Complexes o f Pd(1I) w i t h 2 amino-4,6 dimethylpyrimidine have been studied employing elemental analysis, thermal analysis, U.V.-Vis, i n f r a r e d and Raman techniques.
The complexes have been i s o l a t e d a t PdL2C12(A). Pd2LjC14(B). PdC12.3H20(C) and Pd2L2Br3.3H20(0). The metal i s bound t o the l i g a n d through the nitrogen atom o f the pyrimidine r i n g system w h i l e the amino group i s not involved i n the complex formation. EXPERIMENTAL K2PdC14 and 2-amino 4.6 dimethylpyrimidine (ADMPY) were purchased froin Fluka Chemical Company. A l l the solvents and chemicals used were o f high p u r i t y . The Du Pont 951 has been used f o r thermal analysis, the UV-Vis spectra have been recorded on a Cary 170 model. The Raman spectra were recorded on a Spex 1403 spectrometer. The s o l i d samples were contained i n glass c a p i l l a i r e s o r where necessary, because o f burning, were pressed as a p e l l e t and run i n the spex spinning sample attachment. Spectra Physics model 164 Laser. Power a t the sample was about 100 mW o r less, where burning o f the sample was expected. The i n f r a r e d spectra were recorded w i t h a Perkin Elmer 580 spectrophotometer on K B r p e l l e t s i n the 4000-400 cm-' region, and on Nujol mulls supported by polyethylene windows i n the 500-200 region. The analyses o f the metal ions and halogens were c a r r i e d out by previously described methods (1). w h i l e those o f C, H. N were c a r r i e d o u t i n the l a b o r a t o r i e s o f the National H e l l e n i c Research Foundation i n Athens by O r . Mantros. whose help i s g r a t e f u l l y acknowledged.
Laser power i n the 514 nm l i n e was obtained from a P n e a _ r a ~i n ? _ ~f _ ~h r , ~~e ~~~~~
(1) PdL2C12. A s o l u t i o n o f the l i g a n d (ADMY) 0.2487 g r . (2 m l ) i n water (10 m l ) was added dropwise. w i t h s t i r r i n g , t o a s o l u t i o n o f metal h a l i d e (K2PdC14) 0.326 gr. ( 1 n o l ) i n water.
A yellow powder was p r e c i p i t a t e d a t once. The r e a c t i o n mixture was s t i r r e d f o r 24 h. a t room temperature.
The powder was f i l t e r e d off, Then i t was l e f t i n the r e f r i g a r a t o r f o r one day.