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. [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
|
Gropp C, Ma T, Hanikel N, Yaghi OM. Design of higher valency in covalent organic frameworks. Science 2020; 370:370/6515/eabd6406. [DOI: 10.1126/science.abd6406] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/03/2020] [Indexed: 01/09/2023]
Affiliation(s)
- Cornelius Gropp
- Department of Chemistry, University of California–Berkeley, Berkeley, CA 94720, USA
- Kavli Energy Nanoscience Institute at UC Berkeley, Berkeley, CA 94720, USA
| | - Tianqiong Ma
- Department of Chemistry, University of California–Berkeley, Berkeley, CA 94720, USA
- Kavli Energy Nanoscience Institute at UC Berkeley, Berkeley, CA 94720, USA
| | - Nikita Hanikel
- Department of Chemistry, University of California–Berkeley, Berkeley, CA 94720, USA
- Kavli Energy Nanoscience Institute at UC Berkeley, Berkeley, CA 94720, USA
| | - Omar M. Yaghi
- Department of Chemistry, University of California–Berkeley, Berkeley, CA 94720, USA
- Kavli Energy Nanoscience Institute at UC Berkeley, Berkeley, CA 94720, USA
| |
Collapse
|
3
|
Sato N, Hayashi T, Tochigi K, Wada H, Shimojima A, Kuroda K. Synthesis of Organosilyl-Functionalized Cage-Type Germanoxanes Containing Fluoride Ions. Chemistry 2019; 25:7860-7865. [PMID: 30817031 DOI: 10.1002/chem.201900439] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Indexed: 11/10/2022]
Abstract
Eight corners of a double-four ring cage-type germanoxane, containing a fluoride ion, were successfully silylated by the combination of chlorosilanes and silazanes. Three different silyl groups, trimethylsilyl, dimethylsilyl, and dimethylvinylsilyl, were attached on the corners of germanoxane cage. The solubility and reactivity of the cage modified with dimethylvinylsilyl groups were significantly increased, allowing for further reaction. Hydrosilylation reaction between dimethylvinylsilylated cage geramanoxanes and dimethylsilylated cage siloxanes afforded porous solids. Functionalization of the corners of germanoxanes with silyl groups should provide valuable building blocks in various functional materials.
Collapse
Affiliation(s)
- Naoto Sato
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Taiki Hayashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Kazuma Tochigi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Hiroaki Wada
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.,Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
| |
Collapse
|
4
|
Doroshenko I, Babiak M, Buchholz A, Görls H, Plass W, Pinkas J. New molecular heptanuclear cobalt phosphonates: synthesis, structures and magnetic properties. NEW J CHEM 2018. [DOI: 10.1039/c8nj00902c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Synthesis, structures and magnetic properties (strong anisotropy, ferromagnetic and antiferromagnetic interactions) of novel {Co7} homoleptic molecular cobalt phosphonates with a similar structure motif are described.
Collapse
Affiliation(s)
- Iaroslav Doroshenko
- Department of Chemistry
- Masaryk University
- CZ-61137 Brno
- Czech Republic
- CEITEC MU
| | - Michal Babiak
- Department of Chemistry
- Masaryk University
- CZ-61137 Brno
- Czech Republic
- CEITEC MU
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | - Jiri Pinkas
- Department of Chemistry
- Masaryk University
- CZ-61137 Brno
- Czech Republic
- CEITEC MU
| |
Collapse
|
5
|
Zapico J, Shirai M, Sugiura R, Idota N, Fueno H, Tanaka K, Sugahara Y. Borophosphonate Cages as Element-blocks: Ab Initio Calculation of the Electronic Structure of a Simple Borophosphonate, [HPO3BH]4, and Synthesis of Two Novel Borophosphonate Cages with Polymerizable Groups. CHEM LETT 2017. [DOI: 10.1246/cl.160913] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
6
|
Wei J, Shen Z, Filatov AS, Liu Q, Jordan RF. Self-Assembled Cage Structures and Ethylene Polymerization Behavior of Palladium Alkyl Complexes That Contain Phosphine-Bis(arenesulfonate) Ligands. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00629] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jia Wei
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Zhongliang Shen
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Alexander S. Filatov
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - 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
|
7
|
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.
