1
|
Kumar A, Ghatak A, Murugavel R. Facile room-temperature synthesis of layered transition metal phosphonates via hitherto unknown alkali metal tert-butyl phosphonates. Dalton Trans 2024; 53:14399-14410. [PMID: 39140187 DOI: 10.1039/d4dt01668h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
A facile room-temperature synthetic method is presented to produce alkali metal salts of tert-butyl phosphonic acid. The reaction between equimolar amounts of alkali metal carbonates and tert-butyl phosphonic acid in methanol results in the formation of [(tBuPO3H)Li(H2O)3·(H2O)] (1), [(tBuPO3)Na2(H2O)4]n (2), and [(tBuPO3H)K(H2O)]n (3). Solid-state structures of these compounds have been confirmed by single-crystal X-ray diffraction studies and further validated using numerous spectroscopic and analytical techniques. Compounds 1-3 are polymeric solids that are predominantly made up of a 1-D polymeric metal phosphonate chain. This synthetic approach leads to the formation of network structures/polymers in the solid state that otherwise are absent in solution due to the ionic nature of the interaction between the alkali metal ions and phosphonate anions. Apart from the multidentate nature of the phosphonate ligands, additional hydrogen bonding interactions involving water molecules, free P-OH groups, and PO moieties allow these chains to be propagated into 2-D sheets. We have further utilized the completely metalated sodium phosphonate 2 to synthesize layered metal phosphonates [(tBuPO3)Ca(H2O)]n (4), [(tBuPO3)Mn(H2O)]n (5) and [(tBuPO3)Co(H2O)]n (6) via a simple metathesis reaction.
Collapse
Affiliation(s)
- Anuj Kumar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Aheli Ghatak
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| |
Collapse
|
2
|
Schubert U. Titanium-Oxo Clusters with Bi- and Tridentate Organic Ligands: Gradual Evolution of the Structures from Small to Big. Chemistry 2021; 27:11239-11256. [PMID: 34018652 PMCID: PMC8457127 DOI: 10.1002/chem.202101287] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Indexed: 11/16/2022]
Abstract
Homometallic titanium oxo clusters are one of the most important groups of metal oxo clusters, with more than 300 examples characterized by X-ray structure analyses. Most of them are uncharged and are obtained by partial hydrolysis and condensation of titanium alkoxo derivatives. The cluster cores, ranging from 3 to >50 titanium atoms, are stabilized by organic ligands. Apart from residual OR groups, carboxylato and phosphonato ligands are most frequent. The article critically reviews and categorizes the known structures and works out basic construction principles by comparing the different cluster types.
Collapse
Affiliation(s)
- Ulrich Schubert
- Institute of Materials ChemistryTechnische Universität WienGetreidemarkt 91060WienAustria
| |
Collapse
|
3
|
Blilid S, Katir N, El Haskouri J, Lahcini M, Royer S, El Kadib A. Phosphorylated micro- vs. nano-cellulose: a comparative study on their surface functionalisation, growth of titanium-oxo-phosphate clusters and removal of chemical pollutants. NEW J CHEM 2019. [DOI: 10.1039/c9nj03187a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Phosphorylation imparts cellulose (amorphous or crystalline) with original surface reactivity to bridge metal oxide clusters and to scavenge for chemicals.
