Key points are not available for this paper at this time.
Square-planar and octahedral complexes of NiII and PtII link through head-to-head hydrogen bonds to form porous frameworks with large cavities that are suitable for inclusion of guest molecules. A series of four different complexes with pyridine-based ligands (in the center of the picture) are described, which contain either counterions or small molecules in channels. A=hydrogen-bond acceptor, D=hydrogen-bond donor, M=metal ion.
Aakeröy et al. (Mon,) studied this question.