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Coordination geometries for palladium and platinum: theoretical studies and the synthesis and structure of tris(indazol-1-yl)borate complexes MMe3{(ind)3BH} by Allan J Canty; Alain Dedieu; Hong Jin; Anne Milet; Brian W Skelton; Swiatoslaw Trofimenko; Allan H White is a Chemistry article available to read on EtoBox.
What is Coordination geometries for palladium and platinum: theoretical studies and the synthesis and structure of tris(indazol-1-yl)borate complexes MMe3{(ind)3BH} about?
The tris(indazol-1-yl)borate complexes PdMe 3 {(ind) 3 BH} (2a%) and PtMe 3 {(ind) 3 BH} • 0.5CH 2 Cl 2 (2b%) are obtained on reaction of PdMe 2 (tmeda) (tmeda = N,N,N%,N%-tetramethylethylenediamine) or [PtMe 2 (SEt 2 )] 2 with Tl[(ind) 3 BH], respectively, followed by addition of iodomethane. X-ray structural studies of these complexes, together with theoretical calculation at the SCF level of geometries for these complexes and [MMe 3 {(pz) 3 CH}] + using [(H 2 C N -NH) 3 BH] -as a model for [(ind) 3 BH] -and (H 2 C N-NH) 3 CH as a model for tris(pyrazol-1-yl)methane, respectively, are reported. The theoretical studies model the trends in coordination geometry determined crystallographically on going from Pd to Pt and from [(ind) 3 BH] -to (pz) 3 CH as ligands, in particular M-N is longer and the %N•••N% 'bite' is larger for palladium than platinum complexes, and the N•••N% 'bite' is larger for the borate complexes. Calculations at the SCF level indicate that [(pz) 3 BH] -has a larger intrinsic 'bite' than isoelectronic (pz) 3 CH.
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- Author
- Allan J Canty; Alain Dedieu; Hong Jin; Anne Milet; Brian W Skelton; Swiatoslaw Trofimenko; Allan H White
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)
- Published
- 1999
- Language
- EN
- Field
- Chemistry (Physical Sciences)