Browsing by Author "Araos, G"

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    Synthesis of rhodium(III) complexes with the chiral phosphine (S)-Ph2PCH2CHMeCH2OH.: Crystal structure of (SRhSC)-[(η5-C5Me5)RhCl(η2-PPh2CH2CHMeCH2OH-P,O)]BF4
    (2001) Valderrama, M; Contreras, R; Araos, G; Boys, D
    Reaction of dinuclear complex [{(eta (5)-C5Me5)RhCl}(2)(mu -Cl)(2)] with the chiral phosphine (S)-Ph2PCH2CHMeCH2OH leads to the complex [{eta (3)-C5Me5)RhCl2(eta (1)-PPh2CH2CHMeCH2OH-P)] (1). Complex 1 reacts with NaH and T1BF(4) affording the chiral-at-metal rhodium compounds [(eta (5)-C5Me5)RhCl(eta (2)-PPh2CH2CHMeCH2O-P,O)] (2) and [(eta (5)-C5Me5)RhCl(eta (2)-PPh2CH2CHMeCH2OH-P,O)]BF4(3), respectively. Complex 2 has been alternatively prepared by reaction of [{(eta (5)-C5Me5)RhCl}(2)(mu -Cl)(2)] with the sodium salt Ph2PCH2CHMeCH2ONa. Complex 2 reacts with HBF, to give 3. The reaction of 3 with an excess of NaI affords the neutral complex [(eta (5)-C5Me5)RhI2(eta (1)-PPh2CH2CHMeCH2OH-P)] (4). All the complexes have been characterised by elemental analyses and multinuclear NMR spectroscopy. The crystal structure of complex 3 has been determined by X-ray diffraction. (C) 2001 Elsevier Science B.V. All rights reserved.