%0 Journal Article %1 ISI:000278352200001 %A Amini, Mostafa M. %A Mohammadnezhad, Gholamhossein %A Mirzaee, Mehdi %A Khavasi, Hamid Reza %C THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND %D 2010 %I JOHN WILEY & SONS LTD %J APPLIED ORGANOMETALLIC CHEMISTRY %K (27)Al NMR; X-ray alkoxydisilanolate; composite} crystal structure; {aluminum %N 6 %P 431-438 %R 10.1002/aoc.1634 %T Synthesis, characterization and single crystal structure determination of aluminum alkoxydisilanolates: precursors for silica-alumina composite %V 24 %X Several novel aluminum alkoxydisilanolate complexes were prepared by reaction of triphenylsilanol with aluminum 2-methoxyethoxide, aluminum 2-ethoxyethoxide, aluminum sec-butoxide and aluminum iso-propoxide. All new complexes, (Ph(3)SiO)(2)Al(OR)(2) where R = CH(2)CH(2)OCH(3) (1), CH(2)CH(2)OC(2)H(5) (2), CH(CH(3))CH(2)CH(3) (3) and CH(CH(3))(2) (4) were characterized by elemental analysis, mass spectrometry and infrared spectroscopy (IR), as well as (1)H, (13)C, (29)Si and (27)Al NMR spectroscopies. The solid-state structures of the representative compound 2 and 4 were also verified by single-crystal X-ray analyses. Complexes 2 and 4 are dimers having distorted trigonal bipyramidal and tetrahedral coordination at the aluminum center, respectively. The (27)Al NMR spectrum of compound 2 showed that the solid-state structure of the complex was not retained in solution, and tetracoordinated aluminum was found in solution in contrast to the pentacoordinated geometry in the solid state. The hydrothermal treatment of 1 and 4 at 200 degrees C and the subsequent calcination at 1000 degrees C resulted in the formation of alumina-silica composite (4SiO(2)center dot Al(2)O(3)) with gamma-alumina in the silica matrix. Copyright (C) 2010 John Wiley & Sons, Ltd.

@article{ISI:000278352200001, abstract = {{Several novel aluminum alkoxydisilanolate complexes were prepared by reaction of triphenylsilanol with aluminum 2-methoxyethoxide, aluminum 2-ethoxyethoxide, aluminum sec-butoxide and aluminum iso-propoxide. All new complexes, {[}(Ph(3)SiO)(2)Al(OR)](2) {[}where R = CH(2)CH(2)OCH(3) (1), CH(2)CH(2)OC(2)H(5) (2), CH(CH(3))CH(2)CH(3) (3) and CH(CH(3))(2) (4)] were characterized by elemental analysis, mass spectrometry and infrared spectroscopy (IR), as well as (1)H, (13)C, (29)Si and (27)Al NMR spectroscopies. The solid-state structures of the representative compound 2 and 4 were also verified by single-crystal X-ray analyses. Complexes 2 and 4 are dimers having distorted trigonal bipyramidal and tetrahedral coordination at the aluminum center, respectively. The (27)Al NMR spectrum of compound 2 showed that the solid-state structure of the complex was not retained in solution, and tetracoordinated aluminum was found in solution in contrast to the pentacoordinated geometry in the solid state. The hydrothermal treatment of 1 and 4 at 200 degrees C and the subsequent calcination at 1000 degrees C resulted in the formation of alumina-silica composite (4SiO(2)center dot Al(2)O(3)) with gamma-alumina in the silica matrix. Copyright (C) 2010 John Wiley \& Sons, Ltd.