Pischedda, Sara published the artcileSynthesis and characterization of new Pd(II) and Pt(II) complexes with 3-substituted 1-(2-pyridyl)imidazo[1,5-a]pyridine ligands, Quality Control of 91-02-1, the publication is Dalton Transactions (2021), 50(14), 4859-4873, database is CAplus and MEDLINE.
Several palladium(II) and platinum(II) complexes (1–20) of general formula [M(Ln)(X)(Y)] [M = Pd, X = Y = Cl (1–Cl–4–Cl), X = Y = OAc (1–OAc–4–OAc); M = Pt: X = Y = Cl (5–8); M = Pd, X = Cl, Y = CH3 (9–12); M = Pt, X = Cl, Y = CH3 (13–16) or X = Y = CH3 (17–20); n = 1-4] have been synthesized by reaction of different Pd(II) and Pt(II) derivatives with various 3-substituted 1-(2-pyridyl)-imidazo[1,5-a]pyridines; i.e. Ln = 1-(2-pyridyl)-3-arylimidazo[1,5-a]pyridine (aryl = Ph, L1; 2-o-Tolyl, L2; Mesityl, L3) and 1-(2-pyridyl)-3-benzylimidazo[1,5-a]pyridine (L4). Detailed spectroscopic investigation (including IR, mono- and bi-dimensional 1H NMR) and elemental anal. has been performed for all these species, allowing their complete characterization. Ln act as N,N-bidentate ligands and coordinate the metal centers in a chelate fashion through the pyridyl (Npy) and the pyridine-like nitrogen atom of the imidazo[1,5-a]pyridine group (Nim). The x-ray structural anal. performed on two of Pd(II) and three Pt(II) complexes, namely [Pd(L2)(CH3)Cl] (10), [Pd(L3)(CH3)Cl] (11) and [Pt(L1)Cl2] (5), [Pt(L4)Cl2] (8), [Pt(L2)(CH3)Cl] (14) confirmed the spectroscopic and anal. data. Finally DFT studies unveiled the structural reasons behind the inertia of the synthesized compounds toward metalation, identified as the higher angle steric strain in comparison with the analogous bipyridine complexes.
Dalton Transactions published new progress about 91-02-1. 91-02-1 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene,Ketone, name is Phenyl(pyridin-2-yl)methanone, and the molecular formula is C12H9NO, Quality Control of 91-02-1.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem