Summary
An investigation of vibrational spectra of europium pyrosilicate with small additions of other rare earth metals and binary systems (R, R′)2Si2O7 confirms the assumption as to the change in the coordination state of cations and the reason for the existence of three structural types of rare earth metal pyrosilicates.
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A. N. Lazarev and T. F. Tenisheva, Izv. AN SSSR. Otd. khim. n. 1961, 964.
L. Pauling, The Nature of the Chemical Bond [Russian translation], Goskhimizdat, M.-L., 1947, p. 368–372.
I. A. Bondar', Izv. AN SSSR. Otd. khim. n. 1962, No. 3; N. A. Toropov and F. Ya. Galakhov, Izv. AN SSSR. Otd. khim. n. 1962 (in press).
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The authors are deeply grateful to F. Ya. Galakhov for providing the specimens of silicates of the system (Y1−x,Erx)2Si2O7.
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Lazarev, A.N., Tenisheva, T.F., Bondar', I.A. et al. The structure of rare earth pyrosilicates. Russ Chem Bull 11, 514–516 (1962). https://doi.org/10.1007/BF00904744
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DOI: https://doi.org/10.1007/BF00904744