ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

Copper complexes with organic ligands. I. Chemistry of salicylatocopper(II) complexes

J. Krätsmár-Šmogrovič and V. Jokl

Komenský University, Bratislava

 

Abstract: The interaction of Cu2+ and C6H4(OH)CO2- in aq. solns. to form ([Cu(Sal)2(H2O)2].2H2O) (I) (HSal is salicylic acid) was described. At pH 4.0 in the system Cu2+ - Sal- - H2O, I is crystd., if Cu2+:Sal- is in the equiv. 1:2 or equimolar 1:1 ratio. The molar concns. of satd. aq. solns. of I are 2.46 × 10-2 at 20°, 3.33 × 10-2 at 30°, 4.69 × 10-2 at 40°, and 6.82 × 10-2 at 50°. I loses the bound H2O at room temp., if the H2O vapor pressure over the crystals is ≤1.3 mm. Complete dehydration is at 85-90° and is reversible. By spectrophotometric and paper-electrophoretic methods, it was detd. that at pH 2-6 and a component ratio of 1:1, this Cu(II) complex is formed in 2 steps: Cu2+ + Sal- ↹ [Cu(Sal)]+; [Cu(Sal)]+ + Sal- ↹ [Cu(Sal)2]. At pH 6-7, a chelate is formed: [Cu(Sal)]+ + H2O ↹ [Cu(C6H4OCO2)] + H3O+.

Full paper in Portable Document Format: 1912a881.pdf (in Slovak)

 

Chemical Papers 19 (12) 881–891 (1965)

Tuesday, July 23, 2019

IMPACT FACTOR 2018
1.246
SCImago Journal Rank 2018
0.274
SEARCH
Advanced
VOLUMES
International Conference on Coordination and Bioinorganic Chemistry
46th International Conference of SSCHE
© 2019 Chemical Papers