Collapse
Affiliation(s)
- Uppara Ugandhar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, A.P., India.
| | | |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Kather R, Rychagova E, Sanz Camacho P, Ashbrook SE, Woollins JD, Robben L, Lork E, Ketkov S, Beckmann J. Increasing the Brønsted acidity of Ph2PO2H by the Lewis acid B(C6F5)3. Formation of an eight-membered boraphosphinate ring [Ph2POB(C6F5)2O]2. Chem Commun (Camb) 2016; 52:10992-5. [DOI: 10.1039/c6cc06102h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong acid (C6F5)3BOPPh2OH, was prepared in situ by the reaction of the rather weak Brønsted acid Ph2PO2H with the strong Lewis acid B(C6F5)3.
Collapse
Affiliation(s)
- Ralf Kather
- Institut of Inorganic Chemistry and Crystallography
- Bremen University
- 28359 Bremen
- Germany
| | - Elena Rychagova
- G. A. Razuvaev Institute of Organometallic Chemistry RAS
- 603950 Nizhny Novgorod
- Russian Federation
| | | | | | - J. Derek Woollins
- EaStChem. School of Chemistry
- University of St. Andrews
- Fife KY16 9ST
- UK
| | - Lars Robben
- Institut of Inorganic Chemistry and Crystallography
- Bremen University
- 28359 Bremen
- Germany
| | - Enno Lork
- Institut of Inorganic Chemistry and Crystallography
- Bremen University
- 28359 Bremen
- Germany
| | - Sergey Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry RAS
- 603950 Nizhny Novgorod
- Russian Federation
- N. I. Lobachevsky Nizhny Novgorod State University
- 603950 Nizhny Novgorod
| | - Jens Beckmann
- Institut of Inorganic Chemistry and Crystallography
- Bremen University
- 28359 Bremen
- Germany
| |
Collapse
|
10
|
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
|
11
|
Dar AA, Mallick A, Murugavel R. Synthetic strategies to achieve further-functionalised monoaryl phosphate primary building units: crystal structures and solid-state aggregation behavior. NEW J CHEM 2015. [DOI: 10.1039/c4nj01614a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a new class of functionalized organophosphates, potential building units in materials and zeolite chemistry, has been reported.
Collapse
Affiliation(s)
- Aijaz A. Dar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Abhijit Mallick
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Ramaswamy Murugavel
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| |
Collapse
|
12
|
Liu Q, Contrella ND, Filatov AS, Jordan RF. Synthesis of Borophosphonate Cage Compounds: Influence of Substituent and Concentration Effects on Product Distribution in Condensation Reactions of Aryl Phosphonic Acids and Boronic Acids. Organometallics 2014. [DOI: 10.1021/om501101q] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qian Liu
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Nathan D. Contrella
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Alexander S. Filatov
- 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
|
13
|
Goura J, Bag P, Mereacre V, Powell AK, Chandrasekhar V. Molecular Iron(III) Phosphonates: Synthesis, Structure, Magnetism, and Mössbauer Studies. Inorg Chem 2014; 53:8147-54. [DOI: 10.1021/ic5012154] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Joydeb Goura
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Prasenjit Bag
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Valeriu Mereacre
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse
15, 76128 Karlsruhe, Germany
| | - Annie K. Powell
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse
15, 76128 Karlsruhe, Germany
| | - Vadapalli Chandrasekhar
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
- National Institute of Science Education and Research, Institute of Physics
Campus, Sachivalaya Marg, Sainik School, Bhubaneswar, Orissa 751 005, India
| |
Collapse
|
14
|
Kořenková M, Mairychová B, Růžička A, Jambor R, Dostál L. Synthesis of heteroboroxines with MB₂O₃ core (M = Sb, Bi, Sn)--an influence of the substitution of parent boronic acids. Dalton Trans 2014; 43:7096-108. [PMID: 24671260 DOI: 10.1039/c3dt53012d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and structure of stiba-, stanna- and bismaheteroboroxines of a general formula L(E)M[(OBR)2O] supported by a N,C,N-chelating ligand L [where L = C6H3-2,6-(CH2NMe2)2, M, E = Sb, lone pair or Sn, Ph or Bi, lone pair] is reported. The target compounds are prepared by straightforward one-step reactions between oxides (LMO)2 (M = Sb or Bi) or organotin(iv) carbonate L(Ph)Sn(CO3) with four or two molar equivalents of corresponding organoboronic acid. All compounds were characterized with the help of elemental analysis, multinuclear NMR spectroscopy and on several occasions the molecular structure was determined using single-crystal X-ray diffraction analysis. The influence of both the substitution of the parent organoboronic acid and the central atom used on the feasibility of the condensation reaction was addressed. Furthermore, several heteroboroxines containing nitrogen donor functionality (i.e. NH2, NMe2, CN or 4-pyridyl) included in the boronic acid residue were synthesized and characterized with the aim to prepare boroxine-based covalent frameworks (through intermolecular N→B interactions) containing metal atoms in their structures. Although no such intermolecular bonding was detected in solution of these compounds, it was shown that the organotin(iv) heteroboroxine substituted by 4-pyridyl group forms an infinite polymeric chains via N→B interactions in the solid state. This polymer collapsed back to monomeric units upon dissolution.
