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Relevant bibliographies by topics / Titanium oxo compounds

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Academic literature on the topic 'Titanium oxo compounds'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Titanium oxo compounds"

1

Schubert, Ulrich, Maria Bendova, Matthias Czakler, Christian Maurer, and Claudia Visinescu. "The structural chemistry of titanium alkoxide derivatives with OH-substituted bidentate ligands." Monatshefte für Chemie - Chemical Monthly 151, no. 11 (2020): 1697–703. http://dx.doi.org/10.1007/s00706-020-02698-z.

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Abstract The organically modified titanium alkoxides Ti2(Oi-Pr)4(OOCCMe2O)2(i-PrOH)2 and Ti4(Oi-Pr)4(SA)6 were obtained from the reaction of Ti(Oi-Pr)4 with 2-hydroxy-isobutyric acid and salicyladoxime (SA-H2), respectively. Reaction of 1,3-dibenzoyl acetone (DBA-H) did not result in a substituted titanium alkoxide derivative, but instead in the oxo cluster Ti4O2(Oi-Pr)8(DBA)2 after allowing moisture to diffuse into the reaction mixture. The three titanium compounds show common structural features which are different to derivatives void of ligand OH groups. The latter play a decisive role in coordinating the ligands to the titanium centers. Graphic abstract

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2

Tarakci, Deniz Kutlu, İlke Gürol, and Vefa Ahsen. "2,2,3,3-Tetrafluoropropoxy substituted oxo-titanium phthalocyanines axially ligated with common MALDI matrix materials." Journal of Porphyrins and Phthalocyanines 17, no. 06n07 (2013): 548–54. http://dx.doi.org/10.1142/s1088424613500399.

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The synthesis of tetra and octa 2,2,3,3-tetrafluoropropoxy substituted oxo-titanium phthalocyanines (TiOPc) are reported. Using strongly chelating oxygen donor ligands, the reactions of TiOPc with catecholate (1a, 2a), 4-nitrocatecholate (1b, 2b) and caffeic acid (1c, 2c), ellagic acid (1d, 2d) and chlorogenic acid (1e, 2e) are described. The new compounds were characterized by mass, 1 H NMR, FT-IR, and UV-vis spectroscopic techniques as well as elemental analysis.

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Sirimahasal, Thanakit, Siriporn Pranee, Sunanta Chuayprakong, Semih Durmus, and Samitthichai Seeyangnok. "Synthesis and Characterization of Bismuth Oxo Compounds Supported on TiO₂ Photocatalysts for Waste Water Treatment." Key Engineering Materials 757 (October 2017): 108–12. http://dx.doi.org/10.4028/www.scientific.net/kem.757.108.

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Azo dyes are usually used in textile industry. However, they can cause water contamination, lead to water pollution, damage to aquatic lives and degenerate scenery due to their toxicity. These problems can be overcome by photocatalytic process in which the azo dyes are converted to CO2 and water. This research concentrates on effect of Bi2O3, BiOBr and BiOI contents on titanium dioxide substance (TiO2) for the photocatalytic process. In the study, photocatalysts were synthesized by sol-gel and wetness impregnation methods. They were studied in surface area by BET technique, chemical composition by FT-IR spectroscopy and optical properties by UV-DRS technique. Increase in bismuth content on TiO2 results in decreasing surface area. In FT-IR spectra, Ti-O-Ti stretching bands at 400-800 cm-1 were detected. The band gap energy of these photocatalysts is decreased when bismuth was doped. Since efficiency of CO2 and water conversion of the photocatalysts can be determined indirectly via determinaiton of decreasing Methyl Orange (MO) concentration, the lowest MO concentration was observed in the 4%Bi2O3T photocatalyst after 16 hours when compared to the other photocatalyst samples and Degussa P25. In other words, this photocatalyst efficiently converts the azo dyes to CO2 and water.

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Buitrago, Olga, Carmen Ramírez de Arellano, Gerardo Jiménez та Tomás Cuenca. "Stable Methylene- and Oxo-Bridged Monocyclopentadienyl Titanium Compounds. Molecular Structure of {Ti[μ-(η5-C5Me4SiMe2-O)]Me}2(μ-CH2)†". Organometallics 23, № 24 (2004): 5873–76. http://dx.doi.org/10.1021/om0495426.

