Abstract
(Triphenylphosphine)(selenourea)gold(I) chloride [Ph3PAuSeC‐ (NH2)2]+ Cl‐ (1) and the corresponding dppm derivative dppm[AuSeC(NH2)2]22+ 2l‐ (2) are prepared from SeC‐ (NH2)2 and the appropriate chloro(phosphine)gold(I) complex. The reaction between 1 and aqueous Na2CO3 leads to the neutral complex μ‐selenido{bis[(triphenylphosphine)gold(I)]} (Ph3PAu)2Se (3). An analogous reaction with 2 leads to a dark red oil, which has not yet been characterized. The reaction between 3, Ph3PAuCl, and AgSbF6 leads to the ionic complex [(Ph3PAu)3Se]+SbF6‐ (4) in good yield. X‐ray structure analyses of 1,2, and 3 confirm the expected linear geometry at the gold atom and reveal short intramolecular Au – Au contacts for 2 and 3. Short nonbonding distances between the nitrogen atoms of the amino groups and the chloride ions in the crystal structures of 1 and 2 probably indicate hydrogen bonds.
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