Preparation and Structural Characterization of the First Germylaluminate

Abstract

The reaction of LiGePh3 with Me2AlCl in ether yields the trisgermylaluminate Li(OEt2)n[(Ph3Ge)3AlMe]. The Ge−Al bond length is 2.520 Å and the geometry around the Al center almost tetrahedral.

Reactions of Group 13 and 14 Hydrides and Group 1, 2, 13 and 14 Organyl Compounds with (tert‐Butylimino)(2,2,6,6‐tetramethylpiperidino)borane

“…The B−Sn bond length in 26 of 2.295(2) Å corresponds to a single bond as found, for example, in Me 3 Sn(Me 2 N)B−B(NMe 2 )SnMe 3 [2.276(2) Å] 28. The two B1−N bonds differ by 0.087(3) Å, the longer bond involves the B−N bond to the tmp group which shows a crown configuration and whose C1−N1−C5 plane includes a twist angle with the N1−B1−N2 plane of 85.2°.…”

Reaction of a Germylene, Stannylene, or Plumbylene with Trimethylaluminum and Trimethylgallium: Insertion into Al–C or Ga–C Bonds, a Reversible Metal–Carbon Insertion Equilibrium, and a New Route to Diplumbenes

“…They have an extensive chemistry and have been shown to undergo a wide variety of reactions, some of which resemble those of carbenes. − They have played a central role in the development of modern main group chemistry, and more recently, they have attracted interest because of their reactivity toward small molecules such as H 2 and for their catalytic activity. , Nonetheless, their reactions with other heavier main group organometallic derivatives such as group 13 metal alkyls are poorly studied, and the number of well-characterized species with bonds between the heavier members of group 14 elements germanium, tin, and lead and group 13 metals is relatively low. The majority of the latter have been obtained via simple salt metathesis reactions of group 13 chlorides with lithium salts of organic group 14 molecules, and a number of Ge–Al, − Ge–Ga, − and Sn–Ga , bonded species have been obtained by this route. There also exist group 13–14 Lewis acid–base adducts, in which the group 14 metalylene behaves as a donor to a trivalent group 13 metal compound.…”

Synthesis and Structures of some Trisorganylstannyl Boranes and Triorganylstannyl Borates [1]

“…It was obtained from lithium trimethylstannide and 1,2-bis(diisopropylamino-chloro-boryl)ethene. Recently, we described the molecular structures of several bis-(amino)stannylboranes [5] as well those of stannyldiboranes(4) and stannyl-triboranes(5) [6]. In this context we observed an unusual shortening of the B±Sn distance with increasing coordination number at the boron atom.…”

“…Lithium(tetrakis-tetrahydrofuran)(tris-trimethylstannyl)-[N-(methyl)anilino]borate (6): A stirred solution of Me 3 SnLi (21.1 mmol) in THF was cooled to ±70°C and a solution of dichloro(N-methylanilino) borane [11] (1.2 g, 6.2 mmol) in hexane (25 ml) was rapidly added. The resulting solution showed only a single 11 B resonance at ±13.2 ppm (d, 1 J BSn = 580 Hz).…”