Abstract

In this work, we show by a simple empirical approach that a linear relationship between observed 195Pt NMR frequencies and the overall sum of the ionic radii of the coordinated halido ligands [Σ(rh)] exists in square-planar PtII complexes of the type [PtXnY4–n]2– (1 ≤ n≤4; X, Y = Cl, Br, I). Another finding was that such square-planar complexes could be empirically described as octahedral complexes, with the two lobes of the 5dz2 orbital above and below the coordination plane acting as two pseudo-halido ligands, each showing a constant apparent radius of around 207 pm. According to our approach, the overall apparent radius of around 415 pm produces constant 195Pt NMR shielding for all [PtXnY4–n]2– complexes of about 10450 ppm. This result is 1) consistent with the theoretically calculated overall 5d shell lone-pair shielding observed in square-planar PtII with respect to octahedral PtIV complexes and 2) almost coincident with the already measured chemical shift anisotropy (CSA) of the K2[PtCl4] complex both in solution and in the solid state (single crystal).

Autore Pugliese

• Fanizzi Francesco Paolo , Benedetti Michele

Tutti gli autori

• Benedetti M. , De Castro F. , Fanizzi F.P.

Titolo volume/Rivista

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

Anno di pubblicazione

2016

ISSN

1434-1948

ISBN

Non Disponibile

Numero di citazioni Wos

5

Ultimo Aggiornamento Citazioni

27/04/2018

Numero di citazioni Scopus

4

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile