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Synthesis, characterization and some reactions of trans‐[Co(NH 3 ) 4 (CH 3 NH 2 )Br] 2+ and trans‐[Co(NH 3 ) 4 (CH 3 NH 2 )(NO 3 )] 2+ complexes
Author(s) -
Sienra B.,
Massaferro A.,
Piriz MacColl C. R.
Publication year - 1990
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19905900122
Subject(s) - aquation , chemistry , cis–trans isomerism , ligand (biochemistry) , hydrolysis , stereochemistry , infrared spectroscopy , spectroscopy , spectral line , medicinal chemistry , organic chemistry , kinetics , reaction rate constant , biochemistry , receptor , quantum mechanics , astronomy , physics
The preparation of trans‐[Co(NH 3 ) 4 (CH 3 NH 2 )Br] 2+ and trans‐[Co(NH 3 ) 4 (CH 3 NH 2 )‐(NO 3 )] 2+ complexes is described. The UV‐VIS spectra of the complexes indicate a decrease of the ligand field compared to the parent pentaammines. Infrared spectra match with the pattern of the corresponding pentaammines. The catalyzed (by Hg 2+ ) aquation of the trans‐bromomethylamine complex go under retention of the stereochemical configuration. The base hydrolysis (studied at 25°C) products show trans to cis rearrangement for both complexes. 1 H NMR spectroscopy is used for identification of the stereochemical configuration of the compounds.