Disclosed are transition metal or group II metal ester polymers where the metal is an alkaline earth, transition metal or aluminum; methods of manufacture, and uses thereof. The metal ester polymers exhibit both high dielectric constant and low conductivity suitable for use as dielectric insulating materials.

A porous coordination polymer represented by the following formula (1), wherein, the ratio A/B of the diffraction peak intensity A of (001) plane to the diffraction peak intensity B of (110) plane is 0.8 or more and 5.8 or less,

Fe.sub.x(pz)[Ni.sub.1-yM.sub.y(CN).sub.4](1)

wherein, pz=pyrazine, 0.95x<1.05, M=Pd, Pt, 0y<0.15. The present invention also provides a gas detecting material and a lithium ion secondary battery having the porous coordination polymer.

A porous coordination polymer represented by the following formula (1), wherein, the ratio A/B of the diffraction peak intensity A of (001) plane to the diffraction peak intensity B of (110) plane is 0.8 or more and 5.8 or less,

Fe.sub.x(pz)[Ni.sub.1-yM.sub.y(CN).sub.4](1)

wherein, pz=pyrazine, 0.95x<1.05, M=Pd, Pt, 0y<0.15. The present invention also provides a gas detecting material and a lithium ion secondary battery having the porous coordination polymer.

The present invention relates to an organic/heterometallic hybrid polymer including a plurality of organic metal complexes and a plurality of transition metals, the organic/heterometallic hybrid polymer, wherein

the plurality of organic metal complexes are linked in a linear manner by sandwiching each of the plurality of transition metals therebetween,

the organic metal complexes include two ligands each having a terpyridyl group and one connector having Ru(dppe).sub.2 and two ethynylene groups, and the two ligands are linked by the connector, so that a nitrogen atom at position 1 of the terpyridyl group is directed toward the terminal side of the molecule of the organic metal complex, and

the terpyridyl groups of at least two different organic metal complexes of the plurality of organic metal complexes are bound to one of the transition metals through a coordinate bond, thereby linking the plurality of organic metal complexes while sandwiching the plurality of transition metals alternately therebetween.

The present invention relates to an organic/heterometallic hybrid polymer including a plurality of organic metal complexes and a plurality of transition metals, the organic/heterometallic hybrid polymer, wherein

the plurality of organic metal complexes are linked in a linear manner by sandwiching each of the plurality of transition metals therebetween,

the organic metal complexes include two ligands each having a terpyridyl group and one connector having Ru(dppe).sub.2 and two ethynylene groups, and the two ligands are linked by the connector, so that a nitrogen atom at position 1 of the terpyridyl group is directed toward the terminal side of the molecule of the organic metal complex, and

the terpyridyl groups of at least two different organic metal complexes of the plurality of organic metal complexes are bound to one of the transition metals through a coordinate bond, thereby linking the plurality of organic metal complexes while sandwiching the plurality of transition metals alternately therebetween.