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钼簇合物Mo_3(μ_3—S)(μ—S)_2[μ—SOP(OEt)_2][S_2P(OEt)_2]_3(O)_2和CuCl_2·2H_2O进行氧化还原反应,其产物组成为Cu_8Cl_2[S_2P(OEt)_2]_6。该晶体属三斜晶系,空间群为P(?)。晶胞参数a=11.578(5),b=12.663(3),c=14.317(4);α=55.54(2),β=57.35(3),r=72.23(3)(°);Z=1;D_(calc.)=1.926g·cm~(-3)。对3573个Ⅰ≥3σ(Ⅰ)的独立衍射的偏离因子R=0.075。研究表明,晶体是由以Cu_8Cl_2[S_2P(OEt)_2]_6为结构单元的链式分子所构成。其中,8个Cu原子组成一个立方体笼腔,每个Cu(+1)配位氛围为四配位四面体构型,Cu—Cu间距为3.018—3.437,未形成金属一金属键。这种Cu(+2)夺取Mo簇合物配基的现象,值得进一步研究。
The redox reaction of molybdenum cluster Mo_3 (μ_3-S) (μ-S) _2 [μ-SOP (OEt) _2] [S_2P (OEt) _2] _3 (O) _2 and CuCl_2 · 2H_2O has the composition of Cu_8Cl_2 [S_2P (OEt) _2] _6. The crystal is triclinic with space group P (?). The cell parameters a = 11.578 (5), b = 12.663 (3), c = 14.317 (4); α = 55.54 (2), β = 57.35 (3), r = 72.23 (3) 1; D calc. = 1.926 g · cm -3. The deviation from the independent diffraction of 3573 Ⅰ ≧ 3σ (Ⅰ) is R = 0.075. The results show that the crystal consists of chain molecules with Cu_8Cl_2 [S_2P (OEt) _2] _6 as the structural unit. Among them, eight Cu atoms form a cubic cage cavity, and each Cu (+1) coordination atmosphere has a tetrahedral tetrahedral configuration with a Cu-Cu spacing of 3.018-3.437, and no metal-metal bond is formed. This Cu (+2) to capture Mo cluster ligand phenomenon, worthy of further study.