Palladium(II) complexes with R2edda derived ligands. Part VI. 0,0-Diisopropyl ester of N,N'-1,2-ethanediylbis-L-leucine, dihydrochloride dihydrate and its palladium(II) complex: Synthesis and characterization

Abstract

A new R2edda-type ester, O,O'-diisopropyl ester of N,N-1,2-ethanediylbis-L-leucine, dihydrochloride dihydrate, [(S,S)-H2iPr2eddl]Cl2-2H2O, 1, and its palladium(II) complex, dichlorido(O,O'-diisopropyl-N,N-1,2-ethanediylbis-L-leucinate) palladium(II) hemihydrate, [PdCl2{(S,S)-iPr2eddl}]- 0.5H2O, 2, were synthesized and characterized by elemental analysis, and IR and NMR spectroscopy. As expected, the palladium(II) complex was found in two from three possible diastereoisomeric forms (R,R), (S,S) and (R,S) = (S,R).

Nov estar R2dda-tipa 0,0'-diizopropil estar N,N'-1,2-etandiilbis-L-leucina, dihidrohlorid dihidrat [(S,S)-H2iPr2eddl]Cl2-2H2O (1) i njegov kompleks paladijuma(II), dihlorido(0,0'-diizopropil-N,N'-1,2-etandiilbis-L-leucinat)paladijum(II)- -hemihidrat [PdCl2{(S,SHPr2eddl}]-0.5H2O (2) su sintetisani i okarakterisani uz pomoć elementalne analize, IR i NMR spektroskopije. Kalijum-tetrahloridopaladat(II), reagujući sa [(S,S)-H2iPr2eddl]Cl2-2H2O, očekivano daje paladijumov kompleks 2 u obliku dva od moguća tri dijastereoizomera, (R,R), (S,S) i (R,S) = (S,R), što je potvrđeno uz pomoć NMR spektroskopije, a u saglasnosti je sa ranije urađenim DFT proračunima. PR Projekat Ministarstva nauke Republike Srbije, br. 172035.