色的氢键网络。该化合物属单斜晶系 ,空间群P2 1 c ,a =0 795 6( 2 )nm ,b =1 8996( 4 )nm ,c=1 2 832 ( 3)nm ,β =10 6 78( 3)°,V =1 85 68( 7)nm3,R1=0 0 2 4 3,ωR2 =0 0 672。
A new compound [C (NH2) 3] 2 {[MoO (H2 O) C2 O4] 2 (μ O) 2} · 2H2O was synthesized and characterized by elemental analysis and single crystal X-ray diffraction. There is a metal Mo-Mo bond, which is calculated to know that the molybdenum atom is a +5 valence, the two molybdenum oxygen octahedra are co-connected, with a chelated oxalate on each molybdenum, and the guanidine present as a cation in the crystal In, participate in the construction of a unique hydrogen bond network. The compound belongs to the monoclinic system with space group P2 1 c, a = 0 795 6 (2) nm, b = 1 8996 (4) nm, c = ) °, V = 1 85 68 (7) nm3, R1 = 0 0 2 4 3, ωR2 = 0 0 672.