Synthesis, thermal properties and photoisomerization of trans-[Ru(NO)Py2Cl2(H2O)]H2PO4⋅H2O

Alexander N. Makhinya, Ilya V. Korolkov, Maxim A. Il’In, Iraida A. Baidina, Pavel E. Plusnin, Eugeni A. Maximovski, Elizaveta A. Beletskaya, Nina I. Alferova

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2 Citations (Scopus)

Abstract

The reaction of trans-[Ru(NO)Py 2Cl 2(OH)] with concentrated o-phosphoric acid, after washing the mixture with diethyl ether, gave trans-[Ru(NO)Py 2Cl 2(H 2O)]H 2PO4 ⋅2H 3PO4 ⋅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)Py 2Cl 2(H 2O)]H 2PO4 ⋅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 Ru 2P or RuP 2. Preliminary photoisomerization experiments for trans-[Ru(NO)Py 2Cl 2(OH)] and trans-[Ru(NO)Py 2Cl 2(H 2O)]H 2PO4 ⋅H2O suggested the presence of metastable states. DSC experiments have been carried out for both compounds. The measured kinetic parameters for the metastable decay for trans-[Ru(NO)Py 2Cl 2(H 2O)]H 2PO4 ⋅H2O were E a = 90.7 ± 2.4 kJ/mol, log 10(k0/sec −1) = 18.9 ±0.6, and T d = 217 K. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)441-448
Number of pages8
JournalJournal of Chemical Sciences
Volume129
Issue number4
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • DSC
  • photoinduced linkage isomer
  • pyridine
  • Ruthenium nitrosyl complexes
  • ruthenium phosphide
  • X-ray crystallography-thermal analysis
  • SERIES
  • REDUCTION
  • CRYSTAL-STRUCTURE
  • COMPLEXES
  • LIGHT
  • INDUCED METASTABLE STATES

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