Collapse
Affiliation(s)
- Monika Kořenková
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10, Pardubice, Czech Republic.
| | | | | | | | | |
Collapse
|
15
|
|
16
|
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
| |
Collapse
|
17
|
Tönnemann J, Scopelliti R, Zhurov KO, Menin L, Dehnen S, Severin K. Borophosphonate Cages: Easily Accessible and Constitutionally Dynamic Heterocubane Scaffolds. Chemistry 2012; 18:9939-45. [DOI: 10.1002/chem.201201287] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Indexed: 11/08/2022]
|
18
|
Shankar R, Jain A, Kociok-Köhn G, Molloy KC. Diorganotin-Based Coordination Polymers Derived from Sulfonate/Phosphonate/Phosphonocarboxylate Ligands. Inorg Chem 2011; 50:1339-50. [DOI: 10.1021/ic1018423] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ravi Shankar
- Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Archana Jain
- Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | | | | |
Collapse
|
19
|
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]
|
20
|
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]
|
21
|
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]
|
22
|
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]
|
23
|
Chandrasekhar V, Nagarajan L, Clérac R, Ghosh S, Verma S. A Distorted Cubic Tetranuclear Copper(II) Phosphonate Cage with a Double-Four-Ring-Type Core. Inorg Chem 2008; 47:1067-73. [DOI: 10.1021/ic701948g] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [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 TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Loganathan Nagarajan
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Rodolphe Clérac
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Surajit Ghosh
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Sandeep Verma
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| |
Collapse
|
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
|
Murugavel R, Shanmugan S. Seeking tetrameric transition metal phosphonate with a D4R core and organising it into a 3-D supramolecular assembly. Chem Commun (Camb) 2007:1257-9. [PMID: 17356775 DOI: 10.1039/b616439k] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first cubic zinc phosphonate [tBuPO(3)Zn(2-apy)](4) (1) whose core resembles the D4R SBU of zeolites, has been synthesised from a reaction between zinc acetate, tert-butylphosphonic acid and 2-aminopyridine at room temperature; the X-ray structure determination reveals that the molecules of , which crystallise in the tetragonal I4(1)/a space group with crystallographically imposed 4 symmetry, form a 3-D supramolecular assembly aided by N-H...O hydrogen bonding.
Collapse
Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India.
| | | |
Collapse
|
26
|
Baskar V, Shanmugam M, Sañudo EC, Shanmugam M, Collison D, McInnes EJL, Wei Q, Winpenny REP. Metal cages using a bulky phosphonate as a ligand. Chem Commun (Camb) 2007:37-9. [PMID: 17279253 DOI: 10.1039/b613756c] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, structure, magnetic and electronic properties of soluble transition metal phosphonate cages utilizing tritylphosphonic acid (TPA) as ligand are reported.
