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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
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2
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Abdelbaky MS, Amghouz Z, Blanco DM, García-Granda S, García JR. Crystal structure and characterization of a novel layered copper-lithium phosphonate with antiferromagnetic intrachain Cu(II)···Cu(II) interactions. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.01.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Somov NV, Chausov FF, Zakirova RM. Aqua{pentahydrogennitrilotris(methylenephosphonato)}lithium hydrate [Li(H2O){N(CH2PO3)3H5}] • H2O: Synthesis and structure. CRYSTALLOGR REP+ 2016. [DOI: 10.1134/s1063774516030263] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Ugandhar U, Baskar V. Monoorganoantimony(v) phosphonates and phosphoselininates. Dalton Trans 2016; 45:6269-74. [PMID: 26681514 DOI: 10.1039/c5dt03449c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular oxo-hydroxo clusters have been synthesized by reactions of arylstibonic acids with organophosphonic acid and phenylseleninic acid. Single crystal X-ray structural elucidation revealed the formation of [(p-i-PrC6H4Sb)4(OH)4(t-BuPO3)6] (1), [(p-t-BuC6H4Sb)4(O)2(PhPO3)4(PhPO3H)4] (2), [(p-i-PrC6H4Sb)4(O)3(OH)(PhSeO2)2(t-BuPO3)4(t-BuPO3H2)2] (3), [(p-MeC6H4Sb)4(O)3(OH)(PhSeO2)2(t-BuPO3)4(t-BuPO3H2)2] (4) and [(p-t-BuC6H4Sb)2(O) (PhSeO2)2(t-BuPO3H)4] (5) respectively. Mass spectral studies reveal that the clusters maintain their structural integrity in solution as well. Solution NMR studies ((1)H, (31)P and (77)Se) show spectral patterns which correlate well with the observed solid state structures of 1-5.
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Affiliation(s)
- Uppara Ugandhar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, A.P., India.
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Wolska-Pietkiewicz M, Świerkosz A, Justyniak I, Grala A, Sokołowski K, Lewiński J. Alkylzinc diorganophosphates: synthesis, structural diversity and unique ability to incorporate zincoxane units. Dalton Trans 2016; 45:18813-18816. [DOI: 10.1039/c6dt03324e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New tetrameric alkylzinc organophosphates of a drum-like structure and novel aggregates based on alkylzinc organophosphates with incorporated zincoxane units were synthesized and structurally characterized.
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Affiliation(s)
| | - Adam Świerkosz
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Iwona Justyniak
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Agnieszka Grala
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Kamil Sokołowski
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Janusz Lewiński
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
- Institute of Physical Chemistry
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6
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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
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Chandrasekhar V, Goura J, Gopal K, Liu J, Goddard P. Synthesis, structure and magnetism of the mixed-valent phosphonate cage, [MnIIMnIII12(μ4-O)6(μ-OH)6(O3P–t-Bu)10(OH2)2(DMF)4]·[2MeOH·4DMF]. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Chandrasekhar V, Goura J, Duthie A. Molecular Indium(III) Phosphonates Possessing Ring and Cage Structures. Synthesis and Structural Characterization of [In2(t-BuPO3H)4(phen)2Cl2] and [In3(C5H9PO3)2(C5H9PO3H)4(phen)3]·NO3·3.5H2O. Inorg Chem 2013; 52:4819-24. [DOI: 10.1021/ic3022485] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vadapalli Chandrasekhar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
- Centre for Interdisciplinary
Sciences, Tata Institute of Fundamental Research, 21 Brundavan Colony, Narsingi, Hyderabad 500075,
India
| | - Joydeb Goura
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Andrew Duthie
- School
of Life and Environmental Sciences, Deakin University, Geelong 3217, Australia
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Deb D, Duley S, Radenković S, Bultinck P, Chattaraj PK, Bhattacharjee M. Heterotrimetallic compounds containing Mo-M-Li [M = K, Rb and Cs] clusters: synthesis, structure, bonding, aromaticity and theoretical investigations of Li2M2 [M = K and Rb] and Cs4 rings. Phys Chem Chem Phys 2012; 14:15579-92. [PMID: 23076377 DOI: 10.1039/c2cp42105d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A new polydentate fac-trioxo molybdenum complex, [MoO(3)L](3-) {LH(3) = nitrilotriacetic acid}, has been synthesized by the reaction of lithium molybdate with iminodiacetic acid. The trinegative complex anion coordinates the alkali metal cations, K(+), Rb(+) or Cs(+). The potassium, rubidium and cesium complexes, [Li{K(H(2)O)(2)}MoO(3)L](n) (1), [Li{Rb(H(2)O)(2)}MoO(3)L](n) (2) and [Cs{Li(H(2)O)}(2)MoO(3)L](n) (3), form heterotrimetallic coordination chains, containing planar rings of Li(2)M(2) (M = K or Rb) and Cs(4). Theoretical investigations on these rings were carried out using NICS calculations and ab initio ring current maps, revealing aromaticity to be of limited significance.
