Rhenium,part XIV. Studies on the action of hydrogen halides on [ReO2en2]+ |
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| Authors: | Mukul C Chakravorti Chandra K Das |
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| Institution: | (1) Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal, India;(2) Present address: Department of Chemistry, Jalpaiguri Government Engineering College, Jalpaiguri, West Bengal, India |
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| Abstract: | Summary The products from the reaction oftrans-dioxobis(ethylenediamine)rhenium(V) halides with hydrogen halides have been investigated. Dilute (2M) and concentrated hydrochloric acid react with (ReO2en2)Cl in the cold to give ReO(OH)enCl2 and IRe(OH)2enCl2]Cl respectively, while with hot 6M HCl ReOCl5]2– is formed. Dilute solutions of HX protonate ReO2en2]X (X = Br and I) giving ReO(OH)en2]X2 which are converted slowly into ReO(OH)enBr2 and ReO(OH)en2](I3)2. Hot and concentrated solutions of HX reduce Rev in (ReO2en2 )X (X = Br and I) giving enH2(ReBr6) and ReI4en. The thermal decomposition of (ReO2en2)X (X = Cl, Br and I) has been studied by thermogravimetry and a polymeric compound, Re2O7en2, has been isolated by heating (ReO2en2)X at 200°. The compounds have been characterised by molecular conductivities, magnetic susceptibility and i.r. spectra. |
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