Xue Nie

Hydrothermal Synthesis, Crystal Structure, and Luminescence Property of an Mn-Tb Complex Based on 5-(isonicotinamido)-isophthalate

A 3d-4f heterometallic coordination polymer, [Mn0.5Tb (INAIP)2(H2O)2]·2H2O (1) has been prepared by hydrothermal reactions of the corresponding lanthanide salt with 5-(isonicotinamido)isophthalic acid (H2INAIP) in the presence of MnSO4·H2O and NaOH. X-ray single-crystal structural analysis reveals that 1 features non-interpenetrated three-dimensional (3D) coordination framework containing two-dimensional (2D) (4, 4) Tb-carboxylate layers. In addition, 1 also displayed photoluminescent properties in the green range at room temperature.

Syntheses, crystal structures and properties of two nickel(II) coordination polymers constructed from 5-(isonicotinamido)isophthalic acid

Two Ni(II) metal–organic frameworks, [Ni(INAIP)(DMF)]·0.5DMF and [Ni(INAIP)(H2O)]·2H2O, have been synthesized by the reaction of 5-(isonicotinamido)isophthalic acid (H2INAIP) with NiSO4·6H2O using different reaction solvents. Single-crystal X-ray diffraction analysis indicates that [Ni(INAIP)(DMF)]·0.5DMF has a twofold interpenetrated three-dimensional (3D) framework with sra topology, while [Ni(INAIP)(H2O)]·2H2O has a two-dimensional (2D) network structure with a 4-connected (43·63) topology. In addition, the magnetic and adsorption properties of the complexes were explored.

Poly[[aqua­[μ5-5-(isonicotinamido)­isophthalato][μ4-5-(isonicotinamido)­isophthalato]holmium(III)silver(I)] dihydrate]

The title heteronuclear complex, {[AgHo(C14H8N2O5)2(H2O)]·2H2O}n, has a three-dimensional polymeric structure, generated by the carboxylate and pyridine groups of the 5-(isonicotinamido)isophthalate (INAIP) ligands bridging the metal atoms. The HoIII atom is coordinated by seven O atoms from INAIP ligands and a water molecule in a distorted square-antiprismatic geometry, while the AgI atom has a distorted trigonal-planar AgN2O geometry. Intermolecular O—H⋯O and N—H⋯O hydrogen bonds stabilize the crystal structure.

Poly[[diaqua­[μ2-3-carb­oxy-5-(pyridine-4-carboxamido)­benzoato][μ4-5-(pyridine-4-carboxamido)­isophthalato]cerium(III)] monohydrate]

In the title compound, {[Ce(C14H9N2O5)(C14H8N2O5)(H2O)2]·H2O}n, three carboxyl groups of two independent isophthalate anions are deprotonated and they bridge the CeIII cations, forming a two-dimensional polymeric structure parallel to (001); another carboxyl group is not deprotonated and links with the adjacent pyridine ring via an O—H⋯N hydrogen bond. The CeIII cation is coordinated by six O atoms from carboxyl groups and two O atoms from coordinated water molecules in a distorted square-antiprismatic arrangement. Extensive O—H⋯O and O—H⋯N hydrogen bonding occurs in the crystal structure.

Aqua-(2,2'-bipyridine-κ(2)N,N'){(E)-[(5-chloro-2-oxidobenzyl-idene)amino-κ(2)N,O]methane-sulfonato-κO}zinc.

In the title compound, [Zn(C8H6ClNO4S)(C10H8N2)(H2O)], the ZnII atom is six-coordinated by two O atoms and one N atom from a tridentate Schiff base ligand and two N atoms from a chelating 2,2′-bipyridine ligand and one water molecule, forming a slightly distorted octahedral geometry. In the crystal, O—H⋯O hydrogen bonds link pairs of complex molecules into dimers. An intramolecular O—H⋯O hydrogen bond is also present.

Poly[[tetra­aqua­tetra­kis­[μ3-5-(pyridine-4-carboxamido)­isophthalato]nickel(II)diterbium(III)] tetra­hydrate]

In the title compound, {[NiTb2(C14H8N2O5)4(H2O)4]·4H2O}n, the TbIII ion is coordinated by one water molecule and seven O atoms from four 5-(pyridine-4-carboxamido)isophthalate (L) ligands in a distorted square-antiprismatic arrangement, while the NiII ion, lying on an inversion center, is six-coordinated in an octahedral geometry by two pyridine N atoms, two carboxylate O atoms and two water molecules. One L ligand bridges two TbIII ions and one NiII ion through two carboxylate groups and one pyridine N atom. The other L ligand bridges two TbIII ions and one NiII ion through two carboxylate groups, while the uncoordinating pyridine N atom is hydrogen bonded to an adjacent coordinating water molecule. Extensive O—H⋯O, N—H⋯O and O—H⋯N hydrogen bonds play an important role in stabilizing the crystal structure.

Crystal structure of bis[diaquaisonicotinatosamarium(III)]-μ- isonicotinato-[diisonicotinatocopper(II)], CuSm2(C6H4NO2)8(H2O)4

C48H40CuN8O20Sm2, monoclinic, P21/n (no. 14), a = 9.5218(9) Å, b = 15.037(1) Å, c = 18.285(2) Å, * = 93.822(1)°, V = 2612.2 Å, Z = 2, Rgt(F) = 0.021, wRref(F ) = 0.049, T = 293 K. Source of material A mixture of CuO (1.0 mmol, 0.082 g), Sm2O3 (0.5 mmol, 0.180.g), isonicotinic acid (2.0 mmol, 0.248 g), H2O (10 mL, 0.55.mmol) and two drops of acetic acid, with the pH value of about 2.0, was sealed in a 25 ml capacity Teflon-lined reaction vessel at 160 °C for 5 days, the reaction mixture was cooled to room temperature over a period of 48 h. The product was collected by filtration, washed with H2O and air-dried. Blue blockshaped crystals suitable for X-ray analysis were obtained. Experimental details H atoms bonded to C atoms were placed geometrically and treated as riding, with d(C—H) = 0.93 Å and Uiso(H) = 1.2 Ueq(C). The water H atoms found from difference Fourier maps were included in the refinements with restraints for d(O—H) = 0.829 0.833 Å and Uiso(H) = 1.5 Ueq(O). Discussion In the past few years, more extensive attention had been paid to the research on the chemistry of the heterometallic lanthanidetransition metal complexes [1-3]. Isonicotinic acid is a good linear bridging ligand with oxygen and nitrogen donors on opposite sides. In the crystal of the title compound, the Cu center is fourcoordinated by two O atoms from two different isonicotinate anions, two N atoms from the other two isonicotinate molecules. Thus the Cu ion has a distorted square coordination. The Sm center is eight-coordinated by six O atoms from five different isonicotinate anion and two O atoms from two water molecules. So the Sm ion has a square antiprismatic environment. The adjacent Cu-Sm centers are bridged by the tridentate isonicotinate ligands, forming a one-dimensional chain structure. The water molecules are hydrogen bonded to the N atoms of the pyridyl groups of the ligands, which link the complex into a threedimensional framework. 616 Z. Kristallogr. NCS 224 (2009) 616-618 / DOI 10.1524/ncrs.2009.0271