Abstract
A mass spectrometric study of the overheated vapor over the complexes Ni(acacen), Cu(acacen), and Zn(acacen) (H2acacen = N,N′-ethylenebis(acetylacetonimine)) has been carried out in the temperature range of 180–760°C. Irrespective of the degree of overheating, the vapor phases over all of these compounds contain no ions heavier than the molecular ion [MO2N2C12H18]+. The existence of molecular ions in the overheated vapor in the double-chamber two-temperature effusion cell is evidence of the high thermal stability of the complexes. The onset temperature of the thermal decomposition of Ni(acacen), Cu(acacen), and Zn(acacen) is 690, 610, and 560°C, respectively. The way of fragmentation of the chelates under electron impact ionization depends on the nature of the metal.
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Original Russian Text © G.V. Girichev, N.V. Tverdova, N.P. Kuz’mina, A.O. Simakov, O.V. Kotova, 2009, published in Zhurnal Neorganicheskoi Khimii, 2009, Vol. 54, No. 12, pp. 2057–2062.
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Girichev, G.V., Tverdova, N.V., Kuz’mina, N.P. et al. Mass spectrometric study of the overheated vapor over Ni(II), Cu(II), and Zn(II) N,N′-ethylenebis(acetylacetoniminato) complexes. Russ. J. Inorg. Chem. 54, 1975–1980 (2009). https://doi.org/10.1134/S0036023609120225
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DOI: https://doi.org/10.1134/S0036023609120225