Transformation of tri-titanium(IV)-substituted α-keggin polyoxometalate (POM) into tetra-titanium(IV)-substituted POMs: Reaction products of titanium(IV) sulfate with the dimeric keggin POM precursor under acidic conditions

Materials

Volumn 3, Issue 1, 2010, Pages 503-518

  Mouri, Yuki ^a   Sakai, Yoshitaka ^a   Kobayashi, Yoshitaka ^a   Yoshida, Shoko ^a   Nomiya, Kenji ^a  

^a KANAGAWA UNIVERSITY   (Japan)

Author keywords

Host guest chemistry; Keggin polyoxometalate (POM); Sulfate coordination; Three host four guest coordination; Ti O Ti Bonding Dimer; Titanium(IV) Substitution

Indexed keywords

ACIDIC CONDITIONS; DIMERIC SPECIES; HOSTGUEST CHEMISTRY; KEGGIN POLYOXOMETALATE; OXIDE CLUSTERS; SULFATE COORDINATION; THREE HOST-FOUR GUEST COORDINATION; TITANIUM ATOMS;

CHEMICAL BONDS; DIMERS; OXIDES; REACTION PRODUCTS; SULFUR COMPOUNDS; TITANIUM OXIDES;

TITANIUM;

EID: 78650893362     PISSN: None     EISSN: 19961944     Source Type: Journal    
DOI: 10.3390/ma3010503     Document Type: Article

References (29)

