| Abstract: | On the Coordination Behaviour of Phenylhydrazonepropanedinitriles: Preparation and Structural Characterization of Silver(I) Complexes The preparation of novel silver(I) complexes with anions of phenylhydrazonepropanedinitriles XC6H4NNC(CN)2]— (X = H or NO2) is described. The structures of the following complex compounds are determined by X‐ray diffraction on single crystals: Ag{O2NC6H4NNC(CN)2}] ( 2 ), Ag{C6H5NNC(CN)2}(PPh3)] · CH2Cl2 ( 3 · CH2Cl2), Ag{C6H5NNC(CN)2}(PPh3)2] · 0, 5 CH2Cl2 ( 4 · 0, 5 CH2Cl2) and Ag(PPh3)4]C6H5NNC(CN)2] ( 5 ). In these complexes a variety of coordination modes of the phenylhydrazonepropanedinitrile anions are observed. In 3 and 4 the phenylhydrazonide anion is coordinated via the hydrazone nitrogen atom N(2). 2 shows the structure of a coordination polymer, where the phenylhydrazone coordinates as a tridentate ligand through both nitrile nitrogen atoms and the hydrazone nitrogen atom N(2). In 5 appears a free, non coordinated phenylhydrazonide anion. |
