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Synthesis, Reactivity and Crystal Structures of the Palladium(II) Complexes with the Pyrimidine Containing Ligand: Crystal Structures of [Pd(PPh 3 )(η 1 ‐C 4 H 3 N 2 )(η 2 ‐S 2 CNC 4 H 8 )] and [Pd(PPh 3 )(η 1 ‐C 4 H 3 N 2 )(η 2 ‐Tp)]
Author(s) -
Wang HsiaoFen,
Yih KuangHway,
Lee GeneHsiang,
Huang ShouLing
Publication year - 2011
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201190073
Subject(s) - chemistry , triphenylphosphine , palladium , ligand (biochemistry) , medicinal chemistry , denticity , crystal structure , oxidative addition , dichloromethane , acetonitrile , reactivity (psychology) , dithiocarbamate , chelation , pyrimidine , stereochemistry , crystallography , inorganic chemistry , catalysis , solvent , organic chemistry , medicine , biochemistry , receptor , alternative medicine , pathology
Treatment of Pd(PPh 3 ) 4 with 5‐bromo‐pyrimidine [C 4 H 3 N 2 Br] in dichloromethane at ambient temperature cause the oxidative addition reaction to produce the palladium complex [Pd(PPh 3 ) 2 (η 1 ‐C 4 H 3 N 2 )(Br)], 1 , by substituting two triphenylphosphine ligands. In acetonitrile solution of 1 in refluxing temperature for 1 day, it do not undergo displacement of the triphenylphosphine ligand to form the dipalladium complex [Pd(PPh 3 )Br] 2 {μ,η 2 ‐(η 1 ‐C 4 H 3 N 2 )} 2 , or bromide ligand to form chelating pyrimidine complex [Pd(PPh 3 ) 2 (η 2 ‐C 4 H 3 N 2 )]Br. Complex 1 reacted with bidentate ligand, NH 4 S 2 CNC 4 H 8 , and tridentate ligand, KTp {Tp = tris(pyrazoyl‐1‐yl)borate}, to obtain the η 2 ‐dithiocarbamate η 1 ‐pyrimidine complex [Pd(PPh 3 )(η 1 ‐C 4 H 3 N 2 )(η 2 ‐S 2 CNC 4 H 8 )], 4 and η 2 ‐Tp η 1 ‐pyrimidine complex [Pd(PPh 3 )(η 1 ‐C 4 H 3 N 2 )(η 2 ‐Tp)], 5 , respectively. Complexes 4 and 5 are characterized by X‐ray diffraction analyses.