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Citation: XIE Bin, LAI Chuan, XIANG Yangguang, ZOU Like, XIANG Zhen, HUANG Chun, YI Bin. Crystal Structure, Thermal Stability and Corrosion Inhibition of N, N-Diethylammonium O, O'-Di(4-methylphenyl)dithiophosphate[J]. Chinese Journal of Applied Chemistry, ;2012, 29(2): 200-208. doi: 10.3724/SP.J.1095.2012.00082 shu

Crystal Structure, Thermal Stability and Corrosion Inhibition of N, N-Diethylammonium O, O'-Di(4-methylphenyl)dithiophosphate

XIE Bin ^a,, ,
LAI Chuan ^a ,
XIANG Yangguang ^a ,
ZOU Like ^a ,
XIANG Zhen ^a ,
HUANG Chun ^a ,
YI Bin ^b

1.
a Institute of Functional Materials, Sichuan University of Science & Engineering, Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Zigong 643000, China;
2.
b Luzhou Pinchuang Technology Co. Ltd., Luzhou 643000, China

Corresponding author: XIE Bin,
Received Date: 2 March 2011
Available Online: 23 May 2011
Fund Project: 四川省教育厅项目(09ZA057) (09ZA057)腐蚀与防护四川省高校重点实验室项目(2008CL03) (2008CL03)四川省科技厅科技支撑计划项目(2010GZ0130) (2010GZ0130)泸州老窖科研奖学金项目(09ljzk10)资助 (09ljzk10)

[Et₂NH₂][(4-MeC₆H₄O)₂PS₂](N,N-diethylammonium O,O'-di(4-methylphenyl)dithiophosphate,NOP) was synthesized and characterized by elemental analysis,IR,TG-DSC,and single crystal X-ray diffraction analysis.The thermal stability and corrosion inhibition were investigated.The crystallographic structure analysis reveals that the title compound crystallizes in monoclinic system,P 2₁/n space group,a=1.4241(3) nm,b=2.0087(4) nm,c=1.4366(3) nm,V=3.9599(15) nm³,D_c=1.286 Mg/m³,Z=8,F(000)=1632,μ(MoKα)=0.360 mm^-1,S=1.001,(Δ/σ)_max=0.001,and R₁=0.0776,wR₂=0.1749(I>2σ(I)).There are two independent subunits in the asymmetric structure unit of NOP,and infinite one-dimensional chain structure is formed via N-H…S hydrogen bonds between the subunits.The corrosion inhibition study showed that the NOP could effectively restrain corrosion of Q235 steel in H₂SO₄ solution.It was shown that the adsorption of NOP on the Q235 steel surface is consistent with the Langmuir adsorption isotherm,and the corrosion inhibition depends on both physical and chemical sorptions.CCDC:813309
- O,O'-dialkyldithiophosphate,
- crystal structure,
- thermal stability,
- corrosion inhibitor,
- adsorption
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