Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Articles by Chen-Yu Yeh
Total Records ( 1 ) for Chen-Yu Yeh
  Cai-Xia Yin , Jing Su , Fang-Jun Huo , Rayyat-H. Ismayilov , Wen-Zhen Wang , Gene-Hsiang Lee , Chen-Yu Yeh and Shie-Ming Peng
  The synthesis, crystal structures, electrochemical, and magnetic properties of a linear pentanuclear Ni5 compound derived from an oligo-α-pyridylamino ligand, [Ni5(μ-dmpdda)4(NCS)2] [dmpdda-H2 = N,N'-di(4-methylpyridin-2-yl)pyridine-2,6-diamine], are reported. Ni5(μ-dmpdda)4(NCS)2 involve a Ni5 linear chain unit with all of the Ni-Ni-Ni angles being nearly 180°, terminated by two axial ligands. The pentanuclear linear metal chain is helically wrapped by four syn-syn-syn-syn type dmpdda2- ligands. There are two types of Ni-Ni distances in this complex. Terminal Ni-Ni distances bonded with the axial ligand are longer (2.377 Å); the inner Ni-Ni distances are short at 2.2968 Å. Terminal Ni(II) ions bonded with the axial ligands are square-pyramidal (NiN4NCS) with long Ni-N bonds (2.092 Å), consistent with a high-spin Ni(II) configuration. The inner three Ni(II) ions have short Ni-N (1.901-1.925 Å) bond distances, consistent with a square planar (NiN4), diamagnetic arrangement of a low-spin Ni(II) configuration. This compound exhibits magnetic behavior similar to [Ni5(μ-tpda)4(NCS)2], indicating an antiferromagnetic interaction of two terminal high-spin Ni(II) ions.
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility