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On the Ambident Behaviour of Dicyanmethanidonitrite; Syntheses and Characterization of Complexes of the Type [M{N(O)C(CN) 2 }(PPh 3 ) n ] (M = Cu I , Ag I ; n = 2, 3)
Author(s) -
Jäger Lothar,
Tretner Carola,
Hartung Helmut,
Biedermann Matthias
Publication year - 1998
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199807)1998:7<1051::aid-ejic1051>3.0.co;2-c
Subject(s) - chemistry , isostructural , crystallography , copper , metathesis , ligand (biochemistry) , metal , crystal structure , ionic bonding , ring (chemistry) , atom (system on chip) , x ray crystallography , oxygen atom , stereochemistry , molecule , diffraction , ion , biochemistry , receptor , organic chemistry , computer science , embedded system , polymerization , polymer , physics , optics
Abstract Complexes of the type [M{N(O)C(CN) 2 }(PPh 3 ) n ] (M = Cu I , 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 characterized by 13 C‐, 31 P‐NMR and IR spectroscopy and elemental analyses. The crystal structures of [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 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 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 have quite different structures. For M = Cu the two copper atoms are doubly bridged by two NCCN sequences, forming an approximately planar Cu(NCCN) 2 Cu ring. On the other hand, in the homologous silver derivative the metal atoms are also doubly bridged, but by two NO groups, thus forming a planar six‐membered ring.