RHODIUM(III) AND RUTHENIUM(II) COMPLEXES WITH THE CHIRAL PHOSPHINE-ALCOHOL Ph2PCH2CHMeCH2OH: SYNTHESIS AND CHARACTERISATION
Reaction of the dinuclear complex [{(eta5-C5Me5)RhCl} 2(µ-Cl)2] with the chiral phosphine (R)-Ph2PCH2CHMeCH2 OH leads to the complex [{(eta5-C5Me5)RhCl 2(eta¹-Ph2PCH2 CHMeCH2OH-P)](1). This reaction, in the presence of AgBF4, yields the cationic compound [{(eta5-C5Me5)RhCl(eta²- Ph2PCH2CHMeCH2OH-P,O...
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| Autores principales: | , , |
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| Lenguaje: | English |
| Publicado: |
Sociedad Chilena de Química
2002
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000300005 |
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| Sumario: | Reaction of the dinuclear complex [{(eta5-C5Me5)RhCl} 2(µ-Cl)2] with the chiral phosphine (R)-Ph2PCH2CHMeCH2 OH leads to the complex [{(eta5-C5Me5)RhCl 2(eta¹-Ph2PCH2 CHMeCH2OH-P)](1). This reaction, in the presence of AgBF4, yields the cationic compound [{(eta5-C5Me5)RhCl(eta²- Ph2PCH2CHMeCH2OH-P,O)]BF 4(2). Variable-temperature ¹H NMR and circular dichroism experiments support the stereoselective eta²-chelate coordination of the ligand and the proposed configuration for the metal centre. In a similar way, the reaction of the dimer [{(eta6-C6Me6)RuCl} 2(µ-Cl)2] with the ligands (R)- and (S)-Ph2PCH2CHMeCH2 OH afford the neutral complexes [(eta6-C6Me6)RuCl 2{eta¹-PPh2CH2 CHMeCH2OH-P}] [R-ligand (3), S-ligand (4)], which in turn react with AgBF4 to give the cationic compounds [(eta6-C6Me6)RuCl{eta²-PPh2CH2CHMeCH2 OH-P,O}]BF4 [R-ligand (5), S-ligand (6)]. All complexes have been characterised by elemental analysis, IR and multinuclear NMR spectroscopies |
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