1. Pope, M.T.; Müller, A. Polyoxometalate chemistry: An old field with new dimensions in several disciplines. Angew. Chem. Int. Ed. Engl. 1991, 30, 34-48.
2. Pope, M.T. Heteropoly and Isopoly Oxometalates; Springer-Verlag: New York, NY, USA, 1983.
3. Day, V.W.; Klemperer, W.G. Metal oxide chemistry in solution: The early transition metal polyoxoanions. Science 1985, 228, 533-541.
4. Hill, C.L. Introduction: Polyoxometalates-multicomponent molecular vehicles to probe fundamental issues and practical problems. Chem. Rev. 1998, 98, 1-2.
5. Okuhara, T.; Mizuno, N.; Misono, M. Catalytic chemistry of heteropoly compounds. Adv. Catal. 1996, 41, 113-252.
6. Hill, C.L.; Prosser-McCartha, C.M. Homogeneous catalysis by transition-metal oxygen anion clusters. Coord. Chem. Rev. 1995, 143, 407-455.
7. Pope, M.T. Polyoxo anions: Synthesis and structure. In Comprehensive Coordination Chemistry II; Wedd, A.G., Ed.; Elsevier Science: New York, NY, USA, 2004; Volume 4, pp. 635-678.
8. Hill, C.L. Polyoxometalates: Reactivity. In Comprehensive Coordination Chemistry II; Wedd, A.G., Ed.; Elsevier Science: New York, NY, USA, 2004; Volume 4, pp. 679-759.
9. Lin, Y.; Weakley, T.J.R.; Rapko, B.; Finke, R.G. Polyoxoanions derived from A-β-SiW9O34 10-: Synthesis, single-crystal structural determination, and solution structural characterization by 183W NMR and IR of A-β-Si2W18Ti6O77 14-. Inorg. Chem. 1993, 32, 5095-5101.
10. Yamase, T.; Ozeki, T.; Sakamoto, H.; Nishiya, S.; Yamamoto, A. Structure of hexatitanooctadecatungstodigermanate. Bull. Chem. Soc. Jpn. 1993, 66, 103-108.
11. Yamase, T.; Cao, X.O.; Yazaki, S. Structure of double Keggin-Ti/W-mixed polyanion [(A-β-GeTi3W9O37)2O3]14- and multielectron-transfer-based photocatalyic H2-generation. J. Mol. Catal., A Chem. 2007, 262, 119-127.
12. Nomiya, K.; Takahashi, M.; Ohsawa, K.; Widegren, J.A. Synthesis and characterization of trititanium(IV)-1,2,3-substituted α-Keggin polyoxotungstates with heteroatoms P and Si. Crystal structure of the dimeric, Ti-O-Ti bridged anhydride form K10H2[α,α-P2W18Ti6O77]·17H2O and confirmation of dimeric forms in aqueous solution by ultracentrifugation molecular weight measurements. J. Chem. Soc. Dalton Trans. 2001, 2872-2878.
13. Nomiya, K.; Takahashi, M.; Widegren, J.A.; Aizawa, T.; Sakai, Y.; Kasuga, N.C. Synthesis and pH-variable ultracentrifugation molecular weight measurements of the dimeric, Ti-O-Ti bridged anhydride form of a novel di-TiIV-1,2-substituted α-Keggin polyoxotungstate. Molecular structure of the [(α-1,2-PW10Ti2O39)2]10- polyoxoanion. J. Chem. Soc. Dalton Trans. 2002, 3679-3685.
14. Goto, Y.; Kamata, K.; Yamaguchi, K.; Uehara, K.; Hikichi, S.; Mizuno, N. Synthesis, structural characterization, and catalytic performance of dititanium-substituted γ-Keggin silicotungstate. Inorg. Chem. 2006, 45, 2347-2356.
15. Tan, R.X.; Li, D.L.; Wu, H.B.; Zhang, C.L.; Wang, X.H. Synthesis and structure of dititaniumcontaining 10-tungstogermanate [{γ-GeTi2W10O36(OH)2}2(μ-O)2]8-. Inorg. Chem. Commun. 2008, 11, 835-836.
16. Hussain, F.; Bassil, B.S.; Bi, L.H.; Reicke, M.; Kortz, U. Structural control on the nanomolecular scale: Self-assembly of the polyoxotungstate wheel [{β-Ti2SiW10O39}]24-. Angew. Chem. Int. Ed. 2004, 43, 3485-3488.
17. Al-Kadamany, G.A.; Hussain, F.; Mal, S.S.; Dickman, M.H.; Leclerc-Laronze, N.; Marrot, J.; Cadot, E.; Kortz, U. Cyclic Ti9 Keggin trimers with tetrahedral (PO4) or octahedral (TiO6) capping groups. Inorg. Chem. 2008, 47, 8574-8576.
18. Ren, Y.H.; Liu, S.X.; Cao, R.G.; Zhao, X.Y.; Cao, J.F.; Gao, C.Y. Two trimeric tri-TiIVsubstituted Keggin tungstogermanates based on tetrahedral linkers. Inorg. Chem. Commun. 2008, 11, 1320-1322.
19. Kato, C.N.; Negishi, S.; Yoshida, K.; Hayashi, K.; Nomiya, K. The strong influence of structures around titanium centers in dimeric mono-, di-, and tri-titanium(IV)-substituted Keggin polyoxotungstates on the catalytic epoxidation of alkenes with H2O2. Appl. Catal. A Gen. 2005, 292, 97-104.
20. Hill, C.L., Ed. A series of 34 papers in a volume devoted to polyoxoanions in catalysis. J. Mol. Catal. A Chem. 1996, 114, 1-359.
21. Hill, C.L., Ed. A series of 32 recent papers in a volume devoted to Polyoxometalates in Catalysis. J. Mol. Catal. A Chem. 2007, 262, 1-242.
22. Hayashi, K.; Murakami, H.; Nomiya, K. Novel Ti-O-Ti bonding species constructed in a metaloxide cluster: Reaction products of bis(oxalato)oxotitanate(IV) with the dimeric, 1,2-dititanium(IV)-substituted Keggin polyoxotungstate. Inorg. Chem. 2006, 45, 8078-8085.
23. Hayashi, K.; Takahashi, M.; Nomiya, K. Ti-O-Ti bonding species constructed in a metal-oxide cluster. Dalton Trans. 2005, 3751-3756.
24. Sheldrick, G.M. Phase annealing in SHELX-90: Direct methods for larger structures. Acta Crystallogr. Sect. A 1990, 46, 467-473.
25. Sheldrick, G.M. SHELXL-97 Program for Crystal Structure Refinement; University of Gottingen: Gottingen, Germany, 1997.
26. Sheldrick, G.M. SADABS; University of Gottingen: Gottingen, Germany, 1996.
27. Thouvenot, R.; Fournier, M.; Franck, R.; Rocchiccioli-Deltcheff, C. Vibrational investigations of polyoxometalates. 3. Isomerism in molybdenum(VI) and tungsten(VI) compounds related to the Keggin structure. Inorg. Chem. 1984, 23, 598-605.
28. Brown, I.D.; Shannon, R.D. Empirical bond-strength-bond-length curves for oxides. Acta Crystallogr., Sect. A 1973, 29, 266-282.
29. Brown, I.D. VALENCE: A program for calculating bond valences. J. Appl. Crystallogr. 1996, 29, 479-480.