Abstract − Analytical Sciences, 19(6), 971 (2003).
Crystal Structure of Bromo(2,2':6',2''-terpyridine)(2-(phenylazo)-pyridine)-ruthenium(II) Tetrafluoroborate
Kanidtha HANSONGNERN,* Uraiwan SAETEAW,* Golam MOSTAFA,** Fen-Ling LIAO,*** and Tian-Huey LU**
*Department of Chemistry, Faculty of Science, Prince of Songkla University, Songkla 90112, Thailand
**Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 300, R. O. C.
***Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 300, R. O. C.
**Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 300, R. O. C.
***Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 300, R. O. C.
The title compound, C26H20N6BrRu(BF4), crystallizes in the centrosymmetric space group P21/n and consists of discrete complex units. The Ru(II) ion is octahedrally coordinated to one 2,2':6',2''-terpyridine (tpy), one 2-(phenylazo)pyridine (azpy) and a Br atom in trans-axial position at a distance of 2.547(5)Å. The shorter Ru-N (azo) distance (1.960(3)Å) than the Ru-N(py) distance (2.061(3)Å) signifies a strong π-backbonding, which leads to a longer, N=N (azo) bond (1.304(4)Å).
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