Collapse
Affiliation(s)
- Sara Blilid
- Euromed Research Center
- Engineering Division
- Euro-Med University of Fes (UEMF)
- Route de Meknes
- Fès
| | - Nadia Katir
- Euromed Research Center
- Engineering Division
- Euro-Med University of Fes (UEMF)
- Route de Meknes
- Fès
| | - Jamal El Haskouri
- Instituto de Ciència de los Materials de la Universidad de Valencia
- Calle catedratico José Beltran
- 46980 Valencia
- Spain
| | - Mohamed Lahcini
- Laboratory of Organometallic and Macromolecular Chemistry-Composites Materials
- Faculty of Sciences and Technologies
- Cadi Ayyad University
- 40000 Marrakech
- Morocco
| | - Sébastien Royer
- Univ. Lille, CNRS, ENSCL
- Centrale Lille
- Univ Artois
- UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide
- F-59000 Lille
| | - Abdelkrim El Kadib
- Euromed Research Center
- Engineering Division
- Euro-Med University of Fes (UEMF)
- Route de Meknes
- Fès
| |
Collapse
|
4
|
Liu Q, Jordan RF. Multinuclear Palladium Olefin Polymerization Catalysts Based on Self-Assembled Zinc Phosphonate Cages. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00683] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qian Liu
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Richard F. Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| |
Collapse
|
5
|
Bhat GA, Verma S, Rajendran A, Murugavel R. Thermolabile Organotitanium Monoalkyl Phosphates: Synthesis, Structures, and Utility as Epoxidation Catalysts and Single-Source Precursors for TiP 2O 7. Inorg Chem 2018; 57:7644-7654. [PMID: 29906112 DOI: 10.1021/acs.inorgchem.8b00611] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of [Cp*TiCl3] (Cp* = C5Me5) with monoalkyl phosphates (RO)PO3H2 (R = Me, Et, and iPr) in tetrahydrofuran (THF) at 25 °C leads to the formation of binuclear complexes [Cp*2Ti2(μ-O2P(OH)OR)2(μ-O2P(O)OR)2] [R = Me (1), Et (2), and iPr (3)]. On the other hand, the reaction of ( tBuO)2PO2K with [Cp*TiCl3] in acetonitrile or THF results in isolation of either the dinuclear [Cp*2Ti2(μ-O2P(OH)O tBu)2(μ-O2P(O)O tBu)2] (4) or the trinuclear titanophosphate [Cp*3Ti3(μ-O3PO tBu)2(μ-O)2(μ-O2P(O tBu)2)] (5), respectively. The formation of compounds 4 and 5 is facilitated by partial hydrolysis of the tert-butoxy groups of ( tBuO)2PO2K. New titanophosphates 1-5 have been characterized by spectroscopic and analytical methods, and the molecular structures have further been confirmed by single-crystal X-ray diffraction studies. Thermal decomposition studies of 1-5 reveal the initial loss of thermally labile alkyl substituents of the organophosphate ligands, followed by the loss of C5Me5 groups to form an organic-free amorphous titanophosphate in the temperature range 300-500 °C. This material transforms to highly crystalline titanium pyrophosphate TiP2O7 at 800 °C. Compounds 1-5 and the TiP2O7 materials obtained at 300, 500, and 800 °C through the thermal decomposition of 3 have been employed as efficient homogeneous catalysts for the alkene epoxidation reaction. Using hydrogen peroxide as the oxidant in an acetonitrile medium, these catalysts exhibit >90% alkene conversion with >90% epoxide selectivity in 4 h at temperatures below 100 °C.
Collapse
Affiliation(s)
- Gulzar A Bhat
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Sonam Verma
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Antony Rajendran
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Ramaswamy Murugavel
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| |
Collapse
|
6
|
|
7
|
Sharma K, Antony R, Kalita AC, Gupta SK, Davis P, Murugavel R. Complex Structural Landscape of Titanium Organophosphonates: Isolation of Structurally Related Ti4, Ti5, and Ti6 Species and Mechanistic Insights. Inorg Chem 2017; 56:12848-12858. [DOI: 10.1021/acs.inorgchem.7b01651] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kamna Sharma
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Rajendran Antony
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Alok Ch. Kalita
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandeep Kumar Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Paul Davis
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
8
|
Affiliation(s)
- Joydeb Goura
- Department
of Chemistry, Indian Institute of Technology-Kanpur, Kanpur 208 016, India
