141997-67-3Relevant academic research and scientific papers
Transition-Metal Complexes with Sulfur Ligands, LXXXV. 'buS4-C2')>3, a New Type of Trinuclear Ni Complexes ('buS4-C2' = 1,2-Bis(3,5-ditertiarybutyl-2-mercaptophenylthio)ethane(2-))
Sellmann, D.,Schillinger, H.,Knoch, F.
, p. 645 - 655 (2007/10/02)
Key Words: Nickel-Sulfur Complexes, Phosphine Ligands, X-Ray Ni(II) salts and the tetradentate thioether-thiolate ligand 'S4-C2'(2-) (= 1,2-bis(2-mercaptophenylthio)ethane(2-)) yield x (1), that also forms when Na2 ('S2'(2-) = o-benzenedithiolate(2-)) is alkylated by 1,2-dibromoethane.In boiling pyridine 1 adds two solvent molecules and gives pseudooctahedral (2) which was characterized by X-ray structure determination.Reaction of 1 with PMe3 yields (4).X-ray structure determination of 4 showed that the Ni center is surrounded by one P and four S atoms in a distorted tetragonal pyramid in which the P atom, one thioether S atom and both of the thiolate S atoms form the base while the second thioether S atom occupies the apical position.Reaction of 1 with n-BuLi leads to removal of the C2H4 bridge of the 'S4-C2'(2-) ligand and formation of Li2. When 3 is reacted with 'buS4-C2'(2-) (=1,2-bis-(3,5-ditertiarybutyl-2-mercaptophenylthio)ethane(2-)) which is analogous to 'S4-C2'(2-), the trinuclear 'buS4-C2')>3 (3) forms. 3*THF was characterized by X-ray structure determination.It contains one tetrahedrally distorted and two planar cores that are connected via the C2H4 groups of the ligands such that a macrocycle forms.PMe3 cleaves 3 to give mononuclear 'buS4-C2')> (5).Due to its lability, it was characterized only by spectroscopic methods.
