Palladium(II) halide complexes with 2,5-dimethyl-, 2-amino-, 2-amino-5-methyl-, 2-ethylamino- and 2-mercapto-5-methyl-1,3,4-thiadiazole

Add time:08/21/2019    Source:sciencedirect.com

Some palladium(II) halide complexes with 2,5-dimethyl- (DTZ), 2-amino- (ATZ), 2-amino-5-methyl- (MATZ), 2-ethylamino- (EATZ) and 2-mercapto-5-methyl-1,3,4-thiadiazole (MTTZ) have been prepared and studied: PdX2 · 2L (L = DTZ, ATZ, MATZ : X = Cl, Br, I; L = EATZ: X = Br, I; L = MTTZ: X = I), PdCl2 · 2.5EATZ, PdCl2 · 3MTTZ, PdBr2 · 1.5MTTZ and PdX2 · L (L = DTZ, ATZ, MATZ, EATZ: X = Cl, Br; L = MTTZ: X = Cl(H2O), Br). In the PdX2 · 2L, PdCl2 · 2.5EATZ and PdCl2 · 3MTTZ complexes the palladium ions are cis-(2X, 2L)-coordinated, the coordination sites being Nring for DTZ, NR2 for ATZ, MATZ, EATZ and C = S for MTTZ. PdBr2 · 1.5MTTZ may be formulated as cis[PdBr2-2L] · [PdBr2 · L]. In the PdX2 · L complexes the ligand very likely acts as bidentate by using a ring-nitrogen atom as the second coordination site.

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