| | - Vadapalli Chandrasekhar
- Department
of Chemistry, Indian Institute of Technology-Kanpur, Kanpur 208 016, India
- National Institute of Science Education and Research, Institute of Physics Campus, Sachivalaya Marg,
Sainik School, Bhubaneswar, Orissa 751 005, India
| |
Collapse
|
9
|
Kalita AC, Murugavel R. Fluoride Ion Sensing and Caging by a Preformed Molecular D4R Zinc Phosphate Heterocubane. Inorg Chem 2014; 53:3345-53. [DOI: 10.1021/ic500193n] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Alok Ch. Kalita
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| |
Collapse
|
10
|
Organotitanium phosphates with free P–OH groups: Synthesis, spectroscopy and solid state structures. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.07.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
11
|
Chen Y, Trzop E, Sokolow JD, Coppens P. Direct Observation of the Binding Mode of the Phosphonate Anchor to Nanosized Polyoxotitanate Clusters. Chemistry 2013; 19:16651-5. [DOI: 10.1002/chem.201302012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 09/12/2013] [Indexed: 10/26/2022]
Affiliation(s)
- Yang Chen
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260‐3000 (USA), Fax: (+1) 716‐645‐6948
| | - Elzbieta Trzop
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260‐3000 (USA), Fax: (+1) 716‐645‐6948
| | - Jesse D. Sokolow
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260‐3000 (USA), Fax: (+1) 716‐645‐6948
| | - Philip Coppens
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260‐3000 (USA), Fax: (+1) 716‐645‐6948
| |
Collapse
|
12
|
Czakler M, Artner C, Schubert U. Influence of the Phosphonate Ligand on the Structure of Phosphonate-Substituted Titanium Oxo Clusters. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300859] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
13
|
Mautner FA, Navarro M, Speed S, El Fallah MS, Font-Bardia M, Vicente R. Two different coordination geometries in polynuclear manganese(II) complexes with bis(μ-phosphinato) bridges. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Chandrasekhar V, Senapati T, Dey A, Sañudo EC. Rational Assembly of Soluble Copper(II) Phosphonates: Synthesis, Structure and Magnetism of Molecular Tetranuclear Copper(II) Phosphonates. Inorg Chem 2011; 50:1420-8. [DOI: 10.1021/ic101982c] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Tapas Senapati
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Atanu Dey
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - E. Carolina Sañudo
- Departament de Química Inorgànica and Institute for Nanoscience and Nanotechnology, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain
| |
Collapse
|
15
|
Chandrasekhar V, Senapati T, Dey A, Hossain S. Molecular transition-metal phosphonates. Dalton Trans 2011; 40:5394-418. [DOI: 10.1039/c0dt01069c] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
16
|
Murugavel R, Gogoi N. Rings, chains and cages in metal phosphate chemistry: The interdependence and possible interconversion between various structural forms. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.10.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
17
|
Murugavel R, Kuppuswamy S, Gogoi N, Steiner A. Assembling Discrete D4R Zeolite SBUs through Noncovalent Interactions. 3. Mediation by Butanols and 1,2-Bis(dimethylamino)ethane. Inorg Chem 2010; 49:2153-62. [DOI: 10.1021/ic901932r] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology—Bombay, Powai, Mumbai 400076, India
| | - Subramaniam Kuppuswamy
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology—Bombay, Powai, Mumbai 400076, India
| | - Nayanmoni Gogoi
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology—Bombay, Powai, Mumbai 400076, India
| | - Alexander Steiner
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| |
Collapse
|
18
|
Murugavel R, Kuppuswamy S, Gogoi N, Boomishankar R, Steiner A. Noncovalent Synthesis of Hierarchical Zinc Phosphates from a Single Zn4O12P4Double-Four-Ring Building Block: Dimensionality Control through the Choice of Auxiliary Ligands. Chemistry 2009; 16:994-1009. [DOI: 10.1002/chem.200901994] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
19
|
