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合成了双核铅配合物{Pb2[S2P(OC6H4Me-p)2]2[μ-S2P(OC6H4Me-p)2]2},并用元素分析、红外光谱、紫外-可见光谱、热重分析和X射线衍射对其进行了结构表征.结果表明,该晶体属于三斜晶系,P1空间群,晶胞参数a=1.06393(6)nm,b=1.15005(6)nm,c=1.45006(5)nm,α=94.109(3)°,β=98.833(4)°,γ=109.242(5)°,V=1.64099(14)nm3,Dc=1.671 Mg.m-3,Z=1,F(000)=808,μ(Mo Kα)=5.523mm!1,S=1.024,R1=0.0596,wR2=0.1464[I〉2σ(I)].该配合物形成了具有椅式构型的八元环[Pb2S4P2],每个Pb原子与1个螯合双齿配体(p-MeC6H4O)2PS-2的2个S原子和2个桥三齿配体μ-(p-MeC6H4O)2PS-2的3个S原子配位,Pb1—S的键长在0.2750～0.3257 nm范围内.芳环对Pb原子有弱的π配位作用[Pb1…Cig为0.3365(2)nm].Pb原子处于Pb(S5ArE)(E代表孤对电子)的畸变缺位五角双锥(Ψ-PB)环境中,1个S原子和1个芳环位于Ψ-PB的轴向位置[键角S1—Pb1—Cig为173.79(5)°],4个S原子和Pb原子的一对立体化学活性的孤对电子占据Ψ-PB的赤道位置.配合物热稳定性高,在287.1℃开始分解.与原料(p-MeC6H4O)2PS2NH2Et2比较,配合物对葡萄球菌(Staphylococcus)、大肠杆菌(E.Coli)和枯草杆菌(B.Subtilis)具有更好的抑菌活性.
(Pb2 [S2P (OC6H4Me-p) 2] 2 [μ-S2P (OC6H4Me-p) 2] 2} was synthesized and characterized by elemental analysis, IR, UV- The results show that the crystal belongs to the triclinic system with P1 space group, the unit cell parameters a = 1.06393 (6) nm, b = 1.15005 (6) nm and c = 1.45006 (5) nm, α = 94.109 (3) °, β = 98.833 (4) °, γ = 109.242 (5) °, V = 1.64099 (14) nm3, Dc = 1.671 Mg.m-3, Z = 1, F 808, μ (Mo Kα) = 5.523 mm1, S = 1.024, R1 = 0.0596, wR2 = 0.1464 [I> 2σ (I)]. The complex formed an eight-membered ring [Pb2S4P2] , Two S atoms per Pb atom and one chelating bidentate ligand (p-MeC6H4O) 2PS-2 and three S atoms of two bridged tridentate ligand μ- (p-MeC6H4O) 2PS-2 The bond length of Pb1-S is in the range of 0.2750 ~ 0.3257 nm. The aromatic ring has a weak π-coordinate effect on Pb atoms [Pb1 ... Cig is 0.3365 (2) nm] Represents a lone pair of electrons), one S atom and one aromatic ring are located in the axial position of ψ-PB [bond angle S1-Pb1-Cig is 173.79 (5) °], a pair of stereochemically active lone pairs of electrons occupying four S atoms and Pb atoms Ψ-PB.The thermal stability of the complex began to decompose at 287.1 ° C.Compared with the raw material (p-MeC6H4O) 2PS2NH2Et2, the complex was stable against Staphylococcus, E.coli and B. subtilis B. Subtilis) has better antibacterial activity.