
TY  - JOUR
A1  - Rastogi, DK 
T1  - Coumarins as ligands. Studies on metal complexes of 8-Amino-7-hydroxy-4-methylcoumarin and 7-Hydroxy-4-methylcoumarin-6-carboxylic acid
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1972
VL  - 25
IS  - 4
SP  - 729
EP  - 737
KW  - 
UR  - https://doi.org/10.1071/CH9720729 
N2  - Some platinum and rare earth metal complexes of 8-amino-7-hydroxy-4-   methylcoumarin, viz. Na2[R~(C10H2NO3)Cl4],H2O, [Ir(C10H8N03)2(0H)(H20)],- 3H20, [Ce(C10H8NO3)3(H2O)2I,6H2O, and [Pr(C10H8N03)3(H20)2],8H2O, and 7-hydroxy-4-methylcoumarin-6-carboxylic acid, viz. [Pd(CllH7O5)2], [Ce(CllH705)3- (H20)2],3HzO, and [Pr(CllH7O5)3(H2O)2], have been studied. These complexes have been isolated and characterized by analyses, conductometric, magnetic, and spectroscopic studies. An octahedral stereochemistry has been assigned to these complexes except for the PdII complex which has a typical square-planar stereo- chemistry. The visible spectra of the PrIII complexes show characteristic f-f transitions and the nephelauxetic effect (1-&#946;) of these transitions has been evaluated. 
ER  -