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Affiliation(s)
- Dibakar Deb
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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Richards AF, Beavers CM. Synthesis and structures of a pentanuclear Al(iii) phosphonate cage, an In(iii) phosphonate polymer, and coordination compounds of the corresponding phosphonate ester with GaI3 and InCl3. Dalton Trans 2012; 41:11305-10. [DOI: 10.1039/c2dt31280h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Mermer A, Starynowicz P. Charge-density distribution in hydrogen methylphosphonates of calcium and lithium. ACTA CRYSTALLOGRAPHICA SECTION B: STRUCTURAL SCIENCE 2011; 67:399-408. [DOI: 10.1107/s0108768111030515] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 07/28/2011] [Indexed: 11/10/2022]
Abstract
Two new crystal structures, calcium bis(hydrogen methylphosphonate), Ca(CH3PO3H)2, and lithium hydrogen methylphosphonate, Li(CH3PO3H), have been obtained, and the experimental and theoretical charge densities, as well as their topological properties, are reported. Both compounds display layered structures. Each hydrogen methylphosphonate anion coordinates three metal cations in the calcium compound and four in the lithium one. Weak polarization of oxygen lone pairs is observed, with lithium showing somewhat stronger polarization strength than calcium. The reported topological properties from the density functional theory (DFT) and X-ray approach are consistent with each other. In both structures the P—O bonds have a significant share of ionic character. The hyperconjugation effects within the phosphonate group are quenched upon coordination of the metal cations.
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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
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13
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Deb D, Giri S, Chattaraj PK, Bhattacharjee M. Synthesis and Structure of a 3D Porous Network Containing Aromatic 1D Chains of Li6 Rings: Experimental and Computational Studies. J Phys Chem A 2010; 114:10871-7. [DOI: 10.1021/jp106028y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dibakar Deb
- Department of Chemistry and Center for Theoretical Studies, Indian Institute of Technology, Kharagpur 721 302, India
| | - Santanab Giri
- Department of Chemistry and Center for Theoretical Studies, Indian Institute of Technology, Kharagpur 721 302, India
| | - Pratim K. Chattaraj
- Department of Chemistry and Center for Theoretical Studies, Indian Institute of Technology, Kharagpur 721 302, India
| | - Manish Bhattacharjee
- Department of Chemistry and Center for Theoretical Studies, Indian Institute of Technology, Kharagpur 721 302, India
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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]
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15
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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]
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16
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Khatua S, Roy DR, Bultinck P, Bhattacharjee M, Chattaraj PK. Aromaticity in cyclic alkali clusters. Phys Chem Chem Phys 2008; 10:2461-74. [DOI: 10.1039/b718176k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Khatua S, Roy DR, Chattaraj PK, Bhattacharjee M. Synthesis and structure of 1-D Na6cluster chain with short Na–Na distance: Organic like aromaticity in inorganic metal cluster. Chem Commun (Camb) 2007:135-7. [PMID: 17180224 DOI: 10.1039/b611693k] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique 1-D chain of sodium cluster containing (Na6) rings stabilized by a molybdenum containing metalloligand has been synthesized and characterized and the DFT calculations show striking resemblance in their aromatic behaviour with the corresponding hydrocarbon analogues.
