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      https://www.ias.ac.in/article/fulltext/jcsc/129/04/0441-0448

    • Keywords

       

      Ruthenium nitrosyl complexes; pyridine; X-ray crystallography-thermal analysis; photoinduced linkage isomer; ruthenium phosphide; DSC.

    • Abstract

       

      The reaction of trans-[Ru(NO)Py₂Cl₂ (OH)] with concentrated o-phosphoric acid, after washing the mixture with diethyl ether, gave trans-[Ru(NO)Py₂Cl₂(H₂O)]H₂PO₄•2H₃PO₄•H₂O (I) in nearly quantitative yield. The structure of this compound was determined by X-ray diffraction analysis: space group P-1. Washing of I with ethanol afforded the dihydrophosphate salt trans-[Ru(NO)Py₂Cl₂ (H₂O)]H₂PO₄•H₂O (II) (yield 97%). The thermal decomposition of I and II in a helium atmosphere resulted in the formation of ruthenium phosphide RuP as a predominant component along with Ru₂P or RuP₂. Preliminary photoisomerization experiments for trans-[Ru(NO)Py₂Cl₂ (OH)] and trans-[Ru(NO)Py₂Cl₂ (H₂O)]H₂PO₄•H₂O suggested the presenceof metastable states. DSC experiments have been carried out for both compounds. The measured kinetic parameters for the metastable decay for trans-[Ru(NO)Py₂Cl₂ (H₂O)]H₂PO₄•H₂Owere Ea = 90.7± 2.4 kJ/mol, log10(k0/sec−1) = 18.9±0.6, and Td = 217 K.

    • Author Affiliations

       

      ALEXANDER N MAKHINYA1 2 ILYA V KOROLKOV1 2 MAXIM A IL’IN1 2 IRAIDA A BAIDINA1 PAVEL E PLUSNIN1 2 EUGENI A MAXIMOVSKI1 2 ELIZAVETA A BELETSKAYA1 2 NINA I ALFEROVA1

      1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3 Akad. Lavrentiev Ave., Novosibirsk 630090, Russia
      2. Novosibirsk State University, 1 Pirogova Str., Novosibirsk 630090, Russia
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