Syntheses, crystal structures and fluorescence emission of one-dimensional and mononuclear complexes generated from zinc(II) and carbamyldicyanomethanide

• Published in: Polyhedron 2003-02, Vol.22 (4), p.493-498
• Main Authors: Shi, Jing-Min, Yin, Hai-Liang, Wu, Chang-Ju, Liu, Feng-Ling, Xu, Wen
• Format: Article
• Language: English
• Subjects: Crystal structures; Fluorescence; Polynitrile ligands; Syntheses; Zinc complexes
• ISSN: 0277-5387
• DOI: 10.1016/S0277-5387(02)01378-5

A one-dimensional chain complex {[Zn( cda) 2(CH 3OH) 2]·4CH 3OH} ∞ ( cda=carbamyldicyanomethanide anion) ( 1) and a mononuclear complex [Zn( cda) 2(H 2O) 4]·2H 2O ( 2) have been synthesized and their crystal structures determined by X-ray crystallography. The zinc(II) ion in 1 is bridged by double μ 1,5- cda bridging ligands and the uncoordinated methanol molecules are trapped in the cavities. Compound 2 is a mononuclear complex and the zinc(II) ion is coordinated by two nitrile-nitrogen atoms and four aqua ligands. The complexes show fluorescence both in the solid state and in solution. A novel one-dimensional chain complex {[Zn( cda) 2(CH 3OH) 2]·4CH 3OH} ∞ and a new mononuclear complex [Zn( cda) 2(H 2O) 4]·2H 2O have been synthesized with the polynitrile ligand carbamyldicyanomethanide. The two complexes exhibit fluorescent emission property both in the solid state and in solution.