1628472-07-0Relevant academic research and scientific papers
The synthesis of dimeric ReI-phenylenediimine conjugates: Spectroscopic and electrochemical studies
Hasheminasab, Abed,Engle, James T.,Bass, Jacob,Herrick, Richard S.,Ziegler, Christopher J.
, p. 2643 - 2652 (2014)
A series of dimeric ReI(CO)3 compounds have been prepared by means of a one-pot reaction of [Re(CO)5X] (X = Cl, Br), pyridine-2-carboxyaldehyde, and o-, m-, or p-phenylenediamine. For the m- and p-substituted phenylenediamine reactions, phenyl-bridged bis(pyridine-2- carbaldimine) compounds of the formula [Re(CO)3X]2(μ- PPC) [3-7; X = Cl, Br; μ-PPC = m- or p-phenylene bis(pyridine-2-carbaldimine) ] were produced, with m-phenylenediamine forming a mixture of isomers. For reactions with o-phenylenediamine, multiple products formed (compounds 8-11), which ranged from the desired o-phenylene bis(pyridine-2-carbaldimine) adduct to 2-pyridylbenzimidazole and bridging dipyridinylquinoxaline complexes. An example of each complex was structurally elucidated by single-crystal X-ray methods. The dimeric m- and p-phenylene-bridged Re(CO)3X compounds, including a sulfonate derivative designed to improve solubility, were investigated for possible photophysical applications through the use of UV/Vis spectroscopy and cyclic voltammetry; the study revealed coupling between the rhenium centers.