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Alcock, Nathaniel W., David A. Brown, S. Mark Roe, and Malcolm G. H. Wallbridge. "Synthesis of new titanium–oxo cluster compounds: X-ray structure of the tetranuclear oxide [Ti4Cl6(µ2-O2CPh)6(µ3-O)2]." J. Chem. Soc., Chem. Commun., no. 11 (1992): 846–48. http://dx.doi.org/10.1039/c39920000846.

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Barrow, Hazel, David A. Brown, Nathaniel W. Alcock, William Errington, and Malcolm G. H. Wallbridge. "Titanium oxo carboxylate compounds. Crystal and molecular structures of [{TiCl2(O2CEt)(ETCo2H)}2O] and [Ti3Cl3O2(O2CEt)5] and an unusual quantitative conversion of a Ti2O to a Ti3O2 oxo derivative." Journal of the Chemical Society, Dalton Transactions, no. 24 (1994): 3533. http://dx.doi.org/10.1039/dt9940003533.

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7

Bashall, Alan, David A. Brown, Mary McPartlin, and Malcolm G. H. Wallbridge. "Dalton communications. A convenient high-yield synthesis of some titanium(IV) oxo cluster compounds: crystal structure of [Ti3Cl3(µ-O2CC6H4Me-p)5(µ-O)(µ3-O)]." J. Chem. Soc., Dalton Trans., no. 16 (1992): 2529–30. http://dx.doi.org/10.1039/dt9920002529.

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8

Manne, Rajesh, Maya Miller, Andrew Duthie, M. Fátima C. Guedes da Silva, Edit Y. Tshuva, and Tushar S. Basu Baul. "Cytotoxic homoleptic Ti(iv) compounds of ONO-type ligands: synthesis, structures and anti-cancer activity." Dalton Transactions 48, no. 1 (2019): 304–14. http://dx.doi.org/10.1039/c8dt03747g.

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Reacting variously substituted dianionic tridentate ONO-type acylhydrazone ligands with titanium(iv) tetra(isopropoxide) gave a new class of eight homoleptic titanium(iv) compounds showing exceptional stability and promising cytotoxicity.

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9

Kuhn, Annemarie, Alfred Muller та Jeanet Conradie. "μ-2,2′-Biphenolato-κ2 O:O′-μ-oxido-κ2 O:O-bis[bis(hexafluoroacetylacetonato-κ2 O,O′)titanium(IV)]". Acta Crystallographica Section E Structure Reports Online 63, № 3 (2007): m664—m666. http://dx.doi.org/10.1107/s1600536807004588.

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The coordination of [Ti(hfaa)2Cl2] (hfaa = hexafluoroacetylacetonate) with the hydroxyl-containing bidentate ligand 2,2′-biphenol yielded the title compound, [{Ti(hfaa)2}2(μ-2,2′-biphenolato)(μ-oxo)] or [Ti2(C5HF6O2)4(C12H8O2)O]. The molecule has crystallographic twofold rotation symmetry. The biphenolate ligand bridges the two Ti atoms.

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Bloomfield, Hannah R., Joshua W. Hollett, and Jamie S. Ritch. "Crystal structure and computational study of an oxo-bridged bis-titanium(III) complex." Acta Crystallographica Section C Structural Chemistry 77, no. 7 (2021): 391–94. http://dx.doi.org/10.1107/s2053229621006094.

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The solid-state structure of the new compound μ-oxido-bis[dichloridotris(tetrahydrofuran-κO)titanium(III)], [Ti2Cl4O(C4H8O)6], at 150 K has been determined. The crystal has monoclinic (C2/c) symmetry and the complex features C 2 symmetry about the bridging O atom. Positional disorder is evident in one of the three tetrahydrofuran environments. A post-Hartree–Fock computational analysis indicates that the complex has nearly degenerate triplet and singlet spin states, with the former favoured slightly by ca 2 kJ mol−1.

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Dissertations / Theses on the topic "Titanium oxo compounds"

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Mehner, Alexander. "Zwillingspolymerisation von Titan-oxo-Verbindungen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-222231.

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In der vorliegenden Arbeit werden die Synthese und die Charakterisierung neuer Titan-oxo-Monomere beschrieben. Ein weiterer Teil beschäftigt sich mit dem kationischen Polymerisationsverhalten dieser Verbindungen, welche dem Typ der „Zwillingspolymerisationen“ zugeordnet werden kann. Die Charakterisierung der dabei entstehenden nanostrukturierten Hybridmaterialien aus Titandioxid und organischen Polymeren wird beschrieben. Als Vergleich dienen Simultanpolymerisationen von Titanalkoxiden und polymerisierbaren organischen Alkoholen.

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2

"Part I. Studies of octasubstituted Oxo(phthalocyaninato)titanium(IV) complexes: Part II. Dioxotungsten(VI) complexes with N2O2 and N2S2 tetradentate ligands." 1996. http://library.cuhk.edu.hk/record=b5889192.

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by Wing-Fong Law.<br>Year shown on spine: 1997.<br>The "2" in the title is subscript.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1996.<br>Includes bibliographical references (leaves 103-110).<br>ACKNOWLEDGMENT --- p.i<br>CONTENTS --- p.ii<br>LIST OF FIGURES --- p.v<br>LIST OF TABLES --- p.vii<br>ABBREVIATIONS --- p.viii<br>ABSTRACT --- p.x<br>Chapter I. --- STUDIES OF OCTASUBSTITUTED OXO(PHTHALOCYANINATO) TITANIUM(IV) COMPLEXES<br>Chapter 1. --- INTRODUCTION --- p.2<br>Chapter 2. --- RESULTS AND DISCUSSION<br>Chapter 2.1. --- Preparation of Substituted Dicyanobenzenes and Dicyanonaphthalene --- p.9<br>Chapter 2.2. --- Synthesis of Octasubstituted Oxo(phthalocyaninato)titanium(IV) and (Naphthalocyaninato)oxotitanium(IV) Complexes --- p.12<br>Chapter 2.3. --- "Solvent Effects on the UV-Vis Absorption Spectra of (2,3,9,10,16, 17,23,24-Octaheptylphthalocyaninato)oxotitanium(IV)" --- p.27<br>Chapter 2.4. --- Aggregation of Octasubstituted Oxo(phthalocyaninato)titanium(IV) and (Naphthalocyaninato)oxotitanium(IV) Complexes --- p.29<br>Chapter 2.5. --- Electrochemical Studies of Octasubstituted Oxo(phthalocyaninato)- titanium(IV) and (Naphthalocyaninato)oxotitanium(IV) Complexes --- p.34<br>Chapter 2.6. --- Reactions of Disubstituted Dicyanobenzenes with Zirconium(IV) Butoxide and Urea --- p.39<br>Chapter 2.7. --- Conclusion --- p.40<br>Chapter 3. --- EXPERIMENTAL SECTION<br>Chapter 3.1. --- Materials --- p.42<br>Chapter 3.2. --- Physical Measurements --- p.42<br>Chapter 3.3. --- "Preparation of l,2-Dicyano-4,5-diheptylbenzene" --- p.43<br>Chapter 3.4. --- "Preparation of l,2-Dicyano-4,5-bis(pentyloxy)benzene" --- p.45<br>Chapter 3.5. --- "Preparation of l,2-Dicyano-4,5-bis(alkoxymethyl)benzene" --- p.47<br>Chapter 3.6. --- "Preparation of 3,6-Bis(butyloxy)-l,2-dicyanobenzene" --- p.49<br>Chapter 3.7. --- "Preparation of 2,3-Dicyano-5,8-dihexylnaphthalene" --- p.50<br>Chapter 3.8. --- Preparation of Octasubstituted Oxo(phthalocyaninato)titanium(IV) Complexes --- p.52<br>Chapter 3.9. --- Preparation of Octasubstituted (Naphthalocyaninato)oxotitanium(IV) Complex --- p.57<br>Chapter 3.10. --- Miscellaneous Syntheses --- p.58<br>Chapter II. --- dioxotungsten(vi) complexes with n202 and n2s2 tetradentate ligands<br>Chapter 1. --- INTRODUCTION --- p.62<br>Chapter 2. --- RESULTS AND DISCUSSION<br>Chapter 2.1. --- Preparation of Tetradentate Ligands --- p.75<br>Chapter 2.2. --- Preparation of Dioxotungsten(VI) Complexes --- p.78<br>Chapter 2.3. --- Electrochemical Studies of Dioxotungsten(VI) Complexes --- p.86<br>Chapter 2.4. --- Oxo-transfer Properties of Dioxotungsten(VI) Complexes --- p.91<br>Chapter 2.5. --- Conclusion --- p.94<br>Chapter 3. --- EXPERIMENTAL SECTION<br>Chapter 3.1. --- Materials --- p.95<br>Chapter 3.2. --- Physical Measurements --- p.95<br>Chapter 3.3. --- Preparation of Tetradentate Ligands --- p.96<br>Chapter 3.4. --- Preparation of Dioxotungsten(VI) Complexes --- p.100<br>REFERENCES --- p.103<br>APPENDIX A lH NMR spectra of Pc'TiOs --- p.111<br>APPENDIX B 13C{1H} NMR spectra of octasubstituted PcTi compounds --- p.113<br>APPENDIX C Mass spectra of octasubstituted PcTi and PcZr compounds --- p.118<br>"APPENDIX D IR spectra of octasubstituted PcTi, NcTi and PcZr compounds" --- p.124<br>APPENDIX E Cyclic voltammograms of octasubstituted PcTiOs and NcTiO --- p.131<br>APPENDIX F Determination of aggregation number (n) and aggregation constant (K) --- p.136<br>APPENDIX G 1H NMR spectra of dioxotungsten(VI) complexes --- p.138<br>APPENDIX H 13C{1H} NMR spectra of dioxotungsten(VI) complexes --- p.140<br>APPENDIX I LSI mass spectra of dioxotungsten(VI) complexes --- p.143<br>APPENDIX J IR spectra of dioxotungsten(VI) complexes --- p.147<br>APPENDIX K Crystallographic data of W02(L2-N202) (64) --- p.150<br>APPENDIX L Kinetic data for the oxo-transfer reactions --- p.160

