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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

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Tetrahedron: Asymmetry
ISSN: 0957-4166 , E-ISSN: 1362-511X
Output data Year: 2004, Volume: 15, Number: 1, Pages: 109-118 Pages count : 10 DOI: 10.1016/j.tetasy.2003.11.012
Authors Ershova Victoria A. , Pogrebnyak Vladimir M. , Golovin Anatoly V. , Virovets Alexander V. , Semyannikov Peter P.
Affiliations
1 Nikolaev Institute of Inorganic Chemistry SB RAS

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 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Sep 4, 2003
Accepted: Nov 14, 2003
Published online: Dec 15, 2003
Published print: Jan 12, 2004
Identifiers:
publication_identifier.wos_identifier_type WOS:000187893400018
publication_identifier.scopus_identifier_type 2-s2.0-0346787838
publication_identifier.rinz_identifier_type 13451446
publication_identifier.accession_number_identifier_type 2003:1001938
publication_identifier.chemical_accession_number_identifier_type 140:271003
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