Hydrogen Bonding Network of 4‐Amidiniumpyridine Acetate and PtIIbis(triphenylphosphine) Complexes with 4‐Amidine­pyridine

The X-ray structures of 4-amidiniumpyridine acetate, (1 center dot H)AcO, and of cis-[Pt(1)(2)(PPh3)(2)](NO3)(2) (2), as well as their IR spectra, reveal intramolecular hydrogen bonding, which held together the cations and the anions. The IR spectroscopic data suggest that this may be so also in cis-[PtCl(1)(PPh3)(2)](BF4) (3). In (1 center dot H)AcO and in 2 extensive intermolecular hydrogen bonding networks span through the whole crystals.