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Wu J, Song Y, Zhang E, Hou H, Fan Y, Zhu Y. Studies on Cage-Type Tetranuclear Metal Clusters with Ferrocenylphosphonate Ligands. Chemistry 2006; 12:5823-31. [PMID: 16721869 DOI: 10.1002/chem.200500905] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Reaction of FcCH(2)PO(3)H(2) [Fc=(eta(5)-C(5)H(5))Fe(eta(5)-C(5)H(4))] (H(2)FMPA) and 1,10-phenanthroline (phen) with Cd(OAc)(2).2 H(2)O or ZnSO(4).7 H(2)O in methanol in the presence of triethylamine resulted in the formation of two new ferrocenylphosphonate metal-cage complexes [M(4)(fmpa)(4)(phen)(4)] 7 CH(3)OH (M=Cd 1, M=Zn 2). Both structures contain two kinds of isomeric tetranuclear metal phosphonate cages, which are linked to one another by pi-pi interactions between the phen molecules. In 1, the Cd1, Cd3, and Cd4 atoms are all pentacoordinate, while the Cd2 atom is coordinated by four oxygen atoms from three phosphonate ligands and two nitrogen atoms from the chelating phen in a distorted octahedral geometry. Four Cd atoms from each unit are interconnected through bridging phosphonate ligands with different coordination modes, such as 5.221, 4.211, and 2.11 (Harris notation), yielding a {Cd(4)} cage. In 2, each Zn atom is coordinated by three oxygen atoms from three phosphonate ligands and two nitrogen atoms from phen, leading to a distorted square-pyramidal geometry. The four Zn atoms of each isomeric unit are also interconnected through four bridging phosphonate ligands to yield a {Zn(4)} cage. Fluorescent studies indicate that ligand-to-ligand charge-transfer photoluminescence is observed for 1, while the emission bands of 2 can be assigned to an admixture of ligand-to-ligand and metal-to-ligand charge transfer. Solution-state differential pulse voltammetry indicates that the half-wave potentials of the ferrocenyl moieties in 1 and 2 have different deviations relative to the relevant H(2)FMPA ligand. This may be because the highest occupied molecular orbital (HOMO) in 1 is located in the FMPA(2-) groups, while in 2 the HOMO is located in the phen and Zn(II) groups, so the Fe(II) centers in complex 1 are more easily oxidized to Fe(III) centers than those of 2. The third-order nonlinear optical (NLO) measurements show that both 1 and 2 exhibit strong third-order NLO self-focusing effects; hence, they are promising candidates for NLO materials. By calculating the component of the lowest unoccupied molecular orbitals of 1 and 2, we confirmed that the co-planar phen rings control their optical nonlinearity, while the H(2)FMPA ligands and metal ions have only a weak influence on their NLO properties.
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Affiliation(s)
- Jie Wu
- Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, China
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Chandrasekhar V, Boomishankar R, Sasikumar P, Nagarajan L, Cordes AW. Mononuclear Metal Phosphinates with Ancillary Pyrazole Ligands. Synthesis and X-ray Crystal Structures of [M(Ph2PO2)2(3,5-DMPZ)2] (M = Co, Zn). Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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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]
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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: 247] [Impact Index Per Article: 12.4] [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.
