title: Pseudo-polyrotaxane and beta-sheet layer-based three-dimensional coordination polymers constructed with silver salts and flexible pyridyl-type ligands.
abstract: A fascinating 3D pseudo-polyrotaxane architecture with 1D polymeric [Ag(bpp)](n) chains penetrating 2D (6,3) [Ag(2)(bpp)(2)(ox)](n) sheets and a 3D coordination network constructed with 2D infinite [Ag(ppa)](n) beta-sheetlike layers pillared by ox ligands (bpp = 1,3-bis(4-pyridyl)propane; ppa = N-(4-pyridinylmethyl)-4-pyridinecarboxamide; ox = oxalate) have been prepared by utilizing flexible pyridyl-type ligands and have been crystallographically characterized. Crystal data for 1: monoclinic, space group C2/c, a = 7.619(2) A, b = 19.781(4) A, c = 26.799(5) A, beta = 94.720(10) degrees, U = 4025.2(15) A(3), and Z = 4. Crystal data for 2: monoclinic, space group C2/c, a = 28.947(8) A, b = 8.617(3) A, c = 16.307(6) A, beta =121.07(1) degrees, U = 3484(2) A(3), and Z = 4.
authors.affiliation: State Key Laboratory of Optoelectronic Materials & Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China. cestml@zsu.edu.cn
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Tong
authors.forename: Yin-Miao
authors.initials: YM
authors.lastname: Wu
authors.forename: Jie
authors.initials: J
authors.lastname: Ru
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Chen
authors.forename: Ho-Chol
authors.initials: HC
authors.lastname: Chang
authors.forename: Susumu
authors.initials: S
authors.lastname: Kitagawa