Asymmetric cleavage of 2,2′-pyridil to a picolinic acid anion radical coordinated to ruthenium(ii): splitting of water to hydrogen†
Abstract
The Ru(II)–H and water promoted asymmetric cleavage of 2,2′-pyridil to pyridine-2-carbaldehyde and unprecedented picolinic acid anion radical (PyCOOH−˙) complexes, which in solution produce H2 gas and diamagnetic picolinate complexes of ruthenium(II) in moderate yields, is reported.