Skip to main content

Synthesis and Characterisation of trans- and cis-[Co(en)2(py)X]n+ (X=Cl, OH, OH2) and Optical Resolution of the cis Complexes

Buy Article:

$55.00 plus tax (Refund Policy)

The synthesis of the putative trans-[Co(en)2(py)Cl]2+ complex, isolated as various salts, is reported. New or revised procedures are given for precursor complexes, some of which were known previously, and 2D NMR studies which permit the unambiguous assignment of the NH resonances for all the trans ions. NMR characterisation of a synthetic precursor, the double salt trans-[(NO2)(en)2Co(OH)…H…(OH)Co(en)2(NO2)]3+, which entails the symmetric bridging H3O2 ion in the solid state (X-ray structure), provides evidence of a kinetic role for the H3O2 bridge which must persist at low levels in solution. Reliable NMR techniques for assigning the NH protons are discussed. The synthesis and a reliable optical resolution of the well known cis-[Co(en)2(py)Cl]2+ complex are also reported, along with the syntheses of trans-, rac-cis and Λ-cis-[Co(en)2(py)OH2]3+ derivatives, all isolated for the first time. ORD and CD data are reported for all the resolved ions, and absolute configurations have been determined through chemical correlations.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: Cobalt; Geometric isomers; Pyridine complexes; Resolution; Synthesis

Document Type: Research Article

Publication date: 2002-01-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more