Murugavel R, Gogoi N, Clérac R. Tetra- and Decanuclear Iron(III) Phosphonates: Observance of a Rare P−C Bond Cleavage in a Homogeneous Medium. Inorg Chem 2008; 48:646-51. [DOI: 10.1021/ic8017562] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry and Centre for Research in Nanotechnology and Science (CRNTS), Indian Institute of Technology—Bombay, Powai, Mumbai-400076, India, and CNRS, UPR 8641, Centre de Recherche Paul Pascal (CRPP), Equipe “Matériaux Moléculaires Magnétiques”, 115 avenue du Dr. Albert Schweitzer, Pessac, F-33600, France, and Université de Bordeaux, UPR 8641, Pessac, F-33600, France
| | - Nayanmoni Gogoi
- Department of Chemistry and Centre for Research in Nanotechnology and Science (CRNTS), Indian Institute of Technology—Bombay, Powai, Mumbai-400076, India, and CNRS, UPR 8641, Centre de Recherche Paul Pascal (CRPP), Equipe “Matériaux Moléculaires Magnétiques”, 115 avenue du Dr. Albert Schweitzer, Pessac, F-33600, France, and Université de Bordeaux, UPR 8641, Pessac, F-33600, France
| | - Rodolphe Clérac
- Department of Chemistry and Centre for Research in Nanotechnology and Science (CRNTS), Indian Institute of Technology—Bombay, Powai, Mumbai-400076, India, and CNRS, UPR 8641, Centre de Recherche Paul Pascal (CRPP), Equipe “Matériaux Moléculaires Magnétiques”, 115 avenue du Dr. Albert Schweitzer, Pessac, F-33600, France, and Université de Bordeaux, UPR 8641, Pessac, F-33600, France
| |
Collapse
|
20
|
Murugavel R, Kuppuswamy S, Maity AN, Singh MP. Di-, Tri-, Tetra-, and Hexanuclear Copper(II) Mono-organophosphates: Structure and Nuclearity Dependence on the Choice of Phosphorus Substituents and Auxiliary N-Donor Ligands. Inorg Chem 2008; 48:183-92. [DOI: 10.1021/ic801532y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| | - Subramaniam Kuppuswamy
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| | - Amarendra Nath Maity
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| | - Mayank Pratap Singh
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| |
Collapse
|
21
|
Murugavel R, Kuppuswamy S, Gogoi N, Steiner A, Bacsa J, Boomishankar R, Suresh K. Controlling the Structure of Manganese(II) Phosphates by the Choice and Ratio of Organophosphate and Auxiliary Ligands. Chem Asian J 2008; 4:143-53. [DOI: 10.1002/asia.200800317] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
22
|
Murugavel R, Kuppuswamy S. Organic-Soluble Tri-, Tetra-, and Pentanuclear Titanium(IV) Phosphates. Inorg Chem 2008; 47:7686-94. [DOI: 10.1021/ic800675n] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| | - Subramaniam Kuppuswamy
- Department of Chemistry and Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
| |
Collapse
|
23
|
Synthesis, spectroscopic and X-ray characterization of new molecular organotitanium(IV) phosphonate. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2007.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
24
|
Murugavel R, Shanmugan S. Assembling metal phosphonates in the presence of monodentate-terminal and bidentate-bridging pyridine ligands. Use of non-covalent and covalent-coordinate interactions to build polymeric metal–phosphonate architectures. Dalton Trans 2008:5358-67. [DOI: 10.1039/b805848b] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Yi XY, Zhang QF, Lam TCH, Chan EYY, Williams ID, Leung WH. Phosphato, Chromato, and Perrhenato Complexes of Titanium(IV) and Zirconium(IV) Containing Kläui's Tripodal Ligand. Inorg Chem 2005; 45:328-35. [PMID: 16390072 DOI: 10.1021/ic051329u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Treatment of titanyl sulfate in dilute sulfuric acid with 1 equiv of NaL(OEt) (L(OEt)(-) = [(eta(5)-C(5)H(5))Co{P(O)(OEt)(2)](3)](-)) in the presence of Na(3)PO(4) and Na(4)P(2)O(7) led to isolation of [(L(OEt)Ti)(3)(mu-O)(3)(mu(3-)PO(4))] (1) and [(L(OEt)Ti)(2)(mu-O)(mu-P(2)O(7))] (2), respectively. The structure of 1 consists of a Ti(3)O(3) core capped by a mu(3)-phosphato group. In 2, the [P(2)O(7)](4-) ligands binds to the two Ti's in a mu:eta(2),eta(2) fashion. Treatment of titanyl sulfate in dilute sulfuric acid with NaL(OEt) and 1.5 equiv of Na(2)Cr(2)O(7) gave [(L(OEt)Ti)(2)(mu-CrO(4))(3)] (3) that contains two L(OEt)Ti(3+) fragments bridged by three mu-CrO(4)(2-)-O,O' ligands. Complex 3 can act as a 6-electron oxidant and oxidize benzyl alcohol to give ca. 3 equiv of benzaldehyde. Treatment of [L(OEt)Ti(OTf)(3)] (OTf(-) = triflate) with [n-Bu(4)N][ReO(4)] afforded [[L(OEt)Ti(ReO(4))(2)](2)(mu-O)] (4). Treatment of [L(OEt)MF(3)] (M = Ti and Zr) with 3 equiv of [ReO(3)(OSiMe(3))] afforded [L(OEt)Ti(ReO(4))(3)] (5) and [L(OEt)Zr(ReO(4))(3)(H(2)O)] (6), respectively. Treatment of [L(OEt)MF(3)] with 2 equiv of [ReO(3)(OSiMe(3))] afforded [L(OEt)Ti(ReO(4))(2)F] (7) and [[L(OEt)Zr(ReO(4))(2)](2)(mu-F)(2)] (8), respectively, which reacted with Me(3)SiOTf to give [L(OEt)M(ReO(4))(2)(OTf)] (M = Ti (9), Zr (10)). Hydrolysis of [L(OEt)Zr(OTf)(3)] (11) with Na(2)WO(4).xH(2)O and wet CH(2)Cl(2) afforded the hydroxo-bridged complexes [[L(OEt)Zr(H(2)O)](3)(mu-OH)(3)(mu(3)-O)][OTf](4) (12) and [[L(OEt)Zr(H(2)O)(2)](2)(mu-OH)(2)][OTf](4) (13), respectively. The solid-state structures of 1-3, 6, and 11-13 have been established by X-ray crystallography. The L(OEt)Ti(IV) complexes can catalyze oxidation of methyl p-tolyl sulfide with tert-butyl hydroperoxide. The bimetallic Ti/ Re complexes 5 and 9 were found to be more active catalysts for the sulfide oxidation than other Ti(IV) complexes presumably because Re alkylperoxo species are involved as the reactive intermediates.
Collapse
Affiliation(s)
- Xiao-Yi Yi
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, PR China
| | | | | | | | | | | |
Collapse
|
26
|
Bauer T, Chatterjee S, Schulz S, Nieger M, Krossing I. Studien zur Synthese, Struktur und Reaktivität heterozyklischer Metallonitridophosphinate. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
27
|
Murugavel R, Davis P, Walawalkar MG. First Examples of Metal Cyclohexylphosphonates: Influence of the Choice of Synthetic Route on the Product. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500156] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
28
|
Kamimura S, Matsunaga T, Kuwata S, Iwasaki M, Ishii Y. Synthesis, structures, and solution behavior of di- and trinuclear titanium(IV)--cyclophosphato complexes. Inorg Chem 2004; 43:6127-9. [PMID: 15446851 DOI: 10.1021/ic049206h] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of the cyclotetraphosphate ion (P(4)O(12)(4)(-)) with [CpTiCl(3)] (Cp = eta(5)-C(5)Me(5)) gives [(CpTi)(2)(P(4)O(12))(2)](2)(-) where the P(4)O(12) ligands adopt a saddle conformation, while that with [(CpTiCl)(3)(mu-O)(3)] leads to [(CpTi)(3)(mu-O)(3)(P(4)O(12))](-) containing a crown form P(4)O(12) ligand; both products feature their unique cage structures. On the other hand, the reactions of the cyclotriphosphate ion (P(3)O(9)(3)(-)) with [(CpTiCl(2))(2)(mu-O)] and [(CpTiCl)(3)(mu-O)(3)] afford [(CpTi)(2)(mu-O)(P(3)O(9))(2)](2)(-) and [(CpTi)(3)(mu-O)(3)Cl(P(3)O(9))](-), respectively, and in both cases the P(3)O(9) ligands bridge two titanium centers with an eta(2):eta(1) mode.
Collapse
Affiliation(s)
- Sou Kamimura
- Institute of Industrial Science, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | | | | | | | | |
Collapse
|
29
|
Murugavel R, Walawalkar MG, Dan M, Roesky HW, Rao CNR. Transformations of molecules and secondary building units to materials: a bottom-up approach. Acc Chem Res 2004; 37:763-74. [PMID: 15491123 DOI: 10.1021/ar040083e] [Citation(s) in RCA: 208] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of complex inorganic solids with open-framework and other fascinating architectures, involving silicate, phosphate, and other anions, have been synthesized under hydrothermal conditions. The past few years have also seen the successful synthesis and characterization of several molecular compounds that can act as precursors to form open-framework and other materials, some of them resembling secondary building units (SBUs). Transformations of rationally synthesized molecular compounds to materials constitute an important new direction in both structural inorganic chemistry and materials chemistry and enable possible pathways for the rational design of materials. In this article, we indicate the potential of such a bottom-up approach, by briefly examining the transformations of molecular silicates and phosphates. We discuss stable organosilanols and silicate secondary building units, phosphorous acids and phosphate secondary building units, di- and triesters of phosphoric acids, and molecular phosphate clusters and polymers. We also examine the transformations of metal dialkyl phosphates and molecular metal phosphates.