}}, added-at = {2017-05-10T15:29:29.000+0200}, address = {{THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND}}, affiliation = {{Amini, MM (Reprint Author), Shaheed Beheshti Univ, Dept Chem, Tehran 1983963113, Iran. Amini, Mostafa M.; Mohammadnezhad, Gholamhossein; Khavasi, Hamid Reza, Shaheed Beheshti Univ, Dept Chem, Tehran 1983963113, Iran. Mirzaee, Mehdi, Shahrood Univ Technol, Dept Chem, Shahrood, Iran.}}, author = {Amini, Mostafa M. and Mohammadnezhad, Gholamhossein and Mirzaee, Mehdi and Khavasi, Hamid Reza}, author-email = {{m-pouramini@cc.sbu.ac.ir}}, biburl = {https://www.bibsonomy.org/bibtex/29e633e56e4e530f0e6a8e7539a71d0fa/hkhavasi}, cited-references = {{Alipour A, 2000, J COORD CHEM, V51, P319, DOI 10.1080/00958970008055137. Amini MM, 2005, J SOL-GEL SCI TECHN, V36, P19, DOI 10.1007/s10971-005-4790-7. AMINI MM, 2006, POLYHEDRON, V24, P3231. AMMA EL, 1963, J INORG NUCL CHEM, V7, P779. Andrianainarivelo M, 1996, J MATER CHEM, V6, P1665, DOI 10.1039/jm9960601665. APBLETT AW, 1992, CAN J CHEM, V70, P771, DOI 10.1139/v92-102. APBLETT AW, 1983, J CRYST SPECTROSC, V23, P529. Atwood DA, 1997, ORGANOMETALLICS, V16, P2659, DOI 10.1021/om9700831. BARRON AR, 1991, J AM CHEM SOC, V113, P39, DOI 10.1021/ja00001a007. BENN R, 1983, ANGEW CHEM INT EDIT, V22, P779, DOI 10.1002/anie.198307791. BRADLEY D C, 2001, ALKOXO ARYLOXO DERIV. Brutchey RL, 2005, J MOL CATAL A-CHEM, V238, P1, DOI 10.1016/j.molcata.2005.04.032. CAYTON RH, 1991, INORG CHEM, V30, P1020, DOI 10.1021/ic00005a027. Chen ZF, 2006, JCT RES, V3, P231, DOI 10.1007/BF02774512. Child WC, 1923, J AM CHEM SOC, V45, P3013, DOI 10.1021/ja01665a031. Duchateau R, 1999, ORGANOMETALLICS, V18, P5447, DOI 10.1021/om9904495. FOLTING K, 1991, POLYHEDRON, V10, P1639, DOI 10.1016/S0277-5387(00)83775-4. Francis JA, 2000, J ORGANOMET CHEM, V597, P29, DOI 10.1016/S0022-328X(99)00571-9. HEALY MD, 1993, J CHEM SOC DALTON, P441, DOI 10.1039/dt9930000441. {[}Anonymous], 1989, STUD SURF SCI CATAL. Jain AK, 2006, POLYHEDRON, V25, P654, DOI 10.1016/j.poly.2005.07.028. Johnson BFG, 2000, J ORGANOMET CHEM, V596, P221, DOI 10.1016/S0022-328X(99)00744-5. LANDRY CC, 1993, J MATER CHEM, V3, P597, DOI 10.1039/jm9930300597. Liao TC, 2003, MACROMOL CHEM PHYSIC, V204, P885, DOI 10.1002/macp.200390054. Lugmair CG, 2002, CHEM MATER, V14, P888, DOI 10.1021/cm010846h. Miller JB, 1996, LANGMUIR, V12, P2878, DOI 10.1021/la960064g. Mohammadnezhad GS, 2007, ACTA CRYSTALLOGR E, V63, pM3049, DOI 10.1107/S1600536807057728. MUNOZHERNANDEZ MA, 2002, COORDIN