TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Complex: The polymeric complex contains the aromatic compound having 2 or more coordinating regions as ligand, a non-coordinating aromatic compound, and metal ion as central metal. The three-dimensional lattice has a laminate structure formed by inserting the non-coordinating aromatic compound between aromatic-compound ligands. The aromatic-compound ligand is coordinated with central metal ion. Selective capture and/or selective release of the guest component is possible. The three-dimensional network structure is complex three-dimensional network structure of 2 or more independent conjugates. The complex conjugated three-dimensional network structure is mutual penetration structure. The pore groups differ in size of pore, shape of pore, and the atmosphere in pore. The atmosphere in a pore differs when occupancy ratio of the area where plane of a pore inner wall is exposed, and the area in which hydrogen atom is exposed differs. The pore has long, slender channel shape. The diameter of the inscribed circle of pore in a surface parallel to a crystal plane perpendicular with respect to the direction in which the pore contained in the pore group extends is 2-70degreesA, preferably 4.5-7.0degreesA. The length of the inscribed ellipse of pore in a surface parallel to a crystal plane perpendicular with respect to the direction in which the pore contained in the pore group extends is 5-70degreesA, preferably 6.0-8.0degreesA. The breadth of the inscribed ellipse is 2-50degreesA.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The non-coordinating aromatic compound is a condensed polycyclic aromatic compound of formula: Ar-(X-Y)n.Ar=structure having aromatic ringX=divalent organic group or single bond which connects Ar and Y directly;Y=atom group which contains coordination atom or coordination atom;andn=3-6.The aromatic compound is tris (4-pyridyl) triazine. The condensed polycyclic aromatic compound is triphenylene and/or perylene.