Collapse
Affiliation(s)
- R Murugavel
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400 076, India
| | | | | | | | | |
Collapse
|
30
|
Meliany A, Bali H, Mazzah A, Jaeger RD, Drache M, Gengembre L. ALUMINUM AND TITANIUM IMIDODIPHOSPHATES AS SINGLE PRECURSOR MOLECULES TO ALUMINUM AND TITANIUM PHOSPHATE MATERIALS. PHOSPHORUS SULFUR 2001. [DOI: 10.1080/10426500108040239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Abdeslem Meliany
- a Laboratoire de Spectrochimie Infrarouge et Raman , CNRS , UMR 8516, B[acaron]t. C5, Villeneuve d'Ascq, France
- c UFR Chimie dcs Matériaux, Laboratoire de Chimie Minérale, Faculté des Sciences et Techniques Fès-Saïss , Université Sidi Mohamed Ben Abdellah , Fès, Morocco
| | - Hamza Bali
- c UFR Chimie dcs Matériaux, Laboratoire de Chimie Minérale, Faculté des Sciences et Techniques Fès-Saïss , Université Sidi Mohamed Ben Abdellah , Fès, Morocco
| | - Ahmed Mazzah
- a Laboratoire de Spectrochimie Infrarouge et Raman , CNRS , UMR 8516, B[acaron]t. C5, Villeneuve d'Ascq, France
| | - Roger De Jaeger
- a Laboratoire de Spectrochimie Infrarouge et Raman , CNRS , UMR 8516, B[acaron]t. C5, Villeneuve d'Ascq, France
| | - Michel Drache
- d Laboratoire de Cristallochimie et Physicochimie du Solide , UPRESA , CNRS 8012, ENSCL et USTL, BP. 108, 59652, Villeneuve d'Ascq cedex, France
| | - Leon Gengembre
- b Laboratoire de Catalyse , UPRESA CNRS URA 8010, Université des Scierices et Technologies de Lille , 59655, Villeneuve d'Ascq cedex, France
| |
Collapse
|
31
|
Ribot F, Sanchez C, Biesemans M, Mercier FAG, Martins JC, Gielen M, Willem R. Di-n-butyltin Methyl- and Phenylphosphonates. Organometallics 2001. [DOI: 10.1021/om010140x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
32
|
Mehring M, Guerrero G, Dahan F, Mutin PH, Vioux A. Syntheses, characterizations, and single-crystal X-ray structures of soluble titanium alkoxide phosphonates. Inorg Chem 2000; 39:3325-32. [PMID: 11196871 DOI: 10.1021/ic000002k] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reactions of Ti(OiPr)4 with different phosphonic acids RPO3H2 (R = Ph, 4-CNPh, Me, tBu) in organic solvents have been investigated. In the presence of small amounts of water, the new molecular titanium oxide alkoxide phosphonates [Ti4(mu 3-O)(OiPr)5(mu-OiPr)3(RPO3)3].DMSO [R = Ph (1), Me (2), tBu (3), 4-CNPh (4)] were isolated. The single-crystal X-ray structure analyses of 1 and 2 revealed hexacoordinated titanium atoms and a connectivity of (111) for each phosphonate. Under rigorous exclusion of water, the reaction of Ti(OiPr)4 with tert-butylphosphonic acid in toluene gave the titanium phosphonate tetramer [Ti(OiPr)2(tBuPO3)]4 (5). A single-crystal X-ray structure analysis of 5 revealed a 5 + 1 coordination of the titanium atoms as a result of the (112) connectivity of each phosphonate; such a coordination mode has never been reported for a titanium phosphate, phosphonate, or phosphinate. Compounds 1-5 were characterized by FT-IR, 31P MAS NMR, and solution multinuclear NMR (1H, 13C(1H,) 31P(1H)) spectroscopies. 13C CP MAS NMR experiments were carried out on arylphosphonates 1 and 4. Solution NMR experiments were also used to investigate the exchange reaction between 1 and 2 and the conversion of 5 to [Ti4(mu 3-O)(OiPr)5(mu-OiPr)3(tBuPO3)3].iPrOH by partial hydrolysis in the presence of Ti(OiPr)4. The phosphonate clusters 1-5 are soluble in organic solvents and are likely intermediates in the sol-gel processing of inorganic-organic hybrids based on titanium oxide and phosphonate groups that we are currently developing.