CHEM REV, V210, P1. NYQUIST P, 1971, INFRARED SPECTRA INO, P94. OLIVER JP, 1990, POLYHEDRON, V9, P409, DOI 10.1016/S0277-5387(00)80596-3. Pauls J, 2000, Z ANORG ALLG CHEM, V626, P270, DOI 10.1002/(SICI)1521-3749(200001)626:1<270::AID-ZAAC270>3.3.CO;2-F. Pecharroman C, 1999, J PHYS CHEM B, V103, P6160, DOI 10.1021/jp983316q. Pietrzykowski A, 2002, INORG CHIM ACTA, V334, P385, DOI 10.1016/S0020-1693(02)00859-9. SCHULZ S, 1995, J CHEM SOC DA, V1, P177. Shek CH, 1997, NANOSTRUCT MATER, V8, P605, DOI 10.1016/S0965-9773(97)00201-8. Sheldrick G.M., 1997, SHELX97 PROGRAM CRYS. SHORT DR, 1986, J CATAL, V82, P11. {*}STOE CIE, 2000, X SPAPE32 VERS 1 07B. Stoe \& Cie, 2004, X SHAPE VERS 2 05 PR. {*}STOE CIE, 2005, XAREA VERS 1 30 PROG. {*}STOE CIE, 2005, XRED VERS 1 28B PROG. TUROVA NY, 1979, J INORG NUCL CHEM, V41, P5, DOI 10.1016/0022-1902(79)80384-X. Turova N. Ya., 1978, KOORDINATS KHIM, V4, P1517. ULRICH DR, 1988, NATO ASI SERIES E, V141, P103. Veith M, 1997, ANGEW CHEM INT EDIT, V36, P117, DOI 10.1002/anie.199701171. Wang JA, 1999, J PHYS CHEM B, V103, P299, DOI 10.1021/jp983130r. Wang YZ, 2005, Z ANORG ALLG CHEM, V631, P2937, DOI 10.1002/zaac.200500131. WENGROVIUS JH, 1986, J AM CHEM SOC, V108, P982, DOI 10.1021/ja00265a024. ZEITLER VA, 1957, J AM CHEM SOC, V79, P4616, DOI 10.1021/ja01574a010. 1995, INT TABLES XRAY CR C.}}, doc-delivery-number = {{605MR}}, doi = {{10.1002/aoc.1634}}, funding-acknowledgement = {{Vice-President's Office for Research Affairs of Shahid Beheshti University}}, funding-text = {{The authors thank the Vice-President's Office for Research Affairs of Shahid Beheshti University for supporting this work.}}, interhash = {a3c8f678bb150cb9eb45eed06f5d7b1b}, intrahash = {9e633e56e4e530f0e6a8e7539a71d0fa}, issn = {{0268-2605}}, journal = {{APPLIED ORGANOMETALLIC CHEMISTRY}}, journal-iso = {{Appl. Organomet. Chem.}}, keywords = {(27)Al NMR; X-ray alkoxydisilanolate; composite} crystal structure; {aluminum}, keywords-plus = {{MOLECULAR-STRUCTURE; COMPLEXES; ALKOXIDE; POLYMERIZATION; TRANSFORMATION; ISOPROPOXIDE; ARYLOXIDES; CHEMISTRY; EVOLUTION; CATALYSTS}}, language = {{English}}, month = {{JUN}}, number = {{6}}, number-of-cited-references = {{50}}, pages = {{431-438}}, publisher = {{JOHN WILEY \& SONS LTD}}, research-areas = {{Chemistry}}, researcherid-numbers = {{Mohammadnezhad, Gholamhossein/F-8582-2017}}, times-cited = {{9}}, timestamp = {2017-05-10T15:29:29.000+0200}, title = {{Synthesis, characterization and single crystal structure determination of aluminum alkoxydisilanolates: precursors for silica-alumina composite}}, type = {{Article}}, unique-id = {{ISI:000278352200001}}, usage-count-last-180-days = {{0}}, usage-count-since-2013 = {{16}}, volume = {{24}}, web-of-science-categories = {{Chemistry, Applied; Chemistry, Inorganic \& Nuclear}}, year = {{2010}} }