Abstract Bis(dipyridiniomethan)-di-μ-iodotetraiododicuprate(I), [Py2CH2]2[Cu2I6] and two modifications of bis(tetraphenylphosphonium )-di-μ-iodo-diiododicuprate(I) were obtained by reacting Cu with I2 and [Py2CH2]I2 or [PPh4]I in acetone. The crystal structures of these com pounds are built up by the cations and the binuclear anions: edge sharing Cul4-tetrahedra in [Cu2I6]4- and edge sharing, nearly trigonal planar Cul3-units in [Cu2I4]2-. Whereas the Cu2I4 anions (-A ) are centrosymmetric and almost planar, the anions (-B) are folded about the bridging I···I contact. The anions [Cu2I6] are in intimate contact with the cations via short intermolecular I···N and I···C interactions.
Durch Umsetzung von Cu‐ Pulver mit I, und [PyzCHzllz oder [PPh4]l in Aceton werden [Py2CH2]2[Cu216] (I) und zwei Modifikationen von,[Ph4P]2[Cu2I4] (IIa) und (IIb) erhalten.
The 1,3-oxazolidine ring is completely planar (k 1 pm) and the Au atom is only 13 pm above this plane, i.e. the carbene C atom has practically a trigonal-planar environment. 0 Verlag Chemie GmbH, 0-6940 Weinheim, 1984 0570-0833/84/0505-0378 $02.50/0 Angew. Chem. Int. Ed. Engl. 23 (1984) No. 5
organische Phase wird uber MgS04 getrocknet und wie be-schriebenl2I aufgearbeitet.Hochdruck-Reaktion: Michael-Acceptor (3 mmol) und Donor (6 mmol) werden unter N2 rnit IM-THF-Losung von nBu4NF1'I verdunnt in einer 10 mL-Teflonkapsel bei 30°C 5 d unter einem Druck von 10 kbar gehalten; danach wird wie iiblich aufgearbeitet.
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