Collapse
Affiliation(s)
- M Mehring
- UMR CNRS 5637, Chimie Moléculaire et Organisation du Solide, Case 007, Université de Montpellier II, 34095 Montpellier, France
| | | | | | | | | |
Collapse
|
33
|
Guzyr OI, Siefken R, Chakraborty D, Roesky HW, Teichert M. Synthesis and structure of organic-soluble binuclear molecular phosphonates of tantalum, molybdenum, and tungsten. Inorg Chem 2000; 39:1680-3. [PMID: 12526554 DOI: 10.1021/ic990966f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of (eta 5-C5Me5)TaMe4 with tert-butylphosphonic acid leads to the formation of a mixture of compounds: [[(eta 5-C5Me5)TaMe][t-BuP(O)(OH)][t-BuP(O)(OH)2]]2(t-BuPO3)2 (1) and [[(eta 5-C5Me5)Ta][t-BuP(O)(OH)2]]2(t-BuPO3)2(mu-O)2 (2). Compound 2 was also obtained by recrystallization of 1 from a THF/hexane mixture. Reaction of (eta 5-C5Me5)MCl4 (M = Mo, W) with PhP(O)(OH)2 yields the binuclear phosphonates [[(eta 5-C5Me5)M][PhP(O)(OH)2]]2(PhPO3)2(mu-O)2 (M = Mo (3); M = W (4)). Compounds 2.THF and 3(.)2.5THF were characterized by single-crystal X-ray studies. The tantalum and molybdenum phosphonates 2.THF and 3(.)2.5THF have different structures as compared to those of the previously reported titanophosphonate cages.
Collapse
Affiliation(s)
- O I Guzyr
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | | | | | | | | |
Collapse
|
34
|
Chakraborty D, Chandrasekhar V, Bhattacharjee M, Krätzner R, Roesky HW, Noltemeyer M, Schmidt HG. Metal alkoxides as versatile precursors for group 4 phosphonates: synthesis and X-ray structure of a novel organosoluble zirconium phosphonate. Inorg Chem 2000; 39:23-6. [PMID: 11229026 DOI: 10.1021/ic9907361] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactions of Ph2P(O)(OH) and t-BuP(O)(OSiMe3)(OH) with Ti(O-i-Pr)4 in equimolar ratios gave titanium phosphonates of the type [(O-i-Pr)3Ti(mu-O)2PR1R2]2 (1, R1 = R2 = Ph; 2, R1 = t-Bu, R2 = OSiMe3) as colorless crystalline solids in moderate yields. Reactions of Ph2P(O)(OH) and the isopropoxides of zirconium and hafnium resulted in products of the composition [(O-i-Pr)3M(mu-O-i-Pr)2(mu-OPOPh2)M(O-i-Pr)2]Ph2P(O)(OH) (M = Zr (3), Hf (4)) in high yields. The compounds were characterized by 1H, 31P, and 29Si NMR, infrared (IR), and mass spectroscopic (MS) techniques. The molecular structures of 2 and 3 were confirmed by X-ray crystallography.
Collapse
Affiliation(s)
- D Chakraborty
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | | | | | | | | | | | | |
Collapse
|
35
|
Deemie RW, Rao M, Knight D. An organometallic sol–gel route to layered zinc phenylphosphonate and encapsulation studies with η6-(C6H6)Cr(CO)3. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00209-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
36
|
Walawalkar MG, Roesky HW, Murugavel R. Molecular Phosphonate Cages: Model Compounds and Starting Materials for Phosphate Materials. Acc Chem Res 1998. [DOI: 10.1021/ar980040w] [Citation(s) in RCA: 187] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mrinalini G. Walawalkar
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ramaswamy Murugavel
- Chemistry Department, Indian Institute of Technology, Powai, Bombay-400 076, India
| |
Collapse
|