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3

Mehner, Alexander. "Zwillingspolymerisation von Titan-oxo-Verbindungen." Doctoral thesis, 2016. https://monarch.qucosa.de/id/qucosa%3A20672.

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In der vorliegenden Arbeit werden die Synthese und die Charakterisierung neuer Titan-oxo-Monomere beschrieben. Ein weiterer Teil beschäftigt sich mit dem kationischen Polymerisationsverhalten dieser Verbindungen, welche dem Typ der „Zwillingspolymerisationen“ zugeordnet werden kann. Die Charakterisierung der dabei entstehenden nanostrukturierten Hybridmaterialien aus Titandioxid und organischen Polymeren wird beschrieben. Als Vergleich dienen Simultanpolymerisationen von Titanalkoxiden und polymerisierbaren organischen Alkoholen.

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Book chapters on the topic "Titanium oxo compounds"

1

Pardasani, R. T., and P. Pardasani. "Magnetic properties of titanium(III) bridging-oxo complex with benzamidinate ligand." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54228-6_32.

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2

Mikami, K., Y. Matsumoto, and T. Shiono. "Carbonyl Coupling of Carbamoyl(oxo) Compounds Promoted by Low-Valent Titanium." In Compounds of Groups 7-3 (Mn..., Cr..., V..., Ti..., Sc..., La..., Ac...). Georg Thieme Verlag KG, 2003. http://dx.doi.org/10.1055/sos-sd-002-00793.

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3

Jolivet, Jean-Pierre. "Titanium, Manganese, and Zirconium Dioxides." In Metal Oxide Nanostructures Chemistry. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190928117.003.0011.

