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Leitz, Dominik; Virmani, Alan; Morgenstern, Yvonne; Zischka, Florian; Kornath, Andreas J. (2018): Preparation and Structure of Protonated Selenourea. In: European Journal of Inorganic Chemistry, No. 47: pp. 5053-5057
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Abstract

Selenourea was investigated in the binary superacidic media XF/MF5 (X = H, D;M = As, Sb). The protonation selectively takes place at the selenium atom leading to the corresponding salts [(X2N)(2)CSeX](+)[MF6](-). The characterization of the colorless salts was performed by low temperature vibrational spectroscopy. In the case of [(H2N)(2)CSeH](+)[SbF6](-) a single-crystal X-ray structure analysis is reported. The observed Se center dot center dot center dot F interaction in the solid state is discussed in context of sigma-hole interactions. Selenourea undergoes structural changes due to the protonation which are discussed together with quantum-chemical calculations.