A new series of dinuclear Au(I) complexes linked by diethynylpyridine groups

A new series of dinuclear Au(I) complexes linked by diethynylpyridine groups

A series of novel digold complexes incorporating ethynyl pyridine derivatives as a spacer unit, [(R(3)P)Au(C[triple bond]C)X(C[triple bond]C)Au(PR(3))] (R = Ph, X = 2,5-pyridine (1); R = Cy (cyclohexane), X = 2,5-pyridine (2); R = Ph, X = 2,6-pyridine (3); R = Ph, X = 2,5'-bipyridine (4); R = P...

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Veröffentlicht in:Dalton transactions : an international journal of inorganic chemistry 2008-01 (12), p.1635-1646
Hauptverfasser: Li, Peiyi, Ahrens, Birte, Bond, Andrew D, Davies, John E, Koentjoro, Olivia F, Raithby, Paul R, Teat, Simon J
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container_end_page 1646
container_issue 12
container_start_page 1635
container_title Dalton transactions : an international journal of inorganic chemistry
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creator Li, Peiyi
Ahrens, Birte
Bond, Andrew D
Davies, John E
Koentjoro, Olivia F
Raithby, Paul R
Teat, Simon J
description A series of novel digold complexes incorporating ethynyl pyridine derivatives as a spacer unit, [(R(3)P)Au(C[triple bond]C)X(C[triple bond]C)Au(PR(3))] (R = Ph, X = 2,5-pyridine (1); R = Cy (cyclohexane), X = 2,5-pyridine (2); R = Ph, X = 2,6-pyridine (3); R = Ph, X = 2,5'-bipyridine (4); R = Ph, X = 2,6'-bipyridine (5)), has been synthesised. All the complexes have been characterised spectroscopically and the structures determined by single-crystal X-ray crystallography. The central (C[triple bond]C)(X)(C[triple bond]C) unit is essentially linear for complexes 1, 2 and 4 and kinked for complexes 3 and 5, but only in 1, with the shortest spacer group and the less bulky phosphine ligand, is there evidence of d(10)...d(10) Au...Au interactions (Au-Au 3.351(2) A). The solution UV/visible absorption and emission spectra for all the complexes are similar to those of the free ligands suggesting that the spectra are dominated by pi-pi* ligand-centred transitions and this is confirmed by DFT calculations.
doi_str_mv 10.1039/b716664h
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title A new series of dinuclear Au(I) complexes linked by diethynylpyridine groups
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