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Affiliation(s)
- R Murugavel
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400 076, India
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Walawalkar MG. A Rare Lithium Indium Siloxane: Synthesis and Crystal Structure of [InMe{(OPh2Si)2O}2-μ-{Li(THF)2}2]. Organometallics 2003. [DOI: 10.1021/om0209172] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Imido analogs of aluminophosphates: syntheses and X-ray structures of {LiAl[OP(NtBu)2(NHtBu)]2}2 and the mono- and di-methylaluminum complexes of the anions [OP(NtBu)x(NHtBu)3−x]x− (x=1, 2). J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(01)01100-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Dolbecq A, du PC, Auberty AL, Mason SA, Barboux P, Marrot J, Cadot E, Sécheresse F. Synthesis, X-ray and neutron diffraction characterization, and ionic conduction properties of a new oxothiomolybdate Li3[Mo8S8O8(OH)8[HWO5(H2O)]] x 18H2O. Chemistry 2002; 8:349-56. [PMID: 11843146 DOI: 10.1002/1521-3765(20020118)8:2<349::aid-chem349>3.0.co;2-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The new oxothiomolybdate anion [Mo8S8O8(OH)8[HWO5(H2O)]]3- (denoted HMo8W3-) has been synthesized in aqueous solution by an acido-basic condensation reaction. Four (Mo(V)2S2O2) building blocks are connected through hydroxo bridges around a central [W(VI)O6] octahedron. X-ray and neutron diffraction studies have been performed on single crystals of the lithium salt Li3[Mo8S8O8(OH)8[HWO5(H2O)]] x 18H2O (Li3HMo8W x 18H2O) in an aqueous grown from HMo8W3- solution of LiCl (1 M). The neutron diffraction experiment enabled us to locate both the protons and the lithium ions. In the structure of Li3HMo8W x 18H20, ring-shaped anions interleaved by a cluster of disordered hydrogen-bonded water molecules stack on top of each other along lithium pillars. The lithium columns are formed by alternating edge-sharing octahedra and tetrahedra, with one lithium site in four being totally vacant. Ionic conductivity measurements on pressed pellets have shown that Li3HMo8W x 18H2O is a good ionic conductor at room temperature (sigma = 10(-5) S cm(-1)), but the ionic conductivity on single crystals is smaller by two orders of magnitude and is isotropic; this suggests the main path of conduction involves surface protons rather than lithium ions of the bulk.
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Affiliation(s)
- Anne Dolbecq
- Institut Lavoisier, IREM, UMR 8637, Université de Versailles Saint-Quentin, Versailles, France.
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Linton DJ, Schooler P, Wheatley AE. Group 12 and heavier Group 13 alkali metal 'ate complexes. Coord Chem Rev 2001. [DOI: 10.1016/s0010-8545(01)00379-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Mason MR, Perkins AM, Ponomarova VV, Vij A. Acac-Promoted Rearrangement of an Alkylaluminophosphonate Tetramer to a Decamer. Organometallics 2001. [DOI: 10.1021/om010432y] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark R. Mason
- Department of Chemistry, University of Toledo, Toledo, Ohio 43606, Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, and Department of Chemistry, University of Idaho, Moscow, Idaho 83844
| | - Alisa M. Perkins
- Department of Chemistry, University of Toledo, Toledo, Ohio 43606, Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, and Department of Chemistry, University of Idaho, Moscow, Idaho 83844
| | - Vira V. Ponomarova
- Department of Chemistry, University of Toledo, Toledo, Ohio 43606, Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, and Department of Chemistry, University of Idaho, Moscow, Idaho 83844
| | - Ashwani Vij
- Department of Chemistry, University of Toledo, Toledo, Ohio 43606, Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, and Department of Chemistry, University of Idaho, Moscow, Idaho 83844
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Murugavel R, Walawalkar MG, Prabusankar G, Davis P. Synthesis and Structure of a Novel Lithium Gallosiloxane Containing a Ga4Si4O8 Macrocycle Analogous to the S8R Building Unit of Zeolites. Organometallics 2001. [DOI: 10.1021/om0100636] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of TechnologyBombay, Powai, Mumbai-400 076, India
| | | | - Ganesan Prabusankar
- Department of Chemistry, Indian Institute of TechnologyBombay, Powai, Mumbai-400 076, India
| | - Paul Davis
