%0 Journal Article %1 ISI:000266111100006 %A Mohammadnezhad, Gholamhossein %A Amini, Mostafa M. %A Khavasi, Hamidreza %A Mirzaei, Peiman %C 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND %D 2008 %I TAYLOR & FRANCIS LTD %J MAIN GROUP CHEMISTRY %K alkoxide; alkoxyalcohol; aluminum crystal structure} {organoaluminum; %N 4 %P 323-331 %R 10.1080/10241220902811282 %T Synthesis, characterization, and single crystal structure determination of an oxo-derivative of methylaluminum containing asymmetric carbon %V 7 %X Dimeric dimethylaluminum Compound, \Me(2)Almu-OCH(CH(3))CH(2)OCH(3)\(2), was synthesized by the reaction of trimethylaluminum and 1-methoxy-2-propanol, an alkoxyalcohol containing asymmetric carbon, and characterized by (1)H, (13)C, and (27)Al NMR spectroscopy. The 1-methoxy-2-propoxodimethylaluminum, as shown by the single crystal structure determination, exists as a dimer in the solid-state in which the ether alkoxide ligand chelates to the aluminum atom. The solution structure was probed by (1)H, (13)C, and (27)Al NMR spectroscopy and the results showed that the five-coordinate isomer is in equilibrium with the four-coordinate isomer. However, variable-temperature (27)Al NMR spectroscopy showed only the presence of five-coordinate isomer at - 15 degrees C and below.

@article{ISI:000266111100006, abstract = {{Dimeric dimethylaluminum Compound, \{Me(2)Al{[}mu-OCH(CH(3))CH(2)OCH(3)]\}(2), was synthesized by the reaction of trimethylaluminum and 1-methoxy-2-propanol, an alkoxyalcohol containing asymmetric carbon, and characterized by (1)H, (13)C, and (27)Al NMR spectroscopy. The 1-methoxy-2-propoxodimethylaluminum, as shown by the single crystal structure determination, exists as a dimer in the solid-state in which the ether alkoxide ligand chelates to the aluminum atom. The solution structure was probed by (1)H, (13)C, and (27)Al NMR spectroscopy and the results showed that the five-coordinate isomer is in equilibrium with the four-coordinate isomer. However, variable-temperature (27)Al NMR spectroscopy showed only the presence of five-coordinate isomer at - 15 degrees C and below.}}, added-at = {2017-05-10T15:29:29.000+0200}, address = {{4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND}}, affiliation = {{Amini, MM (Reprint Author), Shaheed Beheshti Univ, Dept Chem, GC, Tehran 1983963113, Iran. Mohammadnezhad, Gholamhossein; Amini, Mostafa M.; Khavasi, Hamidreza; Mirzaei, Peiman, Shaheed Beheshti Univ, Dept Chem, GC, Tehran 1983963113, Iran.}}, author = {Mohammadnezhad, Gholamhossein and Amini, Mostafa M. and Khavasi, Hamidreza and Mirzaei, Peiman}, author-email = {{m-pouramini@cc.sbu.ac.ir}}, biburl = {https://www.bibsonomy.org/bibtex/25500790c2f92cbb0516e230c2be2b73e/hkhavasi}, cited-references = {{Allan JF, 2000, J ORGANOMET CHEM, V602, P15, DOI 10.1016/S0022-328X(00)00111-X. Atwood DA, 1999, ORGANOMETALLICS, V18, P976, DOI 10.1021/om980900c. Atwood DA, 2000, J ORGANOMET CHEM, V600, P186, DOI 10.1016/S0022-328X(00)00147-9. BARRON AR, 1988, J CHEM SOC DALTON, P3047, DOI 10.1039/dt9880003047. BENN R, 1983, ANGEW CHEM INT EDIT, V22, P779, DOI 10.1002/anie.198307791. CETINKAYA B, 1990, POLYHEDRON, V9, P239, DOI 10.1016/S0277-5387(00)80575-6. Francis JA, 1999, ORGANOMETALLICS, V18, P4399, DOI 10.1021/om980907u. HAALAND A, 1975, J ORGANOMET CHEM, V94, P345, DOI 10.1016/S0022-328X(00)86942-9. Lewinski J, 2005, ORGANOMETALLICS, V24, P4588, DOI 10.1021/om050295v. Lin CH, 1999, J ORGANOMET CHEM, V575, P67, DOI 10.1016/S0022-328X(98)00968-1. McMahon CN, 1999, CHEM MATER, V11, P3181, DOI 10.1021/cm990284q. Obrey SJ, 2001, J CHEM SOC DALTON, P2456, DOI 10.1039/b104578b. Obrey SJ, 2001, ORGANOMETALLICS, V20, P5119, DOI 10.1021/om010394i. Pietrzykowski A, 2002, INORG CHIM ACTA, V334, P385, DOI 10.1016/S0020-1693(02)00859-9. PINDUR U, 1993, CHEM REV, V93, P741, DOI 10.1021/cr00018a006. Saito S, 1998, J AM CHEM SOC, V120, P813, DOI 10.1021/ja972765l. Schumann H, 1996, J ORGANOMET CHEM, V512, P117, DOI 10.1016/0022-328X(95)05917-E. SHELDRICK GM, 1997, SHELX97 PROGRAM CYRS. STOE, 2000, X STEP32 VERSION 1 0. STOE, 2005, X RED VERSION 1 28B. STOE, 2004, X SHAPE VERSION 2 05. STOE, 2005, X AREA VERSION 1 30. Tayama E, 2002, TETRAHEDRON, V58, P8307, DOI 10.1016/S0040-4020(02)00981-X. WENGROVIUS JH, 1986, J AM CHEM SOC, V108, P982, DOI 10.1021/ja00265a024.}}, doc-delivery-number = {{446GW}}, doi = {{10.1080/10241220902811282}}, interhash = {09d89fc0aa14446748ff1eed158a2f0f}, intrahash = {5500790c2f92cbb0516e230c2be2b73e}, issn = {{1024-1221}}, journal = {{MAIN GROUP CHEMISTRY}}, journal-iso = {{Main Group Chem.}}, keywords = {alkoxide; alkoxyalcohol; aluminum crystal structure} {organoaluminum;}, keywords-plus = {{ALUMINUM COMPOUNDS; ALKOXIDES; TRIMETHYLALUMINUM; DIMETHYLALUMINUM; COMPLEXES; CHEMISTRY; GALLIUM; LIGANDS}}, language = {{English}}, month = {{DEC}}, number = {{4}}, number-of-cited-references = {{24}}, pages = {{323-331}}, publisher = {{TAYLOR \& FRANCIS LTD}}, research-areas = {{Chemistry}}, researcherid-numbers = {{Mohammadnezhad, Gholamhossein/F-8582-2017}}, times-cited = {{2}}, timestamp = {2017-05-10T15:29:29.000+0200}, title = {{Synthesis, characterization, and single crystal structure determination of an oxo-derivative of methylaluminum containing asymmetric carbon}}, type = {{Article}}, unique-id = {{ISI:000266111100006}}, usage-count-last-180-days = {{0}}, usage-count-since-2013 = {{2}}, volume = {{7}}, web-of-science-categories = {{Chemistry, Multidisciplinary}}, year = {{2008}} }