Photochemistry of [Ru3(CO)12] with nitrogen heterocycles

Nicholas E. Leadbeater; Jack Lewis; Paul R. Raithby; Gregory N. Ward

doi:10.1039/a702099f

Photochemistry of [Ru₃(CO)₁₂] with nitrogen heterocycles

Nicholas E. Leadbeater, Jack Lewis, Paul R. Raithby, Gregory N. Ward

Durham University

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27 Citations (SciVal)

Abstract

The photochemistry of [M₃(CO)₁₂] (M = Ru 1a or Os 1b) with nitrogen heterocycles has been studied. In all cases photolysis leads to photosubstitution products, the heterocycles inhibiting the photofragmentation pathway. With pyridine (py) 1a formed the orthometallated complex [Ru₃H(CO)₁₀(C₅H₄N)] 2a. With osmium, the simple substitution product [Os₃(CO)₁₁(py)] 3b can be isolated. With 2-methylpyridine (mpy) [Ru₃H(CO)₁₀(2-MeC₅H₃N)] 5a and [Os₃(CO)₁₁(mpy)] 6b were formed from 1a and 1b respectively. With 2,6-dimethylpyridine no net photoreaction was observed. Photolysis of 1a and 1b with 2,2′-bipyridine led to the formation of [M₃(CO)₁₀(bipy)] (M = Ru 7a and Os 7b). The molecular structure of 7b has been obtained by single-crystal X-ray diffraction studies. Photolysis of 1a and 1b with pyridazine (pydz) led to the substituted products [M₃(CO)₁₀(pydz)] (M = Ru 8a or Os 8b).

Original language	English
Pages (from-to)	2511-2516
Number of pages	6
Journal	Journal of the Chemical Society - Dalton Transactions
Volume	1997
Issue number	14
DOIs	https://doi.org/10.1039/a702099f
Publication status	Published - 21 Jul 1997

ASJC Scopus subject areas

General Chemistry

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title = "Photochemistry of [Ru3(CO)12] with nitrogen heterocycles",

abstract = "The photochemistry of [M3(CO)12] (M = Ru 1a or Os 1b) with nitrogen heterocycles has been studied. In all cases photolysis leads to photosubstitution products, the heterocycles inhibiting the photofragmentation pathway. With pyridine (py) 1a formed the orthometallated complex [Ru3H(CO)10(C5H4N)] 2a. With osmium, the simple substitution product [Os3(CO)11(py)] 3b can be isolated. With 2-methylpyridine (mpy) [Ru3H(CO)10(2-MeC5H3N)] 5a and [Os3(CO)11(mpy)] 6b were formed from 1a and 1b respectively. With 2,6-dimethylpyridine no net photoreaction was observed. Photolysis of 1a and 1b with 2,2′-bipyridine led to the formation of [M3(CO)10(bipy)] (M = Ru 7a and Os 7b). The molecular structure of 7b has been obtained by single-crystal X-ray diffraction studies. Photolysis of 1a and 1b with pyridazine (pydz) led to the substituted products [M3(CO)10(pydz)] (M = Ru 8a or Os 8b).",

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N2 - The photochemistry of [M3(CO)12] (M = Ru 1a or Os 1b) with nitrogen heterocycles has been studied. In all cases photolysis leads to photosubstitution products, the heterocycles inhibiting the photofragmentation pathway. With pyridine (py) 1a formed the orthometallated complex [Ru3H(CO)10(C5H4N)] 2a. With osmium, the simple substitution product [Os3(CO)11(py)] 3b can be isolated. With 2-methylpyridine (mpy) [Ru3H(CO)10(2-MeC5H3N)] 5a and [Os3(CO)11(mpy)] 6b were formed from 1a and 1b respectively. With 2,6-dimethylpyridine no net photoreaction was observed. Photolysis of 1a and 1b with 2,2′-bipyridine led to the formation of [M3(CO)10(bipy)] (M = Ru 7a and Os 7b). The molecular structure of 7b has been obtained by single-crystal X-ray diffraction studies. Photolysis of 1a and 1b with pyridazine (pydz) led to the substituted products [M3(CO)10(pydz)] (M = Ru 8a or Os 8b).

AB - The photochemistry of [M3(CO)12] (M = Ru 1a or Os 1b) with nitrogen heterocycles has been studied. In all cases photolysis leads to photosubstitution products, the heterocycles inhibiting the photofragmentation pathway. With pyridine (py) 1a formed the orthometallated complex [Ru3H(CO)10(C5H4N)] 2a. With osmium, the simple substitution product [Os3(CO)11(py)] 3b can be isolated. With 2-methylpyridine (mpy) [Ru3H(CO)10(2-MeC5H3N)] 5a and [Os3(CO)11(mpy)] 6b were formed from 1a and 1b respectively. With 2,6-dimethylpyridine no net photoreaction was observed. Photolysis of 1a and 1b with 2,2′-bipyridine led to the formation of [M3(CO)10(bipy)] (M = Ru 7a and Os 7b). The molecular structure of 7b has been obtained by single-crystal X-ray diffraction studies. Photolysis of 1a and 1b with pyridazine (pydz) led to the substituted products [M3(CO)10(pydz)] (M = Ru 8a or Os 8b).

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Photochemistry of [Ru₃(CO)₁₂] with nitrogen heterocycles

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