A5085500920- Organometallic Compounds Synthesis and Characterization
- Crystal structures of chemical compounds
- Metal complexes synthesis and properties
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Organometallic Complex Synthesis and Catalysis
- Inorganic and Organometallic Chemistry
- Various Chemistry Research Topics
- Crystal Structures and Properties
- Catalytic Processes in Materials Science
- Inorganic Fluorides and Related Compounds
- Chemical Thermodynamics and Molecular Structure
- X-ray Diffraction in Crystallography
- History and advancements in chemistry
- Magnetism in coordination complexes
- Thermal and Kinetic Analysis
- Solid-state spectroscopy and crystallography
- Crystallography and molecular interactions
- Chemical Synthesis and Reactions
- Radioactive element chemistry and processing
- Fluorine in Organic Chemistry
- Asymmetric Hydrogenation and Catalysis
- Synthesis and characterization of novel inorganic/organometallic compounds
- Iron oxide chemistry and applications
- Ionic liquids properties and applications
Universidad Autónoma de Madrid
2003-2021
Osaka City University
1997
This paper is one of a series exploring simple approaches for the estimation lattice energy ionic materials, avoiding elaborate computation. The readily accessible, frequently reported, and easily measurable (requiring only small quantities inorganic material) property density, rho(m), related, as rectilinear function form (rho(m)/M(m))(1/3), to U(POT) where M(m) chemical formula mass. Dependence on cube root particularly advantageous because this considerably lowers effects any experimental...
The role of interface contact between two oxides, CeO2 and TiO2, for the photocatalytic elimination toluene is examined in a series samples with variable quantities ceria. Samples having ceria contents 1 to 10 mol % range improve significantly, exhibiting up 3.5 times activity bare nano-TiO2 catalyst. To interpret behavior, this contribution develops novel spectro-kinetic approach where joined analysis kinetics reaction fate charge charriers merged mathematical modeling light–catalyst...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilver(II) Oxide or Silver(I,III) Oxide?David Tudela View Author Information Departamento de Química Inorgánica, Universidad Autónoma Madrid, 28049 SpainCite this: J. Chem. Educ. 2008, 85, 6, 863Publication Date (Web):June 1, 2008Publication History Received3 August 2009Published online1 June 2008Published inissue 1 2008https://pubs.acs.org/doi/10.1021/ed085p863https://doi.org/10.1021/ed085p863research-articleACS PublicationsRequest reuse...
Heating cis-[PtCl2(Me2COH)2] in molten 2-propanone oxime affords the cationic complex [PtCl(Me2CNOH)3]Cl. This compound reacts with 1 equiv of NaOH to give neutral cis-[PtCl(Me2CNO)(Me2CNOH)2] (1). Further, reaction [PtCl(Me2CNOH)3]Cl 2 AgNO3 and successive addition excess NaSbF6 afford chloride-free [Pt(Me2CNO)(Me2CNOH)3](SbF6). When a solution NaOH, instead NaSbF6, was added mixture, [Pt(Me2CNO)2(Me2CNOH)2]·2H2O (2) isolated. The homoleptic [Pt(Me2CNOH)4]Cl2 (3) prepared both by HCl...
Ti1−xSnxO2 nanocrystalline materials employed for photocatalysis have been characterised by means of X-ray diffraction, Raman, absorption (XANES and EXAFS) UV-Vis spectroscopy high resolution transmission electron microscopy. Single-phase samples with anatase or rutile type structures similar tin contents permitted a separate study the effect Sn4+ ions on these crystalline forms, whereas composed mixtures were used to investigate distribution dopant cations when both phases coexist. The...
The enhancement of active triggered by surface deposition Cu, Bi, and Ce containing oxidic species onto a high area anatase is analyzed through the calculation quantum efficiency for toluene photodegradation under UV Sunlight-type illumination. To this end, series oxides supported on were synthesized having growing content characterized with X-ray diffraction photoelectron, UV–visible, photoluminescence spectroscopies as well transmission electron microscopy. Utilizing concentration tool, we...
Triphenyltin fluoride has been studied by powder and single-crystal X-ray diffraction. Powder studies show that the polymeric chain of SnPh3F propagates along c axis with a repeat distance ca. 4.29 Å. The colourless crystals are trigonal, space group Pc1 (no. 165), a= 10.358(1), c= 8.583(1)Å Z= 2. F atom lies at an inversion centre, giving rise to crystallographically imposed rod (class 1) polymer identical Sn–F distances 2.1458(3)Å. X-Ray diffraction variable-temperature Mössbauer...
