Hydrothermal syntheses, structures and characterizations of two luminescent cadmium(II) complexes with p-xylenediphosphonic acid and N-donor ligands

• Published in: Journal of solid state chemistry Vol. 186; pp. 189 - 194
• Main Authors: Sun, Yan-Qiong, Hu, Jin, Zhang, Han-Hui, Chen, Yi-Ping
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 01.02.2012; Elsevier
• Subjects: AROMATICS; AZAARENES; AZINES; BIPYRIDINES; CADMIUM; CADMIUM COMPOUNDS; Cadmium diphosphonate; CADMIUM SULFATES; Channels; CHEMICAL ANALYSIS; COHERENT SCATTERING; COMPLEXES; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; CRYSTAL STRUCTURE; CRYSTALS; DIFFRACTION; ELEMENTS; EMISSION; Exact sciences and technology; GRAVIMETRIC ANALYSIS; HETEROCYCLIC COMPOUNDS; HYDROTHERMAL SYNTHESIS; Infrared radiation; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LIGANDS; LUMINESCENCE; Materials science; Materials synthesis; materials processing; MATHEMATICS; METALS; MONOCRYSTALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; Other materials; OXYGEN COMPOUNDS; PHENANTHROLINES; PHOSPHONATES; PHOTON EMISSION; Physics; PYRIDINES; QUANTITATIVE CHEMICAL ANALYSIS; Running; SCATTERING; Second ligand; Specific materials; SPECTROSCOPY; Structure; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; SULFATES; SULFUR COMPOUNDS; SYNTHESIS; THERMAL ANALYSIS; THERMAL GRAVIMETRIC ANALYSIS; Three dimensional; TOPOLOGY; X-RAY DIFFRACTION; X-rays; Cadmium diphosphonate; Hydrothermal synthesis; Second ligand; Structure; Cadmium; Cadmium complexes; Luminescence; Thermogravimetry; Bipyridines; Pillared structure; XRD; Infrared spectra; Hexagonal lattices; Cadmium sulfate; Optical properties; Phenanthrolines; Ligands; Donor center; Conformation
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2011.11.043

Two novel cadmium diphosphonates [Cd(cis-H4BDPP)(2,2′-bipy)2]·(trans-H2BDPP)]n (1) and [Cd(trans-H2BDPP)(phen)]n (2) (H4BDPP=p-xylenediphosphonic acid, phen=1,10-phenanthroline, 2,2′-bipy=2,2′-bipyridine) were hydrothermally synthesized from p-xylenediphosphonic acid and CdSO4·3H2O with phen or 2,2′-bipy as second ligand components and characterized by means of elemental analyses, IR, TG analysis, luminescence spectroscopy and single crystal X-ray diffraction. Compound 1 consists of a novel one-dimensional (1D) sinusoidal [Cd(cis-H4BDPP)(2,2′-bipy)2] chains and trans-H2BDPP anions. Compound 2 possesses a three-dimensional architecture built from double zigzag –Cd–O–P–O–Cd– chains pillared by trans-p-xylylenediphosphonate ligands from four different directions. There are hexagonal channels running along the c-axis and the coordinated phen ligands suspend in the hexagonal channels. The results indicate that p-xylenediphosphonic acid can adopt varied coordination modes and conformations in the formation of the complexes and the influence of the N-donor ligands on the structure of the complexes is discussed. Two new cadmium diphosphonates were obtained by using two different auxiliary ligands. The influence of the N-donor ligands on the structure of the complexes is discussed. [Display omitted] ► The first example of cadmium(II)-p-xylenediphosphonates templated by second ligand. ► The role of size of the auxiliary ligand on the structure of cadmium p-xylenediphosphonates. ► The cis and trans configurations of p-xylenediphosphonates exist in the same crystal structure. ► Three-dimensional 4-connected framework with PtS network topology.