Collapse
Affiliation(s)
- Viswanathan Baskar
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, UK M13 9PL
| | | | | | | | | | | | | | | |
Collapse
|
27
|
|
28
|
|
29
|
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]
|
30
|
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]
|
31
|
Vargas G, Hernández I, Höpfl H, Ochoa ME, Castillo D, Farfán N, Santillan R, Gómez E. Preparation and Structural Characterization of Three Types of Homo- and Heterotrinuclear Boron Complexes: Salen{[B−O−B][O2BOH]}, Salen{[B−O−B][O2BPh]}, and Salen{[B−O−B][O2P(O)Ph]}. Inorg Chem 2004; 43:8490-500. [PMID: 15606198 DOI: 10.1021/ic048862e] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three types of homo- and heterotrinuclear boron complexes have been obtained in moderate to good yields from reactions of salen-type ligands with boric acid and combinations of boric acid with phenylboronic and phenylphosphonic acid. The products are air-stable and have relatively high melting points (>290 degrees C) but are poorly soluble or insoluble in common organic solvents. They have been characterized as far as possible by elemental analysis, mass spectrometry, IR, (1)H, (11)B, and (31)P NMR spectroscopy, and X-ray crystallography. Furthermore, theoretical calculations have been performed for representative examples to permit a complete comparison of the different structure types. A detailed analysis of the molecular structures showed that the complexes are constructed around a central B(3)O(3) or B(2)PO(3) ring. The salen ligands are attached to two boron atoms of these rings, which have therefore tetrahedral coordination geometries. The complexes contain seven- and eight-membered heterocycles of the B(2)C(n)ON(2) (n = 2, 3) type with chair or twisted-chair and boat-chair or chair-chair conformations, respectively. In the homotrinuclear complexes one of the three boron atoms is three-coordinate and can therefore still act as Lewis acid, thus making these products interesting for catalytic applications, e.g. in asymmetric synthesis. Depending on the substitutents attached to the boron atoms, these complexes show a relationship with either trimetaboric acid, boroxine, or the tetraborate dianion found in Borax.
Collapse
Affiliation(s)
- Gabriela Vargas
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62210 Cuernavaca, México
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Structure and Bonding in Boron-Containing Macrocycles and Cages — Comparison to Related Structures with Other Elements Including Organic Molecules. STRUCTURE AND BONDING 2002. [DOI: 10.1007/3-540-47808-6_1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
|
33
|
Azaïs T, Bonhomme-Coury L, Vaissermann J, Bertani P, Hirschinger J, Maquet J, Bonhomme C. Synthesis and characterization of a novel cyclic aluminophosphinate: structure and solid-state NMR study. Inorg Chem 2002; 41:981-8. [PMID: 11849102 DOI: 10.1021/ic010700k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present the structure and a multinuclear solid-state NMR study of a new cyclic aluminophosphinate. The crystallographic structure of [Al(2)(HC(6)H(5)PO(2))(2)(C(4)H(9)OH)(8)]Cl(4) (compound 1) was obtained at low temperature (a = 11.830(7) A, b = 14.216(6) A, c = 17.790(6) A, beta = 91.25(4) degrees, monoclinic, P21/c, Z = 2). (13)C IRCP (inversion recovery cross polarization) and NQS (non quaternary suppression) NMR experiments allowed the complete assignment of the quaternary carbon atom of the phenyl ring and the precise determination of the isotropic /(1)J(P-C)/ coupling constant. (31)P CP MAS dynamics was carefully studied by varying the contact time. Dipolar oscillations even at slow MAS were observed. Up to 11 kHz, these oscillations were more pronounced, and the P-H distance was easily extracted. (27)Al NMR quadrupolar parameters for 1 were obtained with very good accuracy, and unusual satellite transition splitting was observed. Furthermore, the isotropic lines of the inner and outer transitions were clearly observable, leading to the unambiguous determination of the quadrupolar parameters.
