NMR Studies of Transformations of Aminoacid Complexes of Pt(II) and Pd(ll) in Solution. 2. Bisalaninates
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766
, E-ISSN: 1573-8779
|
| Output data |
Year: 2000,
Volume: 41,
Number: 2,
Pages: 254-262
Pages count
: 9
DOI:
10.1007/BF02741590
|
| Authors |
Krylova L.F.
1
,
Golovin A.V.
1
|
| Affiliations |
| 1 |
Novosibirsk State University
|
|
Synthetic procedures are suggested for diastereomers of Pt(H) and Pd(H) bischelates with alanine: cis and trans-Pt(l-Ala) 2 , trans-Pt(I-Ala)(d-Ala), trans-Pd(I-Ala)2 , and trans-Pd(l-Ala)(d-Ala). Methods of their isolation in individual solid state are proposed. 1H, 13C, and 195Pt NMR spectral investigations are reported for the individual diastereomers and for M(Ala) 2 racemates in DMSO solution. The trans-isomers of Pd(H) bisalaninates in DMSO solution are transformed into an equilibrium mixture of cis- and trans-isomers. For Pt(ll) complexes, the cis ~ o'ans equilibrium was also found but the equilibration rate is much lower than that for Pd(H) bischelates for both cis- and trans-isomer. An equilibrium
2M(I-Ala)(d-Ala) -><- M(I-Ala)2+M(d-Ala) 2 is also shown to exist.