- Department of Chemistry, Indian Institute of TechnologyBombay, Powai, Mumbai-400 076, India
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Chakraborty D, Horchler S, Krätzner R, Varkey SP, Pinkas J, Roesky HW, Usón I, Noltemeyer M, Schmidt HG. Synthesis and Structural Characterization of Functionalized Dimeric Aluminophosphonates and a Monomeric Gallophosphonate Anion. Inorg Chem 2001; 40:2620-4. [PMID: 11350243 DOI: 10.1021/ic000797v] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reaction of t-BuP(O)(OSiMe(3))(OH) with Me(3)Al leads to the formation of [Me(2)Al(mu-O)(2)P(OSiMe(3))(t-Bu)](2) (1) whereas Me(2)AlCl reacts with Ph(2)P(O)(OH) to yield [(Cl)(Me)Al(mu-O)(2)PPh(2)](2) (2). These compounds represent the first examples of functionalized dimeric four-ring type aluminophosphonate systems. The double four-ring type gallophosphonate, namely, [t-BuPO(3)GaMe](4), reacts with n-Bu(4)NHF(2) under ambient conditions, resulting in the formation of a monomeric gallophosphonate [n-Bu(4)N][MeGa[t-BuPO(2)(OH)](3)] (3). These derivatives have been adequately characterized using various spectroscopic techniques and X-ray diffraction studies.
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Affiliation(s)
- D Chakraborty
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Roesky HW, Walawalkar MG, Murugavel R. Is water a friend or foe in organometallic chemistry? The case of group 13 organometallic compounds. Acc Chem Res 2001; 34:201-11. [PMID: 11263878 DOI: 10.1021/ar0001158] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This Account summarizes the recent developments in the hydrolysis chemistry of Group 13 trialkyl and triaryl compounds. Emphasis has been placed on the results obtained by us on (a) 1H NMR investigations of controlled hydrolyses of AlMes3 and GaMes3, (b) low-temperature isolation of water adducts of triaryl compounds of aluminum and gallium, (c) synthesis and structural characterization of new polyhedral alumoxanes and galloxanes, and (d) the search for an easy way to synthesize well-defined crystalline methylalumoxanes by deprotonation of the hydroxides with alkyllithium reagents. The systematic studies on the hydrolysis of tBu3Al carried out by Barron et al. are also discussed in order to elucidate the roles of (i) reaction temperature, (ii) solvent medium, and (iii) source of water molecules, in building up hitherto unknown alumoxane clusters. The role of water impurity in organometallic reactions involving a Group 13 alkyl and other ligands (such as silanetriols and phosphorus acids) to build molecular clusters has also been discussed.
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Affiliation(s)
- H W Roesky
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
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Grohol D, Gingl F, Clearfield A. Syntheses and Crystal Structures of a Linear-Chain Uranyl Phenylphosphinate UO(2)(O(2)PHC(6)H(5))(2) and Layered Uranyl Methylphosphonate UO(2)(O(3)PCH(3)). Inorg Chem 1999; 38:751-756. [PMID: 11670842 DOI: 10.1021/ic9809761] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two extended uranyl organophosphorus compounds have been synthesized and structurally characterized. Linear-chain uranyl bis(phenylphosphinate), UO(2)(O(2)PHC(6)H(5))(2), was synthesized at 60 degrees C, and its structure was solved by single-crystal methods. UO(2)(O(2)PHC(6)H(5))(2) crystallizes in the triclinic space group P&onemacr; with unit cell parameters a = 5.648(1) Å, b = 8.115(2) Å, c = 9.171(2) Å, alpha = 64.97(3) degrees, beta = 80.59(3) degrees, gamma = 83.34(3) degrees, and Z = 1. The geometry of the uranium atom is tetragonal bipyramidal, and the neighboring uranyl ions are bridged by pairs of phenylphosphinate anions. The phenyl groups form two rows pointing in opposite directions of each chain, and neighboring chains arrange in a staircase fashion. Layered uranyl methylphosphonate, UO(2)(O(3)PCH(3)) (UPMe), was synthesized hydrothermally at 200 degrees C, and its structure was solved by powder pattern X-ray methods and refined by the Rietveld method. UPMe crystallizes in space group P&onemacr; with unit cell parameters a = 6.4027(3) Å, b = 6.6912(3) Å, c = 7.0983(3) Å, alpha = 90.473(2) degrees, beta = 99.684(2) degrees, gamma = 97.333(2) degrees, and Z = 2. The uranyl ions, connected by the phosphonate anions, form parallel inorganic layers, and the methyl groups point perpendicularly between the layers.
