Crescent-shaped dinuclear complexes: a dirhodium(II) complex of the new tetradentate ligand 2,7-bis(2-pyridyl)-1,8-naphthyridine (bpnp), (Rh/sub 2/(bpnp)(. mu. -CH/sub 3/CO/sub 2/)/sub 3/)(PF/sub 6/)
There is considerable interest in ligand systems that can coordinate two metal centers in close proximity. Such dinuclear complexes may show unusual properties and synergism between the two metals. Described here are the synthesis, spectral characterization, and structure of the first dinuclear complex of the tetradentate ligand 2,7-bis(2-pyridyl)-1,8-naphthyridine (bpnp). The title complex is a derivative of the extensively studied dirhodium(II) tetrakis(..mu..-carboxylates) and represents the first example of a LRh/sub 2/(O/sub 2/CR)/sub 3//sup +/ ion where L is a neutral bridging ligand. The electrochemistry of this complex is unusually rich, showing not only a reversible one-electron oxidation but also two reversible one-electron reductions in contrast to the tetracarboxylates that undergo irreversible reduction. The combination of the relatively rigid tetradentate ligand and the two metal atoms is crescent shaped (i.e., a ''croissant complex''), thus minimizing the steric effects on the metal centers in potential catalytic interactions with substrate molecules.
- Research Organization:
- Univ. of California, Santa Barbara
- OSTI ID:
- 5304159
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 22:7; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis, characterization, and x-ray molecular structures of mono- and dinuclear copper complexes with 2,7-bis(2-pyridyl)-1,8-naphthyridine
Chemistry of a cofacial dirhodium diporphyrin: Synthesis and reactivity of Rh[sub 2]DPB
Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400400 -- Electrochemistry
CHELATING AGENTS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
ELECTROCHEMISTRY
LIGANDS
OXIDATION
REDUCTION
RHODIUM COMPLEXES
STRUCTURAL CHEMICAL ANALYSIS
SYNERGISM
TRANSITION ELEMENT COMPLEXES