Abstract
New cationic complexes [Ru(η 5-C 5H 5)(EPh 3)(L)]BF 4 [L = pyridine-2-carbaldehyde azine (paa); E = P, 1; E = As, 2; E = Sb, 3] and κ 1 bonded dppm complexes [Ru(η 5-C 5H 5)(κ 1-dppm)(L)]BF 4 [L = paa 4; L = p-phenylene-bis(picoline)aldimine (pbp) 5] containing both group V donor and pyridyl–azine ligand are reported. The complexes were fully characterized by analytical and spectral studies. 31P NMR spectral studies suggested coordination of dppm in the complexes 4 and 5 in κ 1-manner, which was further, confirmed by structural studies on the representative complex 4. Weak interaction studies revealed that inter- and intramolecular C–H⋯X (X = O, F, Cl, π) and π–π interactions in the complexes 1 and 4 lead to helical structures.
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