ISSN:
1572-901X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Cobalt(III) complexes of 2-acetylpyridine 3-pyrrolidinyl-,3-piperidinyl-, 3-hexamethyleneiminyl- and 3-azabicyclo-[3.2.2]nonylthiosemicarbazone, [Co(Lpo)2]BF4, [Co-(Lpip)2]BF4, [Co(Lhexim)2]BF4 and [Co(Lbcn)2]BF4, respectively; 2-formylpyridine 3-piperidinyl-, 3-hexa-methyleneiminyl- and 3-azabicyclo[3.2.2]nonylthiosemi-carbazone, [Co(pip)2]BF4, [Co(hexim)2]BF4 and [Co(bcn)2]BF4, respectively; and aceylpyrazine 3-aza-bicyclo[3.2.2]nonylthiosemicarbazone, [Co(Pzbcn)2]BF4, have been synthesized and their spectral properties measured. The1H and13C-n.m.r. spectra show the uncomplexed thiosemicarbazones to be mixtures of as many as three isomers, and that the two ligands in the cobalt(III) complexes are nearly identical. The crystal structure of [Co(Pzbcn)2]BF4 shows the two ligands coordinated in a mer-configuration. Bond lengths and angles in this complex are compared with data previously reported for thiosemicarbazone complexes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00143482
Permalink