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Affiliation(s)
- Daniel Grohol
- Department of Chemistry, Texas A&M University, P.O. Box 300012, College Station, Texas 77842-3012
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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
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Yang Y, Pinkas J, Schäfer M, Roesky HW. Ein molekulares Modell für Alumophosphate mit Fluorid als strukturdirigierendem und mineralisierendem Agens. Angew Chem Int Ed Engl 1998. [DOI: 10.1002/(sici)1521-3757(19981002)110:19<2795::aid-ange2795>3.0.co;2-l] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mason MR, Perkins AM, Matthews RM, Fisher JD, Mashuta MS, Vij A. Synthesis and Characterization of Dimeric, Trimeric, and Tetrameric Gallophosphonates and Gallophosphates. Inorg Chem 1998; 37:3734-3746. [PMID: 11670473 DOI: 10.1021/ic980132h] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
THF/toluene solutions of phosphonic or phosphoric acids were reacted with (t)Bu(3)Ga at low temperature to yield the cyclic dimers [(t)Bu(2)GaO(2)P(OH)R](2) (R = Ph, Me, (t)Bu, H, OH; 1-5). Poor crystallinity and variable thermal stabilities of 1-5 necessitated derivatization with Me(3)SiNMe(2) to yield [(t)Bu(2)GaO(2)P(OSiMe(3))R](2) (R = Ph, Me, (t)Bu, H, OSiMe(3); 6-10), which were more amenable to purification and characterization. In solution, trans isomers were predominant for 6 and 7 at ambient temperature, whereas the cis isomer of 8 was predominant. NMR spectroscopy demonstrated cis-trans interconversion for 6-8 and crossover experiments showed interconversion to occur by, or be accompanied with, an intermolecular exchange process. Thermolysis of 3 in refluxing toluene yielded the cluster [((t)BuGa)(2)((t)Bu(2)Ga)(O(3)P(t)Bu)(2){O(2)P(OH)(t)Bu}] (11), which was converted to [((t)BuGa)(2)((t)Bu(2)Ga)(O(3)P(t)Bu)(2){O(2)P(OSiMe(3))(t)Bu}] (12) with Me(3)SiNMe(2). Thermolysis of 1-3 in refluxing diglyme, or solid-state pyrolysis at 250 degrees C in vacuo, yielded [(t)BuGaO(3)PR](4) (R = Ph, (t)Bu, Me; 13-15). The gallophosphate [(t)BuGaO(3)P(OSiMe(3))](4) (16) was similarly obtained by reaction of (t)Bu(3)Ga with H(3)PO(4) in refluxing diglyme, followed by trimethylsilylation with Me(3)SiNMe(2). Compounds 13-16 possess cuboidal Ga(4)P(4)O(12) cores analogous to double-four-ring secondary building units in the gallophosphates cloverite, gallophosphate-A, and ULM-5. The thermal, hydrolytic, and oxidative stabilities of 13-16 are discussed, as are observed intermolecular exchange processes. In addition to characterization of 1-16 by multinuclear ((1)H, (13)C, (31)P) NMR spectroscopy, infrared spectroscopy, mass spectrometry, and elemental analysis, molecular structures for compounds 6, 8, 10, 12, 14, 15, and 16 were determined by X-ray crystallography.