Collapse
Affiliation(s)
- Thierry Azaïs
- Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
| | | | | | | | | | | | | |
Collapse
|
34
|
Wang Y, Parkin S, Atwood D. Ligand-tetrahydrofuran coupling in chelated aluminum phosphinates. Inorg Chem 2002; 41:558-65. [PMID: 11825083 DOI: 10.1021/ic0110326] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
When the reagents LAlMe (L = N,N'-(alkylene or arylene)bis(3,5-di-tert-butyl)salicylideneimine (alkylene = ethylene (Salen(tBu))(1), propylene (Salpen(tBu))(2), and butylene (Salben(tBu)) (3); arylene = phenylene (Salophen(tBu) (4), 3,4-dimethylphenylene (Salomphen(tBu) (5)) are combined with Ph(H)P(O)OH in tetrahydrofuran (thf) the unique aluminophosphinate compounds, [L(tBu)Al[O(2)P(H)Ph]](n) with L, n = Salen,(infinity)(6), Salpen, 2 (7), Salben, 2 (8), Salophen, (infinity)(9) and Salomphen, (infinity)(10) are produced. The yields for the latter two reactions are low, and it was subsequently found that the unique thf-coupled compounds appear in the thf filtrates of the original reaction mixture. These compounds are, [L-thf(tBu)Al[O(2)P(H)Ph]](2), L = Salophen (13) and Salomphen (14). The thf connects through an alpha-carbon to only one of the two possible imine carbons of the ligand. While trying to determine how this coupling proceeds, the six-coordinate, solution-state species LAlMe(thf) (L = Salophen (11) and Salomphen (12) were discovered and implicated as intermediates. All of the compounds are characterized by melting point, NMR, IR, and X-ray analyses for 5-8, 13, and 14. A possible mechanism for the thf coupling event is presented.
Collapse
Affiliation(s)
- Y Wang
- Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055, USA
| | | | | |
Collapse
|
35
|
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
| |
Collapse
|
36
|
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.
Collapse
Affiliation(s)
- D Chakraborty
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Murugavel R, Sathiyendiran M, Walawalkar MG. Di-tert-butyl phosphate complexes of cobalt(II) and zinc(II) as precursors for ceramic M(PO3)2 and M2P2O7 materials: synthesis, spectral characterization, structural studies, and role of auxiliary ligands. Inorg Chem 2001; 40:427-34. [PMID: 11209598 DOI: 10.1021/ic0006100] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reaction of the metal acetates M(OAc)2xH2O with di-tert-butyl phosphate (dtbp-H) (3) in a 4:6 molar ratio in methanol or tetrahydrofuran followed by slow evaporation of the solvent results in the formation of metal phosphate clusters [M4(mu 4-O)(dtbp)6] (M = Co (4, blue); Zn (5, colorless)) in nearly quantitative yields. The same reaction, when carried out in the presence of a donor auxiliary ligand such as imidazole (imz) and ethylenediamine (en), results in the formation of octahedral complexes [M(dtbp)2(imz)4] (M = Co (6); Ni (7); Zn (8)) and [Co(dtbp)2-(en)2] (9). The tetrameric clusters 4 and 5 could also be converted into mononuclear 6 and 8; respectively, by treating them with a large excess of imidazole. The use of slightly bulkier auxiliary ligand 3,5-dimethylpyrazole (3,5-dmp) in the reaction between cobalt acetate and 3 results in the isolation of mononuclear tetrahedral complex [Co(dtbp)2(3,5-dmp)2] (10) in nearly quantitative yields. Perfectly air- and moisture-stable samples of 4-10 were characterized with the aid of analytical, thermoanalytical, and spectroscopic techniques. The molecular structures of the monomeric pale-pink compound 6, colorless 8, and deep-blue 10 were further established by single-crystal X-ray diffraction studies. Crystal data for 6: C28H52CoN8O8P2, a = 8.525(1) A, b = 9.331(3) A, c = 12.697(2) A, alpha = 86.40(2) degrees, beta = 88.12(3) degrees, gamma = 67.12(2) degrees, triclinic, P1, Z = 1. Crystal data for 8: C28H52N8O8P2Zn, a = 8.488(1) A, b = 9.333(1) A, c = 12.723(2) A, alpha = 86.55(1) degrees, beta = 88.04(1) degrees, gamma = 67.42(1) degrees, triclinic, P1, Z = 1. Crystal data for 10: C26H52CoN4O8P2, a = b = 18.114(1) A, c = 10.862(1) A, tetragonal, P4(1), Z = 4. The Co2+ ion in 6 is octahedrally coordinated by four imidazole nitrogens which occupy the equatorial positions and oxygens of two phosphate anions on the axial coordination sites. The zinc derivative 8 is isostructural to the cobalt derivative 6. The crystal structure of 10 reveals that the central cobalt atom is tetrahedrally coordinated by two phosphate and two 3,5-dmp ligands. In all structurally characterized monomeric compounds (6, 8, and 10), the dtbp ligand acts as a monodentate, terminal ligand with free P=O phosphoryl groups. Thermal studies indicate that heating the samples at 171 (for 4) or 93 degrees C (for 5) leads to the loss of twelve equivalents of isobutene gas yielding carbon-free [M4(mu 4-O)(O2P(OH)2)6], which undergoes further condensation by water elimination to yield a material of the composition Co4O19P6. This sample of 4 when heated above 500 degrees C contains the crystalline metaphosphate Co(PO3)2 along with amorphous pyrophosphate M2P2O7 in a 2:1 ratio. Similar heat treatment on samples 6-8 results in the exclusive formation of the respective metaphosphates Co(PO3)2, Ni(PO3)2, and Zn(PO3)2; the tetrahedral derivative 10 also cleanly converts into Co(PO3)2 on heating above 600 degrees C.
