85152-87-0Relevant academic research and scientific papers
C4H3SSeCH2CH2OC6 H5: Synthesis, characterization and reaction with palladium(II) and nickel(II)
Oilunkaniemi, Raija,Laitinen, Risto S.,Hannu-Kuure, Milja S.,Ahlgrén, Markku
, p. 95 - 101 (2007/10/03)
ThSeCH2CH2OPh (Th=2-thienyl, C4H3S-; Ph=phenyl) (2) has been prepared by the reaction of BrCH2CH2OPh (1) and ThSeLi. The compound was characterized by 13C{1H}- and 77Se-NMR spectroscopy and X-ray crystallography. 2 is monoclinic, space group P 21/c, a=10.865(2), b=5.152(1), c=41.996(8) ?, β=92.20(3)°. All bond lengths and angles are quite normal as exemplified by the respective Se-C(alkyl) and Se-C(aryl) bonds of 1.957(6)-1.966(6) and 1.901(7)-1.905(7) ?. The lattice is composed of discrete molecules that are joined together by weak hydrogen bonds into a three-dimensional network. Upon treating ThSeCH2CH2OPh with [PdCl2 (NCPh)2] and [NiCl2(PPh3)2] in benzene, a dinuclear palladium complex [Pd2Cl2 (μ-Cl)(μ-SeTh)(PPh3)2] (3) and a mononuclear complex [PdCl2(PPh3)2] (4) were formed together with a precipitation of NiCl2. The X-ray quality crystals were recrystallized in CH2Cl2. 3·2.5CH2Cl2 is monoclinic, space group C2/c, a=32.907(7), b=14.545(3), c=22.433(5) ?, β =114.37(3)° and contains a novel asymmetrical arrangement of one bridging chlorido and thienylselenolato ligand. Both palladium atoms show an square-planar coordination. The terminal Pd-Cl bond lengths are 2.388(1) and 2.346(1) ? with slightly longer distances of 2.418(1) and 2.450(1) ? involving the bridging chlorido ligand. The Pd-Se distances are 2.4092(9) and 2.4376(7) ?.
