Publication Type:

Journal Article

Source:

Polyhedron, Volume 125, p.68 - 73 (2017)

URL:

http://www.sciencedirect.com/science/article/pii/S0277538716304429

Keywords:

NMR spectroscopy

Abstract:

Abstract The benzene, CO, and \{PPh3\} adducts [HB(3-(CF3),5-(Ph)Pz)3]AgL (L = C6H6, CO, or PPh3) have been synthesized by a metathesis process using [HB(3-(CF3),5-(Ph)Pz)3]Na(THF), CF3SO3Ag, and the corresponding co-ligands. These silver(I) adducts have been characterized by \{NMR\} spectroscopy, and by X-ray crystallography. In all cases the Scorpionate is bound to silver in typical κ3-fashion. The X-ray crystallographic data of [HB(3-(CF3),5-(Ph)Pz)3]Ag(η2-C6H6) show that it has a η2-bound benzene molecule. \{NMR\} data point to fluxional behavior in solution. The 13C \{NMR\} resonance corresponding to the \{CO\} moiety of [HB(3-(CF3),5-(Ph)Pz)3]Ag(CO) appears as a single peak at δ 177.4 ppm and the ν ¯ co is observed at 2148 cm−1. These values indicate the presence of a fairly Lewis acidic silver atom in [HB(3-(CF3),5-(Ph)Pz)3]Ag(CO) and significantly diminished Ag → \{CO\} π-backbonding. Interesting coupling is observed in the solution 19F and 31P \{NMR\} spectra of the Ag(I) adduct [HB(3-(CF3),5-(Ph)Pz)3]Ag(PPh3). A detailed analysis of the spectral and structural features of these complexes has been described herein

Cite this Research Publication

S. G. Ridlen, Dr. Naveen V. Kulkarni, and Dias, H. V. Rasika, “Partially fluorinated Scorpionate [HB(3-(CF3),5-(Ph)Pz)3]− as a supporting ligand for silver(I)-benzene, -carbonyl, and -PPh3 complexes”, Polyhedron, vol. 125, pp. 68 - 73, 2017.

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