合成了O,O'-(2-甲基-2,4-亚戊基)二硫代磷酸-N,N-二乙铵(PDP),用元素分析、红外光谱、核磁共振谱和X射线单晶衍射等技术手段对其结构进行了表征.PDP属四方晶系,I-4空间群,其晶胞参数为:a=2.1357(3) nm,b =2.1357(3) nm,c =0.71892(11) nm,oo =β=γ =90°,V=3.2791(8) nm3,Z =8,Dc=1.156 g/cm3,F(000)=1232,μ(MoKα)=0.412 mm-1,F(000)=1232,S=0.952,R=0.0664,wR=0.1791[I＞2σ(I)].PDP通过N—H…S和C—H…S氢键作用形成了一维超分子孔道结构.PDP在HCl溶液中对Q235钢的缓蚀性研究表明:PDP能有效抑制Q235钢的腐蚀,是阴极为主的混合型缓蚀剂,在Q235钢表面的吸附符合Langmuir吸附,属自发进行的物理化学吸附;在25℃的1.0 mol/L HCl溶液中PDP浓度为140 mg/L时的缓蚀率达到98.9％.CCDC:1404464.
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