Hansongnern K, Saeteaw U, Cheng J, Liao FL, Lu TH. (Nitro-kappaN)[2-(phenyldiazenyl-kappaN2)-pyridine-kappaN](2,2':6',2''-terpyridine-kappa3N)ruthenium(II) tetrafluoroborate.
Acta Crystallogr C 2001;
57:895-6. [PMID:
11498604 DOI:
10.1107/s0108270101007715]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2001] [Accepted: 05/09/2001] [Indexed: 11/11/2022] Open
Abstract
The Ru-N bond distances in the title complex, [Ru(NO(2))(C(11)H(9)N(3))(C(15)H(11)N(3))]BF(4) or [Ru(NO(2))(tpy)(azpy)]BF(4), [tpy is 2,2':6',2"-terpyridine and azpy is 2-(phenylazo)pyridine], are Ru-N(py) 2.063 (4), Ru-N(azo) 2.036 (4), Ru-N(nitro) 2.066 (3) A, and Ru-N(tpy) 2.082 (4), 1.982 (3) and 2.074 (4) A. The azo N atom is trans to the nitro group. The azo N=N bond length is 1.265 (5) A, which is the shortest found in such complexes to date. This indicates a multiple bond between Ru and the N atom of the nitro group, and pi-backbonding [dpi(Ru) --> pi*(azo)] is decreased.
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