Syntheses, Structures, and Properties of Two‐Dimensional Honeycomb Networks from the Assembly of the Tripodal Ligand 2,4,6‐Tris[4‐(imidazol‐1‐ylmethyl)phenyl]‐1,3,5‐triazine with Metal Salts

Two novel coordination networks, [Zn 2 (timpt) 2 (μ‐OH)](NO 3 ) 3 ( 1 ) and [Ni 2 (timpt) 2 (H 2 O) 2 (SO 4 ) 2 ]·0.5H 2 O ( 2 ) were obtained by assembly of 2,4,6‐tris[4‐(imidazol‐1‐ylmethyl)phenyl]‐1,3,5‐triazine (timpt) with the corresponding metal salts. The X‐ray single‐crystal diffraction analysis reveals that complex 1 possesses μ‐OH‐bridged dinuclear zinc( II ) subunits (Zn 2 OH) and each timpt ligand connects three metal atoms to form a two‐dimensional (2D) honeycomb network structure, in which each independent sheet contains two sublayers. While in the case of complex 2 , the nickel( II ) atom is coordinated by N atoms of timpt, O atoms of sulfate anions and water molecules to give a 2D honeycomb network. The luminescence properties of timpt, 1 and 2 in the solid state were investigated at room temperature. The maximum emission wavelength of 1 is red‐shifted by 17 nm compared with that of timpt. While complex 2 showed an emission with remarkably reduced intensity under the same conditions. The results imply that the metal ions have great influence on the structure and properties of the complexes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)