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The dioxides of titanium (TiO2), manganese (MnO2), and zirconium (ZrO2) are important materials because of their technological uses. TiO2 is used mainly as white pigment. Because of its semiconducting properties, TiO2, in its nanomaterial form, is also used as an active component of photocells and photocatalysis for self-cleaning glasses and cements . MnO2 is used primarily in electrode materials. ZrO2 is used in refractory ceramics, abrasive materials, and stabilized zirconia as ionic conductive materials stable at high temperature. Many of these properties are, of course, dependent on particle size and shape (§ Chap. 1). Dioxides of other tetravalent elements with interesting properties have been studied elsewhere in this book, especially VO2, which exhibits a metal–isolator transition at 68°C, used, for instance, in optoelectronics (§ 4.1.5), and silica, SiO2 (§ 4.1.4), which is likely the most ubiquitous solid for many applications and uses. Aqueous chemistry is of major interest in synthesizing these oxides in the form of nanoparticles from inorganic salts and under simple, cheap, and environmental friendly conditions. However, as the tetravalent elements have restricted solubility in water (§ 2.2), metal–organic compounds such as titanium and zirconium alkoxides are frequently used in alcoholic solution as precursors for the synthesis of TiO2 and ZrO2 nanoparticles. An overview of the conversion of alkoxides into oxides is indicated about silica formation (§ 4.1.4), and since well-documented works have already been published, these compounds are not considered here. The crystal structures of most MO2 dioxides are of TiO2 rutile type for hexacoordinated cations (e.g., Ti, V, Cr, Mn, Mo, W, Sn, Pb) and CaF2 fluorite type for octacoordinated, larger cations (e.g., Zr, Ce), but polymorphism is common. Some dioxides of elements such as chromium and tin form only one crystalline phase. So, hydrolysis of SnCl4 or acidification of stannate [Sn(OH)6]2− leads both to the same rutile-type phase, cassiterite, SnO2. Many other dioxides are polymorphic, especially TiO2, which exists in three main crystal phases: anatase, brookite, and rutile; and MnO2, which gives rise to a largely diversified crystal chemistry.

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4

Öhrström, Lars. "Diamonds are Forever and Zirconium is for Submarines." In The Last Alchemist in Paris. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199661091.003.0011.

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The appearance of a diamond engagement ring in the long and convoluted love story between Botswana’s First Lady Detective, Mma Ramotswe, and the owner and brilliant mechanic of Tlokweng Road Speedy Motors, Mr J. L. B. Matekoni, seems to signal an end to this particular sub-plot, stretching over several volumes of Alexander McCall Smith’s bestselling and original series of crime novels (that we met in Chapter 1). However, a slight problem involving cubic zirconia is discovered, and the story lingers on until the next book in the series. Similar names for elements and their compounds are a nuisance in chemistry, but oft en arise historically, and zirconium is just one such example. Apart from the pure metal we have zircon and zirconia, all three of which have important applications. Zircon is zirconium silicate, with the formula ZrSiO4, and cubic zirconia is a special form of zirconium dioxide, ZrO2. The latter, as you may have guessed, is an excellent diamond substitute in, among other applications, engagement rings. We are not going to dwell on the details of the element zirconium, but you should know that within the Periodic Table it is located in the large middle chunk called the transition metals. You have probably heard of its cousin titanium, immediately above it, and a sibling, hafnium, straight down the ladder. Why do I call them siblings? Because in the Periodic Table elements in the same column tend to have similar chemical properties. In particular, in the family of transition metals in the central section containing 27 elements—each with a number of properties in common—the two lower elements in each column tend to be the most similar. The similar chemical properties of zirconium and titanium means that we can usually find zirconium where we mine the much more plentiful titanium, and also that once we have separated the titanium from zirconium there will be a small quantity of hafnium trailing along—an impurity that is much harder to get rid of. The sleek jeweller in Gaborone will not care if his fake diamonds contain trace levels of HfO2 mixed with the ZrO2.

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Smith, M. B. "By Heating with Titanium(IV) Isopropoxide." In Three Carbon-Heteroatom Bonds: Esters and Lactones; Peroxy Acids and R(CO)OX Compounds; R(CO)X, X=S, Se, Te. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-021-00606.

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Tracey, M. R., R. P. Hsung, J. Antoline, et al. "Titanium(II)-Mediated Coupling of Ynamides and Aldehydes." In Three Carbon-Heteroatom Bonds: Esters and Lactones; Peroxy Acids and R(CO)OX Compounds; R(CO)X, X=S, Se, Te. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-021-00370.

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Tracey, M. R., R. P. Hsung, J. Antoline, et al. "Titanium(II)-Mediated Coupling of Ynamides and Alkynes." In Three Carbon-Heteroatom Bonds: Esters and Lactones; Peroxy Acids and R(CO)OX Compounds; R(CO)X, X=S, Se, Te. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-021-00436.

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