Coordination properties of the multifunctional S,N,S zwitterionic ligand EtNHC(S)Ph2PNPPh2C(S)NEt
| Autor: | Daniele Cauzzi, Roberto Pattacini, Antonio Tiripicchio, Giovanni Predieri, Massimiliano Delferro, Claudia Graiff |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Ligand chemistry.chemical_element Protonation Photochemistry Medicinal chemistry Oxidative addition Adduct Ruthenium Coordination complex Inorganic Chemistry chemistry.chemical_compound Deprotonation chemistry Zwitterion Materials Chemistry Physical and Theoretical Chemistry |
| Zdroj: | Coordination Chemistry Reviews. 254:753-764 |
| ISSN: | 0010-8545 |
| DOI: | 10.1016/j.ccr.2009.10.019 |
| Popis: | The reaction of trialkylphoshanes and amino-phosphanes with isothiocyanates yields adducts containing the zwitterionic thioamidyl-phosphonium P+C(S)N− functional group. Ligands containing this group were not previously studied, probably due to their instability towards dissociation, in the presence of metal species able to coordinate the P atom. The ligand EtNHC(S)Ph2P NPPh2C(S)NEt (HEtSNS) was obtained by reaction of Ph2PNHPPh2 with ethylisothiocyanate and proved to be very versatile: it can be protonated giving cation H2EtSNS+ and deprotonated forming the dianion–cation EtSNS−. HEtSNS and its derivatives behave as ligands showing five possible coordination fashions, S,N,S tridentate and S,S-bidentate (with a bite-angle varying from 180° to 90°), S-monodentate, S,S bridging and N,N,N interaction. Here we describe the coordination chemistry of HEtSNS, in particular towards Rh, Cu, Ag and Au, and some properties of its complexes which are still the only examples containing the P+C(S)N− zwitterionic group. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect