NDLI: $CCl_{3}^{+}$ and $CBr_{3}^{+}$ salts with the $[Al(OR^{F})_{4}]^{−}$ and $[(^{F}RO)_{3}Al–F–Al(OR^{F})_{3}]^{−}$ anions $(R^{F}$ = $C(CF_{3})

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Krossing, Ingo Lehner, Anna J. Trapp, Nils Scherer, Harald
Description	Author Affiliation: Lehner AJ ( Albert-Ludwigs-Universität Freiburg, Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum FMF, Freiburg, Germany.)
Abstract	The $CX_{3}^{+}$ salts $[CCl_{3}]^{+}[Al(OR^{F})_{4}]^{−}1,$ $[CCl_{3}]^{+}[(R^{F}O)_{3}Al–F–Al(OR^{F})_{3}]^{−}2,$ $[CBr_{3}]^{+}[Al(OR^{F})_{4}]^{−}3,$ $[CBr_{3}]^{+}[(R^{F}O)_{3}Al–F–Al(OR^{F})_{3}]^{−}4$ $(R^{F}$ = $C(CF_{3})_{3})$ were prepared in 56 to 85% yield from $CX_{4}$ (X = Cl, Br) and the corresponding silver salts (weight balance, NMR , IR , X-ray structure of 1). The most convenient solvent for the preparation of 1 and 2 is $SO_{2}ClF$ but for 3 and 4 it is $SO_{2}.$ The reactions are complete after about three days stirring at −30 to −40 °C. The salts are stable for weeks in solution at −40 °C and stable for a few hours at RT in the solid state. In $SO_{2}ClF$ (1, 2) or $SO_{2}$ (3, 4) solution they decompose slowly at −20 °C and within several hours at RT; in general the $CBr_{3}^{+}$ salts are more stable than the $CCl_{3}^{+}$ homologues. The decomposition products were assigned as $CCl_{3}F$ and primarily $CBr_{2}F_{2}$ (which likely forms as a Lewis acid induced disproportionation product of the initial $CBr_{3}F).$ The C-X vibrations of the salts were found in the expected range and the assignments were made based on experimental and calculated data. The IR spectrum of a $CBr_{3}^{+}$ salt is for the first time reported here.
ISSN	14779226
Issue Number	7
Volume Number	40
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2011-02-21
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Aluminum Chemistry Organometallic Compounds Anions Computer Simulation Models, Molecular Molecular Structure Chemical Synthesis Salts Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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