Binuclear organometallic ruthenium complexes of a Schiff base expanded porphyrin

2008 ◽  
pp. 3744 ◽  
Author(s):  
Luciano Cuesta ◽  
Elisa Tomat ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Ruthenium Complexes ◽  
Expanded Porphyrin

Synthesis and molecular structure of di- and mono-nuclear Schiff-base phenolate complexes: facile formation of cyclometallated ruthenium complexes

1997 ◽  
pp. 1697-1704 ◽  
Author(s):  
Halikhedkar Aneetha ◽  
Chepuri R. K. Rao ◽  
Kollipara Mohan Rao ◽  
Panthappally S. Zacharias ◽  
Xue Feng ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Schiff Base ◽  
Ruthenium Complexes

Syntheses and structural studies of η5-pentamethylcyclopentadienyl rhodium(III) and iridium(III) complexes of a Schiff-base expanded porphyrin

2010 ◽  
Vol 14 (01) ◽  
pp. 41-46 ◽  
Author(s):  
Luciano Cuesta ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Intramolecular Hydrogen Bonding ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
Coordination Environment ◽  
Metal Centers ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Intramolecular Hydrogen ◽  
Expanded Porphyrin

Reported here is the synthesis of new binuclear rhodium(III) and iridium(III) semi-sandwich complexes of a Schiff-base expanded porphyrin. Single crystals of these new complexes were subject to X-ray diffraction analysis. The resulting structures revealed that the Schiff-base macrocycle adopts a V-shape in which two {(η5- C 5 Me 5) MCl } ( M = Rh and Ir ) fragments are accommodated within the macrocyclic pocket. The coordination environment of the metal centers is typical to that of "piano stool"-type complexes. The X-ray analyses and complementary NMR studies (carried out in CD 2 Cl 2) provide evidence for the existence of strong intramolecular hydrogen-bonding interactions between the pyrrolic NH protons and the chloride counteranion both in solution and in the solid state.

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