Bis(pentamethylene)urea complexes of the lanthanide nitrates: synthesis, characterization, properties

• Published in: Journal of solid state chemistry Vol. 171; no. 1-2; pp. 242 - 245
• Main Authors: de Souza, H.K.S., Pedrosa, A.M.Garrido, Marinho, E.P., Batista, M.K.S., Melo, D.M.Araújo, Zinner, K., Zinner, L.B., Zukerman-Schpector, J., Vicentini, G.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: San Diego, CA Elsevier Inc 15.02.2003; Elsevier
• Subjects: Bis(pentamethylene)urea; Chemistry; Condensed matter: structure, mechanical and thermal properties; Coordination compounds; Exact sciences and technology; Inorganic chemistry and origins of life; Inorganic compounds; Lanthanide; Metal complexes; Nitrates; Physics; Preparations and properties; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Lanthanide; Nitrates; Bis(pentamethylene)urea; Molecular structure; Nitrogen heterocycle; Rare earth metal complex; Nitrato complex; Organic ligand; Experimental study; X ray diffraction; Emission spectrum; Absorption spectrum; Inorganic compound; TGA; Thermal properties; Optical properties; Six membered ring; Chemical preparation; Ureas; Infrared spectrum; Lanthanide Complexes; Crystalline structure
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/S0022-4596(02)00159-7

Lanthanide nitrate complexes of bis(pentamethylene)urea (BPMU) with general formula Ln(NO3)33BPMU, where Ln: La, Nd, Sm, Eu, Ho and Er have been prepared and characterized based on CHN elemental analyses, lanthanide titration with EDTA, molar conductivity, spectroscopic data and thermal studies. The infrared spectra show that ligands (BPMU) are bonded through the carbonyl oxygen, nitrate counter-ions are bidentate linked to the central ions. The structure of the neodymium complex was determined. The crystal is monoclinic, P21/c,Z=4, with the following parameters: a=10.148(1)Å, b=21.879(2), c=19.154(2)Å, β=104.11(1)°, V=4124.3(7)Å3. The polyhedron is a distorted tricapped trigonal prism, coordination number nine.