Collapse
Affiliation(s)
- R Murugavel
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India.
| | | | | |
Collapse
|
38
|
Chakraborty D, Horchler S, Roesky HW, Noltemeyer M, Schmidt HG. Application of n-Bu4NHF2 as a fluorinating agent for the preparation of fluoroanions: synthesis and crystal structure of the anions [t-BuPO3AlF2]2(2-), [PhPO3AlF2]2(2-), and [(O-i-Pr)3Ti(mu-F)2(mu-O-i-Pr)Ti(O-i-Pr)3]-. Inorg Chem 2000; 39:3995-8. [PMID: 11198852 DOI: 10.1021/ic991453b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first phosphonate anions of aluminum-containing fluorine and an anionic bridged fluoroalkoxy derivative of titanium have been realized using n-Bu4NHF2 as a fluorinating agent in organometallic synthesis. Reactions of [RPO3AlMe]4 [R = Ph (1), t-Bu] with n-Bu4NHF2 yield organic-soluble compounds of the type [n-Bu4N]2[RPO3AlF2]2 [R = Ph (2), t-Bu (3)], whereas the reaction of Ti(O-i-Pr)4 with n-Bu4NHF2 results in the formation of [n-Bu4N][O-i-Pr)3Ti(mu-F)2(mu-O-i-Pr)Ti(O-i-Pr)3] (4). These compounds have been obtained in high yields and have been adequately characterized through spectroscopic techniques and X-ray diffraction studies.
Collapse
Affiliation(s)
- D Chakraborty
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D 37077 Göttingen, Germany
| | | | | | | | | |
Collapse
|
39
|
|
40
|
Lewkowski J, Mortier J, Vaultier M. THE STUDY OF THE REACTION BETWEEN THIOPHOSPHORYL ESTERS AND BORON TRIBROMIDE. THE SYNTHESIS OF OXATHIAPHOSPHABORETANES. PHOSPHORUS SULFUR 2000. [DOI: 10.1080/10426500008045215] [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]
|
41
|
|
42
|
Alkylaluminophosphonate-catalyzed ring-opening homopolymerization of epichlorohydrin and propylene oxide. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(99)00764-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
43
|
Pinkas J, Chakraborty D, Yang Y, Murugavel R, Noltemeyer M, Roesky HW. Reactions of Trialkyl Phosphates with Trialkyls of Aluminum and Gallium: New Route to Alumino- and Gallophosphate Compounds via Dealkylsilylation. Organometallics 1999. [DOI: 10.1021/om9806702] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiri Pinkas
- Institut für Anorganische Chemie der Georg-August-Universität, Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Debashis Chakraborty
- Institut für Anorganische Chemie der Georg-August-Universität, Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Yu Yang
- Institut für Anorganische Chemie der Georg-August-Universität, Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ramaswamy Murugavel
- Institut für Anorganische Chemie der Georg-August-Universität, Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Mathias Noltemeyer
- Institut für Anorganische Chemie der Georg-August-Universität, Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Georg-August-Universität, Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| |
Collapse
|
44
|
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
|
45
|
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]
|
46
|
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.
Collapse
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
| | | | | | | | | | | |
Collapse
|