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Kolotilov, S.V., Addison, A.W., Trofimenko, S., Dougherty, W. and Pavlishchuk, V.V. (2004) Efficient mechanochemical synthesis of tris (pyrazolylborate) complexes of manganese(II), cobalt(II) and nickel(II). Inorganic Chemistry Communications, 7, 485. doi:10.1016/j.inoche.2004.01.009

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• TITLE: Solid state transformation of cis and trans methylcyclopentadienyl molybdenumdicarbonyltriphenylphosphineiodide on pelleting utilizing different diluents

  AUTHORS: Olalere G. Adeyemi, Umaru Salami

  KEYWORDS: Solid State; cis/trans-[(η5-C5H4Me)Mo(CO)2PPh3I]; Pelleting; Diluents; FT IR

  JOURNAL NAME: Open Journal of Inorganic Chemistry, Vol.2 No.2, April 24, 2012

  ABSTRACT: [(η5-C5H4Me)Mo(CO)2PPh3I] undergoes solid state transformation on the formation of a good pellet for FT IR measurement. There was a formation of the products mixture on pelleting using different diluents of group I metal salts on either the cis or the trans isomer of the [(η5-C5H4Me)Mo(CO)2PPh3I] complex. The cis or the trans isomer gave the same IR spectra i.e. a mixture of cis and trans isomer of the complex. It does not matter the isomer started with in the course of solid state transformation reaction, an equilibrium ratio of 30/70 (trans/cis) will still be achieved. The solid state IR spectra show very strong peaks at νco 1957, 1947 and strong peaks at 1867, 1853 cm–1. The individual IR cis/trans isomer will therefore show at 1947 and 1853/1957 and 1867 cm–1. The solution IR spectra gave, cis = 1961, 1875 and trans = 1963, 1882 cm–1 in dry CHCl3. Hence, most of the solid state IR measurement of the organometallic complex of the type (η5-C5H4Me)Mo(CO)2(PPh3)I on pelleting will give isomer mixture.