The Library
Non-planar manganese Schiff-base complexes; synthesis and molecular structures
Tools
UNSPECIFIED (2003) Non-planar manganese Schiff-base complexes; synthesis and molecular structures. POLYHEDRON, 22 (12). pp. 1617-1625. doi:10.1016/S0277-5387(03)00285-7 ISSN 0277-5387.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1016/S0277-5387(03)00285-7
Abstract
The reactions of anhydrous sodium salts of three chiral biaryl-bridged salicylaldimine tetradentate proligands H2L with manganese(II) chloride give the corresponding solvated complexes [(MnL)-L-II]. The molecular structure of one chiral nonracemic example with a relatively low steric demand ligand set is shown to be composed of a homochiral dimer with bridging phenoxy groups. Both LMn units adopt the cis-beta structure with Delta helicity as predetermined by the (R)-configuration of the biaryls. Oxidation of these compounds with halogens gives manganese(III) complexes. A complex [(MnLI)-L-III] has a trigonal bipyramidal structure with similar cis-beta structure to that above. In contrast, the complex [MnL(OH2)(2)]Cl has the rather rare C-2-symmetric cis-alpha structure. It is thus apparent then that while the biaryl unit in these and similar compounds is able to predetermine the chirality-at-metal very efficiently, it is quite possible for conversions between diastereomeric forms cis-beta and cis-alpha, albeit with the same helicity, to occur in response to the nature of the co-ligands. (C) 2003 Elsevier Science Ltd. All rights reserved.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | POLYHEDRON | ||||
Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | ||||
ISSN: | 0277-5387 | ||||
Official Date: | 15 June 2003 | ||||
Dates: |
|
||||
Volume: | 22 | ||||
Number: | 12 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 1617-1625 | ||||
DOI: | 10.1016/S0277-5387(03)00285-7 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |