Complexes of pyridinium cyclopentadienylide with chromium and molybdenum carbonyls

Conclusions The pyridinium cyclopentadienylidechromium(molybdenum) tricarbonyl complexes were synthesized and a study was made of their IR, NMR, and mass spectra.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 227–228, January, 1977.The authors express their gratitude to N. I. Vasyukova and G. A. Panosyan for taking the mass and NMR spectra.     

Mass spectrometry of π-complexes of transition metals XVIII. Products of addition of hydrogen and deuteroexchange in mass spectra of some π-complexes of transition metals

In the mass spectra of some π-complexes of transition metals, obtained by their simultaneous evaporation with organic molecules and deuteroanalogues, protonated (deuterated) molecular and fragment ions have been discovered. They are formed as a result of ion—molecule reactions in the ionization chamber of the mass spectrometer at pressures of 10^?510^?4mmHg as well as during the interactions of neutral molecules.     

Metallocenyl cations : I. Stable manganese-stabilised carbonium ions

Stable α-cymantrenylcarbonium ions have been identified by solution IR spectroscopy. The substitution of tert-phosphine for CO markedly stabilises the carbonium ions.     

System HCOOH-sulfo cationite KU-1 as proton donor in ionic hydrogenation

Conclusions The system HCOOH-sulfo cationite KU-1 is a convenient proton donor and at the same time is a medium for running the ionic hydrogenation of olefins, carbonyl compounds, thiophenes, and azomethines.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1162–1164, May, 1981.