The crystal structures of two coordination polymers [Ln(IN)3(H2O)2]n (Ln = Nd 1, Gd 2; IN = isonicotinate) were determined by single-crystal X-ray diffraction and further chara- cterized by IR, elemental analysis and ...The crystal structures of two coordination polymers [Ln(IN)3(H2O)2]n (Ln = Nd 1, Gd 2; IN = isonicotinate) were determined by single-crystal X-ray diffraction and further chara- cterized by IR, elemental analysis and thermogravimetric analysis. Crystal data for 1: monoclinic, space group P21/c, a = 9.6636(5), b = 19.7532(10), c = 11.6183(6) ?, β = 112.032(1)°, V = 2055.83(18) ?3, Z = 4, Dc = 1.766 g/cm3, F(000) = 1076, μ = 2.575 mm–1 and R = 0.0493; Crystal data for 2: monoclinic, space group C2/c, a = 20.251(2), b = 11.6199(11), c = 9.8240(9) ?, β = 115.505(3)°, V = 2086.4(3) ?3, Z = 4, Dc = 1.781 g/cm3, F(000) = 1092, μ = 3.228 mm–1 and R = 0.0695. In the title compounds, the center atoms Ln(III) are in a distorted square antiprismatic geometry and linked by bridging isonicotinate to form an infinite chain. The intermolecular hydro- gen bonds lead to the formation of three-dimensional supramolecular structures.展开更多
基金This work was supported by the NNSF of China (Nos. 20271050 and 20473093), the Talents Program of the Chinese Academy of Sciences and NSF of Fujian Province (Nos. E0510030 and E0210029)
文摘The crystal structures of two coordination polymers [Ln(IN)3(H2O)2]n (Ln = Nd 1, Gd 2; IN = isonicotinate) were determined by single-crystal X-ray diffraction and further chara- cterized by IR, elemental analysis and thermogravimetric analysis. Crystal data for 1: monoclinic, space group P21/c, a = 9.6636(5), b = 19.7532(10), c = 11.6183(6) ?, β = 112.032(1)°, V = 2055.83(18) ?3, Z = 4, Dc = 1.766 g/cm3, F(000) = 1076, μ = 2.575 mm–1 and R = 0.0493; Crystal data for 2: monoclinic, space group C2/c, a = 20.251(2), b = 11.6199(11), c = 9.8240(9) ?, β = 115.505(3)°, V = 2086.4(3) ?3, Z = 4, Dc = 1.781 g/cm3, F(000) = 1092, μ = 3.228 mm–1 and R = 0.0695. In the title compounds, the center atoms Ln(III) are in a distorted square antiprismatic geometry and linked by bridging isonicotinate to form an infinite chain. The intermolecular hydro- gen bonds lead to the formation of three-dimensional supramolecular structures.
