X_ray photoelectron spectroscopic study o f metal complexes o f substituted 2 4 pentanedione cis_bis ethylene diamino alkyl amino nitrito cobalt _III_ nitrates trans_bis _I_methyl_ethylenediamino_bis _thiocyanato_ cobalt _III_ thiocyanate and trans_bis _propylene diamino_bis _thiocyanato_ cobalt _III_ thiocyanate