On coordination number of uranium in crystallohydrates and hydratoethers of uranyl halogenacetates

The problem of coordination number (c. n.) of uranyl in the series of crystallohydrates and crystallosolvates of uranyl halogenacetates is discussed. The probability of the maximum c. n. 6 in the absence of steric obstacles on the part of carboxylate-ion increases with the decrease of electron-donor ability of anion which can be connected both with geometric factors and with electron density redistribution in the internal coordination sphere of uranyl