2019
DOI: 10.1107/s2056989019013719
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Unexpected reactions of NHC*—CuI and —AgI bromides with potassium thio- or selenocyanate

Abstract: This article reports the unexpected reactions of Cu and Ag NHC bromides with potassium thio- or seleno­cyanates. It contains the first report of the boomerang-shaped [Ag(SCN)3]2− ion.

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“…However, there are few trivalent, dianionic silver complexes of the composition [AgX 3 ] 2– to be found in the literature. Some tri­(pseudo)­halogenoargentates [X = Cl, Br, I, SCN, SC 6 H 4 - p -Cl, SC 6 H 4 - p -Br] were structurally characterized. Since phosphoranes represent protonated phosphoranide ions and it is possible to isolate dimeric species (see Scheme ), the chemical behavior of phosphoranide ions resembles that of halide ions; thus they may be regarded as pseudohalide ions .…”
Section: Introductionmentioning
confidence: 99%
“…However, there are few trivalent, dianionic silver complexes of the composition [AgX 3 ] 2– to be found in the literature. Some tri­(pseudo)­halogenoargentates [X = Cl, Br, I, SCN, SC 6 H 4 - p -Cl, SC 6 H 4 - p -Br] were structurally characterized. Since phosphoranes represent protonated phosphoranide ions and it is possible to isolate dimeric species (see Scheme ), the chemical behavior of phosphoranide ions resembles that of halide ions; thus they may be regarded as pseudohalide ions .…”
Section: Introductionmentioning
confidence: 99%