Mono- and di-nuclear complexes of the ligands 3,4-di(2-pyridyl)-1,2,5-oxadiazole and 3,4-di(2-pyridyl)-1,2,5-thiadiazole; new bridges allowing unusually strong metal–metal interactions
Richardson, Chris, Steel, Peter J., D'alessandro, Deanna M., Junk, Peter C., and Keene, F. Richard (2002) Mono- and di-nuclear complexes of the ligands 3,4-di(2-pyridyl)-1,2,5-oxadiazole and 3,4-di(2-pyridyl)-1,2,5-thiadiazole; new bridges allowing unusually strong metal–metal interactions. Dalton Transactions, 2002 (13). pp. 2775-2785.
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View at Publisher Website: http://dx.doi.org/10.1039/b202954e
The syntheses of two new ligands, 3,4-di(2-pyridyl)-1,2,5-oxadiazole (dpo) and 3,4-di(2-pyridyl)-1,2,5-thiadiazole (dpt), are described. Complexes with palladium and copper have seven-membered chelate rings with coordination through the two pyridine nitrogens, whereas in the silver nitrate complex of dpt the ligand acts as a bridge between metal centres. Studies of the mononuclear ruthenium complexes indicate five-membered chelate rings (involving donor nitrogen atoms from each of a pyridine ring and the oxadiazole or thiadiazole ring) and reveal that these ligands are very electron deficient and possess very low energy * orbitals. Dinuclear ruthenium complexes have been prepared and the diastereoisomers separated and crystallographically characterised. Electrochemical studies of these complexes reveal remarkably strong metal–metal interactions, which also depend on the stereoisomeric form. Some heterodinuclear complexes have also been prepared.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||crystallography; inorganic chemistry; organic chemistry|
|FoR Codes:||03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl Structural) > 030606 Structural Chemistry and Spectroscopy @ 34%|
03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry @ 33%
03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030503 Organic Chemical Synthesis @ 33%
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%|
|Deposited On:||12 Jun 2009 14:31|
|Last Modified:||18 Oct 2013 00:36|
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