Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - A modular approach to luminescent dinuclear ruthenium(II) and rhenium(I) complexes
AU - Pelleteret, Diane
AU - Fletcher, Nicholas C.
PY - 2008/8
Y1 - 2008/8
N2 - A series of dinuclear (bipyridine)tricarbonylrhenium(I) and tris(bipyridine) ruthenium(II) complexes have been isolated and characterised, bridged by a flexible diamido ethylene glycol chain. A new stepwise synthetic pathway has been investigated to heterometallic complexes, with the rhenium(I) complexes exhibiting an unusual configuration and inequivalence of the metal centres potentially arising from a surprising hydrogen-bonding interaction between an Re-CO group and an amide proton in low-polarity solvents. This interaction appears to be broken by competing hydrogen-bonding species such as dihydrogen phosphate. This effect was not observed in file corresponding ruthenium(II) complexes, which showed very little interaction with anions. The photophysical characterisation shows that the inclusion Of two ester/amide groups to the rhenium centre effectively quenches the fluorescence at. room temperature, The ruthenium(II) complexes have considerably stronger fluorescence than the rhenium species, and are less affected by the inclusion of ester and amide groups to the 2,2'-bipyridine chelating group, ((D Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheirn, Germany, 2008).
AB - A series of dinuclear (bipyridine)tricarbonylrhenium(I) and tris(bipyridine) ruthenium(II) complexes have been isolated and characterised, bridged by a flexible diamido ethylene glycol chain. A new stepwise synthetic pathway has been investigated to heterometallic complexes, with the rhenium(I) complexes exhibiting an unusual configuration and inequivalence of the metal centres potentially arising from a surprising hydrogen-bonding interaction between an Re-CO group and an amide proton in low-polarity solvents. This interaction appears to be broken by competing hydrogen-bonding species such as dihydrogen phosphate. This effect was not observed in file corresponding ruthenium(II) complexes, which showed very little interaction with anions. The photophysical characterisation shows that the inclusion Of two ester/amide groups to the rhenium centre effectively quenches the fluorescence at. room temperature, The ruthenium(II) complexes have considerably stronger fluorescence than the rhenium species, and are less affected by the inclusion of ester and amide groups to the 2,2'-bipyridine chelating group, ((D Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheirn, Germany, 2008).
KW - rhenium
KW - ruthenium
KW - 2,2'-bipyridine
KW - bridging ligands
KW - heterometallic complexes
KW - TRANSITION-METAL-COMPLEXES
KW - PHOTOCATALYTIC CO2 REDUCTION
KW - PHOTOINDUCED ENERGY-TRANSFER
KW - ELECTRON-TRANSFER PROCESSES
KW - LOWEST EXCITED-STATE
KW - PHOTOPHYSICAL PROPERTIES
KW - POLYPYRIDINE COMPLEXES
KW - TRICARBONYL COMPLEXES
KW - ANION-RECOGNITION
KW - PI-STACKING
U2 - 10.1002/ejic.200800251
DO - 10.1002/ejic.200800251
M3 - Journal article
VL - 2008
SP - 3597
EP - 3605
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
SN - 1434-1948
IS - 23
ER -