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Prigyai N, Chanmungkalakul S, Ervithayasuporn V, Yodsin N, Jungsuttiwong S, Takeda N, Unno M, Boonmak J, Kiatkamjornwong S. Lithium-Templated Formation of Polyhedral Oligomeric Silsesquioxanes (POSS). Inorg Chem 2019; 58:15110-15117. [PMID: 31663724 DOI: 10.1021/acs.inorgchem.9b01836] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A coordination complex, lithium hepta(i-butyl)silsesquioxane trisilanolate (1; Li-T7), a stable intermediate in silsesquioxane (SQ) syntheses, was successfully isolated in 65% yield and found to be highly soluble in nonpolar solvents such as hexane. The structure of Li-T7 was confirmed by NMR, IR spectroscopy, matrix-assisted laser desorption ionization time-of-flight mass spectrometry, electrospray ionization mass spectrometry, and computational simulation, providing detailed elucidation of the intermolecular self-association of the SQ cage with a box-shaped Li6O6 polyhedron through strong coordination bonds. After acid treatment, Li-T7 undergoes lithium-proton cationic exchange, yielding hepta(i-butyl)silsesquioxane trisilanol (2; H-T7) quantitatively. The high yield of H-T7 seems to be influenced by Li-O bonding in the Li-T7 complex that affects the selective formation of hepta(i-butyl)silsesquioxane trisilanolate and the bulky i-butyl groups which may prevent decomposition or SQ cage-rearrangement even at reflux under alkaline conditions. Single-crystal X-ray crystallography confirms the presence of the dumbbell-shaped SQ partial cages through strong intermolecular hydrogen bonds. Interestingly, lowering the polarity of the reaction solution by adding dichloromethane results in formation of the cubic octa(i-butyl)silsesquioxane (3; T8) cage in a good yield (47%), which is isolated by crystallization from the reaction solution.
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Affiliation(s)
- Nicha Prigyai
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, and Center for Inorganic and Materials Chemistry, Faculty of Science , Mahidol University , Rama VI Road , Ratchathewi, Bangkok 10400 , Thailand
| | - Supphachok Chanmungkalakul
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, and Center for Inorganic and Materials Chemistry, Faculty of Science , Mahidol University , Rama VI Road , Ratchathewi, Bangkok 10400 , Thailand
| | - Vuthichai Ervithayasuporn
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, and Center for Inorganic and Materials Chemistry, Faculty of Science , Mahidol University , Rama VI Road , Ratchathewi, Bangkok 10400 , Thailand
| | - Nuttapon Yodsin
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science , Ubon Ratchathani University , Ubon Ratchathani 34190 , Thailand
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science , Ubon Ratchathani University , Ubon Ratchathani 34190 , Thailand
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology , Gunma University , Kiryu , Gunma 376-8515 , Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology , Gunma University , Kiryu , Gunma 376-8515 , Japan
| | - Jaursup Boonmak
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science , Khon Kaen University , Khon Kaen 40002 , Thailand
| | - Suda Kiatkamjornwong
- Office of Research Affairs , Chulalongkorn University , 254 Phayathai Road , Wangmai, Phatumwan, Bangkok 10330 , Thailand.,FRS(T), Division of Science , the Royal Society of Thailand , Sanam Suepa , Dusit, Bangkok 10300 , Thailand
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Guan J, Tomobe K, Madu I, Goodson T, Makhal K, Trinh MT, Rand SC, Yodsin N, Jungsuttiwong S, Laine RM. Photophysical Properties of Partially Functionalized Phenylsilsesquioxane: [RSiO1.5]7[Me/nPrSiO1.5] and [RSiO1.5]7[O0.5SiMe3]3 (R = 4-Me/4-CN-Stilbene). Cage-Centered Magnetic Fields Form under Intense Laser Light. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00699] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Nuttapon Yodsin
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Ubon Ratchathani University, Ubon, Thailand 34190
| | - Siriporn Jungsuttiwong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Ubon Ratchathani University, Ubon, Thailand 34190
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Bahrami M, Hashemi H, Ma X, Kieffer J, Laine RM. Why do the [PhSiO1.5]8,10,12 cages self-brominate primarily in the ortho position? Modeling reveals a strong cage influence on the mechanism. Phys Chem Chem Phys 2014; 16:25760-4. [DOI: 10.1039/c4cp03997a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
(PhSiO1.5)8,10,12 cages are bulky, electron withdrawing like CF3; yet self-brominate (60 °C), favoring ortho substitution: PhT8 (≈85%), PhT10 (≈75%) and PhT12 (60%).
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Affiliation(s)
- M. Bahrami
- Dept. of Mater. Sci. & Eng
- Univ. of Michigan
- Ann Arbor, USA
| | - H. Hashemi
- Dept. of Mater. Sci. & Eng
- Univ. of Michigan
- Ann Arbor, USA
| | - X. Ma
- Dept. of Mater. Sci. & Eng
- Univ. of Michigan
- Ann Arbor, USA
| | - J. Kieffer
- Dept. of Mater. Sci. & Eng
- Univ. of Michigan
- Ann Arbor, USA
| | - R. M. Laine
- Dept. of Mater. Sci. & Eng
- Univ. of Michigan
- Ann Arbor, USA
- Macromolecular Sci. & Eng
- Univ. of Michigan
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Phillips H, Zheng S, Hyla A, Laine R, Goodson T, Geva E, Dunietz BD. Ab Initio Calculation of the Electronic Absorption of Functionalized Octahedral Silsesquioxanes via Time-Dependent Density Functional Theory with Range-Separated Hybrid Functionals. J Phys Chem A 2012; 116:1137-45. [DOI: 10.1021/jp208316t] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Heidi Phillips
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
| | - Shaohui Zheng
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
| | - Alexander Hyla
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
| | - Richard Laine
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
| | - Theodore Goodson
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
| | - Eitan Geva
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
| | - Barry D. Dunietz
- Department of Chemistry, ‡Department of Material Science and Engineering, and §Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan, United States
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Wann DA, Less RJ, Rataboul F, McCaffrey PD, Reilly AM, Robertson HE, Lickiss PD, Rankin DWH. Accurate Gas-Phase Experimental Structures of Octasilsesquioxanes (Si8O12X8; X = H, Me). Organometallics 2008. [DOI: 10.1021/om800357t] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Derek A. Wann
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - Robert J. Less
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - Franck Rataboul
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - Philip D. McCaffrey
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - Anthony M. Reilly
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - Heather E. Robertson
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - Paul D. Lickiss
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
| | - David W. H. Rankin
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, U.K. EH9 3JJ, and Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ
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Fully Condensed Polyhedral Oligosilsesquioxanes (POSS): From Synthesis to Application. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2008. [DOI: 10.1016/s0065-3055(08)00001-4] [Citation(s) in RCA: 192] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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