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Structure, characterization and inhibition activity of new metal–organic framework

Structure, characterization and inhibition activity of new metal–organic framework,10.1016/j.corsci.2011.07.007,Corrosion Science,Safaa El-din H. Etai

Structure, characterization and inhibition activity of new metal–organic framework  
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Brown crystals of the MOF [(AgCN)4·(qox)2], 1 were obtained by the reaction of AgNO3, quinoxaline (qox) and KCN. The crystal structure of 1 consists of 1D-puckered AgCN chains which are connected by qox molecules forming 2D-fused deformed six-membered rings; [Ag6 (CN)4·(qox)2] creating wide voids capable to accommodate the qox molecules. 3D-network structure is created via H-bonds, π–π stacking and Ag–Ag interaction. The MOF 1 was tested as corrosion inhibitor for C-steel in 1M HCl solution using potentiodynamic polarization and electrochemical impedance techniques. Adsorption of the MOF 1 obeyed Langmuir adsorption isotherm. Activation parameters were calculated and discussed.
Journal: Corrosion Science - CORROS SCI , vol. 53, no. 11, pp. 3657-3665, 2011
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