A Facile Route to Group 13 Difluorodiorganometalates: [nBu4N][R2MF2] (M=Al, Ga, In)

Abstract

A facile synthesis utilizing tetra-n-butylammonium hydrogen difluoride and Group 13 alkyl compounds leads to the soluble salts 1 - 4. Compound 1 is the smallest difluoro-diorganoaluminate so far characterized. The corresponding gallium and indium derivatives 3 and 4 are not sensitive to moisture.

Synthesis and structural characterization of an unusual heptameric aluminum imide and the surface fluorination products of the Al7N7 and Al4C4N4 cores

“…In this paper we report on a heptamer (R ¼ 1-adamantyl) rather than the more common hexamer. If the Ph groups in (PhCH 2 NAlH) 6 [20] are replaced by 1-adamantyl groups, calculations give a minimum C Á Á Á C distance of 2.95 Å for two adjacent 1-adamantyl groups. Compared with the van der Waals radius for carbon (1.7 Å ), however, the distance of 2.95 Å is obviously too short.…”

“…The remainder is non-replaced hydrogen. The Al-F bond distances are 1.63 Å for F(1), F(2), and F (3), and 1.52 Å for F (20), F(21), F (22) and F (23). Both are shorter than the Al-F bond length (terminal) in [(Me 3 Si) 3 CAlF 2 ] 3 (1.657-1.681 Å ) [15] due to the incomplete fluorination of 2.…”

“…There are some compounds available containing both terminal and bridging or only bridging and others with Al-F-M (M ¼ Li, Na, K, Ti, Zr) [18] building units are reported. The number of compounds having only terminal Al-F bonds is limited [19][20][21]. However, no chemistry on aggregates containing only terminal Al-F bonds is known so far.…”

Preparation of fluorine compounds of groups 13 and 14: a study case for the diagonal relationship of aluminum and germanium

“…[13] À154.8 (n-Bu 4 N)((Me 3 Si) 3 CMeAlF 2 ) [13] À145.93 (t-BuNCH 2 AlF) 4 [11] À155.7 [(AlF) 6 (AlNMe 3 ) 2 (CCH 2 CH 2 SiMe 3 ) 6 ] [9] À181.5…”

“…LGeF (13) and LGe=S(F) (16) in good yield. The latter compound was also accessible by the reaction of LGeF (13) with elemental sulfur.…”