论文部分内容阅读
以溴化铜和溴化苄基三苯基鏻盐为原料,在含有氢溴酸的甲醇溶液中合成了1种含四溴合铜配阴离子的苄基三苯基季鏻盐[BnTPP]_2[CuBr_4]·2H_2O([BnTPP]~+为苄基三苯基鏻鎓离子),通过元素分析、红外光谱、紫外-可见光谱、电子喷雾质谱和X-射线单晶衍射对其进行了组成分析和结构表征.结果表明:合成的季鏻盐[BnTPP]_2[CuBr_4]·2H_2O属于单斜晶系,空间群P2(1),晶胞参数为:a=0.871 6(1)nm,b=1.641 5(2)nm,c=1.646 8(2)nm,β=96.156(3)°,V=2.342 5(4)nm~3,Z=2,Dc=1.596 g/cm3,GOOF=1.032,R1=0.046 8,wR2=0.096 4.季鏻盐由1个[CuBr_4]~(2-)阴离子、2个[BnTPP]~+阳离子和2个水分子组成,相邻阳离子通过苯环之间的π…π堆积作用形成了二聚体;晶体中的C—H…Br、O—H…Br和C—H…O氢键使整个分子形成了网状结构.抗菌活性表明,[BnTPP]_2[CuBr_4]比[BnTPP]~+Br~-对大肠杆菌和金葡萄球菌具有更好的抗菌活性.
A kind of benzyltriphenylphosphonium quaternary phosphonium salt [BnTPP] _2 with copper (IV) bromide and anions was synthesized by using copper bromide and benzyltriphenylphosphonium bromide as raw materials in a solution of hydrobromic acid in methanol [CuBr_4] .2H_2O ([BnTPP] ~ + is benzyltriphenylphosphonium ions), which were analyzed by elemental analysis, infrared spectrum, UV-visible spectrum, electron spray mass spectrum and X-ray single crystal diffraction (BnTPP) _2 [CuBr_4] · 2H_2O belongs to the monoclinic space group P2 (1) with unit cell parameters of a = 0.871 6 (1) nm and b = 1.641 5 (2) nm, c = 1.646 8 (2) nm, β = 96.156 (3) °, V = 2.342 5 (4) nm ~ 3, Z = 2, Dc = 1.596 g / cm3, GOOF = 1.032, R1 = 0.046 8, wR2 = 0.096 4. The quaternary phosphonium salt consists of one [CuBr_4] ~ (2-) anion, two [BnTPP] ~ + cations and two water molecules with adjacent cations passing through the π ... π stacking effect of the formation of a dimer; C-H ... Br, O-H ... Br and C-H ... O hydrogen bonds in the crystal form a network structure of the entire molecule antibacterial activity showed that [BnTPP] _2 [CuBr_4] has better antibacterial activity against Escherichia coli and Staphylococcus aureus than [BnTPP] ~ + Br ~.