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Affiliation(s)
- Mark R. Mason
- Department of Chemistry and Center for Chemical Catalysis, University of Louisville, Louisville, Kentucky 40292, and Department of Chemistry, University of Idaho, Moscow, Idaho 83844
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Walawalkar MG, Horchler S, Dietrich S, Chakraborty D, Roesky HW, Schäfer M, Schmidt HG, Sheldrick GM, Murugavel R. Novel Organic-Soluble Molecular Titanophosphonates with Cage Structures Comparable to Titanium-Containing Silicates. Organometallics 1998. [DOI: 10.1021/om971045k] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mrinalini G. Walawalkar
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sabine Horchler
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Stefan Dietrich
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Debashis Chakraborty
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Martina Schäfer
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Hans-Georg Schmidt
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - George M. Sheldrick
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ramaswamy Murugavel
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Walawalkar MG, Murugavel R, Roesky HW, Usón I, Kraetzner R. Gallophosphonates Containing Alkali Metal Ions. 2.(1) Synthesis and Structure of Gallophosphonates Incorporating Na(+) and K(+) Ions. Inorg Chem 1998; 37:473-478. [PMID: 11670297 DOI: 10.1021/ic971441v] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions between t-BuP(O)(OH)(2) and equimolar quantities of MGaMe(4) (M = Na, K) yield ionic and alkali metal containing molecular gallophosphonates [Na(4)(&mgr;(2)-OH(2))(2)(THF)(2)][(Me(2)GaO(3)PBu-t)(2)](2).2THF (2) and [K(THF)(6)][K(5)(THF)(2){(Me(2)GaO(3)PBu-t)(2)}(3)] (3), respectively. Compounds 2 and 3are soluble in common organic solvents and have been characterized by means of analytical and spectroscopic techniques, as well as by single-crystal X-ray diffraction studies. These compounds represent the rare examples of molecular ionic phosphonate cages which contain coordinated Na(+) or K(+) ions. Compound 2 is constructed from two eight-membered Ga(2)O(4)P(2) gallium phosphonate rings which sandwich a central Na(4)(H(2)O)(2) unit. In the case of 3, three eight-membered Ga(2)O(4)P(2) gallium phosphonate units envelope an aggregated K(5) core which exists in the form of a trigonal-bipyramidal polyhedron. The Na(+) and K(+) ions in 2 and 3 are also coordinated by the endocyclic oxygen atoms of the eight-membered gallophosphonate crowns, apart from the regular exocyclic P-O coordination. Unlike the lithium gallophosphonate [Li(4)(THF)(4)][{(MeGaO(3)PBu-t)(3)(&mgr;(3)-O(2))}(2)] (1), compounds 2 and 3 do not undergo any clean cage conversion reaction in the presence of 15-crown-5 and 18-crown-6, respectively.
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Affiliation(s)
- Mrinalini G. Walawalkar
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Yang Y, Walawalkar M, Pinkas J, Roesky H, Schmidt HG. Molekulares Aluminophosphonat: isotype Modellverbindung für die sekundäre Doppel-6-Ring(D6R)-Baueinheit von Zeolithen. Angew Chem Int Ed Engl 1998. [DOI: 10.1002/(sici)1521-3757(19980116)110:1/2<101::aid-ange101>3.0.co;2-r] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Walawalkar MG, Murugavel R, Roesky HW, Schmidt HG. Syntheses, Spectroscopy, Structures, and Reactivity of Neutral Cubic Group 13 Molecular Phosphonates. Inorg Chem 1997. [DOI: 10.1021/ic970346j] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mrinalini G. Walawalkar
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ramaswamy Murugavel
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Hans-Georg Schmidt
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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