PUMA publications for /user/b_schwederski/structure;thermalhttps://puma.ub.uni-stuttgart.de/user/b_schwederski/structure;thermalPUMA RSS feed for /user/b_schwederski/structure;thermal2024-03-29T09:17:52+01:00Compounds of silicon and homologues, 134. Supersilyl compounds of boron and homologues, 10. Tri(supersilyl)dialanyl (tBu3Si)3Al2· and tetra(supersilyl)cyclotrialanyl (tBu3Si)4Al3· - new stable radicals of a group 13 element from thermolysis of (tBu3Si)4Al2https://puma.ub.uni-stuttgart.de/bibtex/2acb9d483a3a86d4d11a7fbdf85a87b42/b_schwederskib_schwederski2019-07-15T13:41:23+02:00ESR aluminum decompn prepn radical radical;supersilyl silyl silyldialuminum structure structure;crystal structure;thermal trinuclear <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Nils Wiberg" itemprop="url" href="/person/199a0f1c93a6e9385b497dbcbece3bf9b/author/0"><span itemprop="name">N. Wiberg</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Thomas Blank" itemprop="url" href="/person/199a0f1c93a6e9385b497dbcbece3bf9b/author/1"><span itemprop="name">T. Blank</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Wolfgang Kaim" itemprop="url" href="/person/199a0f1c93a6e9385b497dbcbece3bf9b/author/2"><span itemprop="name">W. Kaim</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Brigitte Schwederski" itemprop="url" href="/person/199a0f1c93a6e9385b497dbcbece3bf9b/author/3"><span itemprop="name">B. Schwederski</span></a></span>, </span> und <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Gerald. Linti" itemprop="url" href="/person/199a0f1c93a6e9385b497dbcbece3bf9b/author/4"><span itemprop="name">G. Linti</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">European Journal of Inorganic Chemistry</span>, </em> </span>(<em><span>2000<meta content="2000" itemprop="datePublished"/></span></em>)</span>Mon Jul 15 13:41:23 CEST 2019European Journal of Inorganic Chemistry71475--1481Compounds of silicon and homologues, 134. Supersilyl compounds of boron and homologues, 10. Tri(supersilyl)dialanyl (tBu3Si)3Al2· and tetra(supersilyl)cyclotrialanyl (tBu3Si)4Al3· - new stable radicals of a group 13 element from thermolysis of (tBu3Si)4Al22000ESR aluminum decompn prepn radical radical;supersilyl silyl silyldialuminum structure structure;crystal structure;thermal trinuclear The thermolysis of tetra(supersilyl)dialane R2Al-AlR2 (R = SitBu3 = Supersilyl) in heptane or cyclohexane at 50° leads under Al-Al dissocn. reversibly to monoalanyl radicals [R2Al].bul., which could be trapped by hydrogen or iodine (formation of R2AlH, R2AlI). Simultaneously, SiAl dissocn. and elimination of supersilyl radicals tBu3Si.bul. leads irreversibly and slowly to radicals [R2Al-AlR].bul., the existence of which could be established by ESR spectroscopy. The structure was clarified by ab initio calcns. (nearly planar Si2Al-AlSi and linear Al-Al-Si skeleton; short Al-Al distance). By thermolyzing R2Al-AlR2 at 100°, the radical [R4Al3].bul. (ESR spectroscopically detected) and the tetrahedro-tetraalane R4Al4 (NMR spectroscopically seen) are formed via radicals [R3Al2].bul.; the supersilyl radicals tBu3Si.bul., formed at the same time, are stabilized by dimerization to superdisilane R-R and by taking up hydrogen, giving supersilane R-H. According to x-ray structure anal., the Al atoms in [R4Al3].bul. are located at the corners of a triangle; one Al atom is connected with two groups R, the remaining two Al atoms each bind one substituent R in different ways. [on SciFinder(R)]