Mössbauer spectra are reported for the cis–trans isomers of SnCl4L2[L =NN-dimethylacetamide (dma), NN-dimethylformamide (dmf), dimethyl sulphoxide (dmso), or tetrahydrothiophen (tht)] and SnBr4(dmf)2. The following octahedral partial quadrupole splitting values were obtained: tht =+0.09, dmso =+0.14, dmf =+0.18, dma =+0.20 mm s–1. A correlation has been found between ν(Sn–Cl)(from i.r. Raman spectra) trans-SnCl4L2.
Abstract 1 H and 119 Sn NMR results indicate that, when Ph 3 SnOH is dissolved in CD 2 Cl , it dehydrates to (Ph Sn) O, only a small amount of remaining equilibrium at room temperature. As result, the reaction TiCl 4 with CH proceeds via hydrolysis halide precipitate amorphous TiO that contains adsorbed organotin species. Calcination precursor 723 K yields nanoparticles tin‐doped photocatalysts, contain anatase rutile phases, may also segregated SnO phase. The conditions lead formation phase...
The platinum(II) complexes trans-[PtCl(2)(RR'C=NOH)(2)], where R = R' Me, RR' (CH(2))(4) and (CH(2))(5), react with m-chloroperoxybenzoic acid in Me(2)CO to give the platinum(IV) [PtCl(2)(OCMe(2)ON=CRR')(2)] 50-60% yields. were characterized by elemental analysis, EI-MS, IR Raman spectroscopies; X-ray structure analyses performed for both trans-[PtCl(2)(OCMe(2)ON=CC(4)H(8))(2)] trans-[PtCl(2)(OCMe(2)ON=CC(5)H(10))(2)]. former compound crystallizes triclinic space group P&onemacr; a 8.088(2)...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew Methods To Estimate Lattice Energies: Application to the Relative Stabilities of Bisulfite (HSO3-) and Metabisulfite (S2O52-) SaltsDavid Tudela H. Donald B. Jenkins View Author Information Departamento de Química Inorgánica, Universidad Autónoma Madrid, 28049 Spain Department Chemistry, University Warwick, Coventry, West Midlands CV4 7AL, United KingdmonCite this: J. Chem. Educ. 2003, 80, 12, 1482Publication Date (Web):December 1,...
Abstract By oxidative‐addition of X 2 (X = Cl, Br) to SnF in acetonitrile, monomeric Cl (MeCN) and polymeric or oligomeric Br are obtained. The corrected v CN IR frequencies provide a good indication the Sn–N bond strength. reactions with I presence DMSO, pyridine yield disproportionation products rather than mixed‐halide compounds. That suggests that stability mixedhalide compounds decreases when difference between halides increases. reaction acetonitrile gives rise 4 , provides simple...
The Sn–Cl distances in octahedral SnCl4L2 compounds are linearly related to the Mössbauer partial quadrupole splitting data; correlation can be used predict distances, and has allowed us detect an error published crystal structure of tetrachlorobis(1,3-diethylthiourea)tin(IV) which was confirmed a redetermination.
The platinum(II) compounds trans-[PtX2(RR‘CNOH)2] [X = Cl, R R‘ Me, RR‘ (CH2)4, (CH2)5; X Br, Me] react with m-chloroperoxybenzoic acid (MCPBA) in dimethylformamide to give the complexes [PtX2{N(O)CRR‘ONCRR‘}] containing coordinated nitrosoalkane ligands. were characterized by elemental analysis, EI-MS, IR, electronic absorption, and 1H NMR spectroscopy; X-ray structure analysis was performed for [PtCl2{N(O)CC5H10ONCC5H10}]. latter compound crystallizes triclinic P1̄ space group a 9.214(2)...
Mössbauer and crystallographic data have been obtained for pyridinium tetrabromodiphenylstannate(IV). The Sn atom is six-co-ordinated in the centrosymmetric trans-[SnBr4Ph2]2– anion with bond distances Sn–Br(1) 2.7592(3), Sn–Br(2) 2.7737(3) Sn–C(11) 2.158(3)Å. average Sn–Br distance five octahedral tin(IV) bromide complexes, SnBr4L2, related to partial quadrupole splitting (p.q.s.) of ligands by means correlation d(Sn–Br)/Å=(–0.048 ± 0.002)(4 p.q.s.)+(2.589 0.003). relationship rationalises...
Carbon nitride based materials incorporating K and Na alkali ions were used as support(s) to deposit platinum. The systems tested in the photo-production of hydrogen using methanol a sacrificial molecule. Tests under UV sunlight-type illumination conditions showed an important promoting effect irrespective source characteristics. measurement quantum efficiency was quantitatively assess performance catalysts. Outstanding results obtained, particularly sunlight illumination. A complete...