Detailed Information on Publication Record
2006
Alumazene adducts with triphenylphosphine oxide
LÖBL, Jiří, Marek NEČAS and Jiří PINKASBasic information
Original name
Alumazene adducts with triphenylphosphine oxide
Name in Czech
Adukty alumazenu s trifenylfosfinoxidem
Authors
LÖBL, Jiří (203 Czech Republic), Marek NEČAS (203 Czech Republic) and Jiří PINKAS (203 Czech Republic, guarantor)
Edition
Main Group Chemistry, UK, Taylor & Francis, 2006, 1024-1221
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10402 Inorganic and nuclear chemistry
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.000 in 2002
RIV identification code
RIV/00216224:14310/06:00016265
Organization unit
Faculty of Science
UT WoS
000208085700009
Keywords in English
Alumazene; Single-crystal X-ray diffraction; Iminoalane; Triphenylphosphine oxide; Lewis acid-base adducts
Tags
Tags
International impact, Reviewed
Změněno: 31/5/2009 22:21, prof. RNDr. Jiří Pinkas, Ph.D.
V originále
1,3,5-trimethyl-2,4,6-tris(2,6-diisopropylphenyl)alumazene [2,6-(i-Pr)2C6H3NAlMe]3, (1) is a benzene-like iminoalane with a planar hexagonal (Al-N)3 core. The aluminum centers are highly Lewis acidic due to the low delocalization of nitrogen lone pairs. We examined the alumazene ability to form acid-base adducts with triphenylphosphine oxide. Both monoadduct, 1(OPPh3), (2) and bisadduct 1(OPPh3)2, (3) were prepared, isolated, and spectroscopically characterized. Their molecular structures were determined by the single-crystal X-ray diffraction method. The monoadduct 2 displays a boat conformation of the central ring with very short Al[sbnd]N bonds (1.779, 1.769(2) Å). The bisadduct 3 features the expected trans geometry in contrast to the previously reported bisadduct cis-1[OP(OMe)3]2. A different behavior of 2 and 3 in solution was observed by NMR spectroscopy. The monoadduct 2 is stable to dissociation while 3 shows signal broadening by chemical exchange because of the weakening of the second coordination Al[sbnd]O bond and/or internal rotation.
In Czech
1,3,5-trimethyl-2,4,6-tris(2,6-diisopropylfenyl)alumazen [2,6-(i-Pr)2C6H3NAlMe]3, (1) je iminoalan analogický benzenu s planárním šestičlenným (Al-N)3 centrálním kruhem. Hliníkové atomy jsou Lewisovsky kyselé z důvodu nízké delokalizace volných e párů na N. Adukty alumazenu s trifenylfosfin oxidem - monoadukt, 1(OPPh3), (2) a bisadukt 1(OPPh3)2, (3) byly připraveny, isolovány a IR a NMR spektroskopicky charakterizovány. Jejich molekulové struktury byly určeny rtg. difrakčními metodami.
Links
| GA203/04/0296, research and development project |
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| MSM0021622410, plan (intention) |
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