Synthesis and Comparative Study of the Physicochemical Properties of the Related Optically Active Complexes [(μ-H)Os3{μ-OCNH-(R)-CHMePh} (CO)9L]{L=CO, NMe3, (S)-(-)-, or (R)-(+)-NH 2CHMePh}, Toward the Cluster and Amino Ligand Configuration Determination Full article
Journal |
Tetrahedron: Asymmetry
ISSN: 0957-4166 , E-ISSN: 1362-511X |
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Output data | Year: 2004, Volume: 15, Number: 1, Pages: 109-118 Pages count : 10 DOI: 10.1016/j.tetasy.2003.11.012 | ||
Tags | TRIOSMIUM CLUSTERS | ||
Authors |
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Affiliations |
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Funding (2)
1 | Russian Foundation for Basic Research | 01-03-32426 |
2 | Russian Foundation for Basic Research | 03-03-06628 |
Abstract:
A series of eight related optically active complexes having two or three stereogenic centers, [(l-H)Os3{l-OCNH-(R)-
CHMePh}(CO)10], 1, and [(l-H)Os3{l-OCNH-(R)-CHMePh}(CO)9L] {L ¼ NMe3, 2, and (S)-())- or (R)-(+)-NH2CHMePh, 3},
have been prepared and characterized by 1H and 13C NMR, IR, mass-spectral, and [α]D data. As shown by comparison of 1H NMR spectra in the highly informative upfield region, the relative values of dl-H for corresponding diastereomers depend on a number of stereogenic centers in the molecule, the nature of L (CO or amine) and solvent and most of all on the absolute configuration of the cluster fragment [HOs3(l-OCN)]. The relative positions of hydride signals in 1H NMR spectra of the diastereomeric pairs 1–3 correlates with the cluster-fragment configuration. The largest value of nonequivalence Ddl-H (0.36 ppm) was demonstrated by the diastereomers having the opposite cluster-fragment configurations and L ¼ (S)-())-NH2CHMePh in CDCl3 solution.
Cite:
Ershova V.A.
, Pogrebnyak V.M.
, Golovin A.V.
, Virovets A.V.
, Semyannikov P.P.
Synthesis and Comparative Study of the Physicochemical Properties of the Related Optically Active Complexes [(μ-H)Os3{μ-OCNH-(R)-CHMePh} (CO)9L]{L=CO, NMe3, (S)-(-)-, or (R)-(+)-NH 2CHMePh}, Toward the Cluster and Amino Ligand Configuration Determination
Tetrahedron: Asymmetry. 2004. V.15. N1. P.109-118. DOI: 10.1016/j.tetasy.2003.11.012 WOS Scopus РИНЦ
Synthesis and Comparative Study of the Physicochemical Properties of the Related Optically Active Complexes [(μ-H)Os3{μ-OCNH-(R)-CHMePh} (CO)9L]{L=CO, NMe3, (S)-(-)-, or (R)-(+)-NH 2CHMePh}, Toward the Cluster and Amino Ligand Configuration Determination
Tetrahedron: Asymmetry. 2004. V.15. N1. P.109-118. DOI: 10.1016/j.tetasy.2003.11.012 WOS Scopus РИНЦ
Dates:
Submitted: | Sep 4, 2003 |
Accepted: | Nov 14, 2003 |
Published online: | Dec 15, 2003 |
Published print: | Jan 12, 2004 |
Identifiers:
Web of science | WOS:000187893400018 |
Scopus | 2-s2.0-0346787838 |
Elibrary | 13451446 |
Chemical Abstracts | 2003:1001938 |
Chemical Abstracts (print) | 140:271003 |
OpenAlex | W2038521358 |