On the Ambident Behaviour of Dicyanmethanidonitrite; Syntheses and Characterization of Complexes of the Type [M{N(O)C(CN)2}(PPh3)n] (M = CuI, AgI; n = 2, 3)

✍ Scribed by Lothar Jäger; Carola Tretner; Helmut Hartung; Matthias Biedermann

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 279 KB
• Volume: 1998
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199807)1998:7<1051::aid-ejic1051>3.0.co;2-c

✦ Synopsis

Complexes of the type [M{N(O)C(CN) 2 }(PPh 3 ) n ] (M = Cu I , oxygen atom (silver). In addition the two copper and silver complexes [M{N(O)C(CN) 2 }(PPh 3 ) 2 ] 2 are not isostructural but Ag I , n = 2, 3) were synthesized by metathesis of K[N(O)C(CN) 2 ] and [M(NO 3 )(PPh 3 ) n ]. The complexes were have quite different structures. For M = Cu the two copper atoms are doubly bridged by two NCCN sequences, forming characterized by 13 C-, 31 P-NMR and IR spectroscopy and elemental analyses. The crystal structures of an approximately planar Cu(NCCN) 2 Cu ring. On the other hand, in the homologous silver derivative the metal atoms [M{N(O)C(CN) 2 }(PPh 3 ) 2 ] 2 (M = Cu I , Ag I ) have been determined by X-ray diffraction. Depending on the metal are also doubly bridged, but by two NO groups, thus forming a planar six-membered ring. atom in the complexes [M{N(O)C(CN) 2 }(PPh 3 ) 3 ] the ionic ligand is coordinated via the central nitrogen (copper) or the