Syntheses, crystal structures and fluorescent properties of four one-dimensional lanthanide coordination polymers with 3-cyanobenzoato

• Published in: Journal of coordination chemistry Vol. 59; no. 18; pp. 2075 - 2081
• Main Authors: Chen, Zhen-Feng, Yu, Liang-Cai, Liu, Yan-Cheng, Liang, Hong, Zhou, Chun-Shan, Li, Yan
• Format: Journal Article
• Language: English
• Published: Taylor & Francis Group 15.12.2006
• Subjects: 3-Cyanobenzoato; Crystal structure; Fluorescence; Lanthanide complexes
• ISSN: 0095-8972; 1029-0389
• DOI: 10.1080/00958970600742783

The hydrothermal reactions of Nd(ClO 4 ) 3 ·6H 2 O, Gd(ClO 4 ) 3 ·6H 2 O, Dy(ClO 4 ) 3 ·6H 2 O, Er(ClO 4 ) 3 ·6H 2 O with 1,3-dicyanobenzene, give rise to four one-dimensional rare earth-based coordination polymers: [M(3-CNC 6 H 4 COO) 3 (H 2 O) 2 ] n (where M = Nd (1), Gd (2), Dy (3), Er (4), 3-CNC 6 H 4 COO = 3-cyanobenzoato), respectively. Their solid-state structures have been characterized by X-ray single-crystal diffraction studies. The results show that 1,3-dicyanobenzene hydrolyzed to give 3-cyanobenzoato under hydrothermal condition, and the four complexes are isomorphous. Crystal data for 1: triclinic, space group P-1, a = 9.4063(19), b = 11.485(2), c = 12.616(3) Å, α = 66.38(3), β = 74.01(3), γ = 86.96(3)°, V = 1197.9(4) Å 3 , Z = 1, D c  = 1.704 Mg m −3 ; for 2: triclinic, space group P-1, a = 9.3712(19), b = 11.446(2), c = 12.627(3) Å, α = 65.86(3), β = 73.89(3), γ = 86.84(3)°, V = 1184.8(4) Å 3 , Z = 1, D c  = 1.759 Mg m −3 ; for 3: triclinic, space group P-1, a = 9.3425(19), b = 11.432(2), c = 12.703(3) Å, α = 65.28(3), β = 73.80(3), γ = 86.86(3)°, V = 1180.6(4) Å 3 , Z = 1, D c  = 1.780 Mg m −3 ; for 4: triclinic, space group P-1, a = 9.3425(19), b = 11.432(2), c = 12.703(3) Å, α = 65.28(3), β = 73.80(3), γ = 86.86(3)°, V = 1180.6(4) Å 3 , Z = 1, D c  = 1.7794 Mg m −3 . The fluorescence emission spectra of compounds 1 to 4 are also reported.