The chemistry and the stereochemistry of poly (N-alkyliminoalanes)

Synthesis and structure of tetrakis(isopropylimino)bis-[tris(dimethylamino)silylamino]alane

“…1 and selected bond lengths and angles are collected in Table 2. Partial decomposition occurred prior to data collection due to 6 as well as other hexameric iminoalanes such as (HAlN n Pr) 6 [14] and (ClAlN i Pr) 6 [15]. The mechanism for the formation of 1 in this synthetic procedure has not yet been established.…”

From tert‐Butylhydrazine Adducts of AlR3 (R = Me, CMe3) to Oligonuclear AlN Cage Compounds – Evidence for a Hydrazine Twist Across an Al3 Triangle

“…The angles within the four-membered rings are very similar and are close to 90°, while the angles in the six-membered rings are smaller for N-Al-N (112.9°on average) than for Al-N-Al (126.7°), and are presumably influenced by the steric demand of the bulky CMe 3 group on Al. The hexagonal prism is a well-known structural motif for oligomeric organoaluminum imides, as is evident from reported structures such as [HAlNiPr] 6 , [22] [HAlNnPr] 6 , [23] [MeAlNPh] 6 , [24] [HAlN-(CH 2 ) 3 NMe 2 ] 6 [25] etc. Compound 4 is, however, unique in being the first example that features a structural motif with NH rather than NRЈ functionalities that may influence the reactivity of the compound, in particular with respect to further degradation.…”

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

“…15.305 (3) 15.216 (3) 13.447(2) c (Å ) 20.996 (4) 21.059 (4) 17.086 (3) a (8) 82.71 (3) 82.75 (3) 908 b (8) 75.80 (3) 75.89 (3) 91.094 (14) g (8) 75.50 (3) 75.38 (3) Table 2 Selected bond distances (Å ) and bond angles (8) [7] 1.917-1.932 1.923 (4-C 6 H 4 FNAlMe) 4 [24] 1.922-1.951 1.934 (PhNAlPh) 4 [25] 1.900-1.930 1.914 (n-PrNAlH) 6 [8] 1.884-1.972 1.913 (p-CF 3 C 6 H 4 CH 2 NAlH) 6 [22] 1.880-1.980 1.919 (PhCH 2 NAlH) 6 [22] 1.886-1.974 1.918 (PhNAlMe) 6 [26] 1. Compound 2 was prepared from 1 using Me 3 SnF as a fluorinating agent.…”

“…Al-N rings and clusters have been reviewed recently [5]. There are a few reports on aluminum imides (RNAlH) n (n ¼ 4, 6 or 8) [6][7][8] containing hydridic hydrogens bound to aluminum atoms. Compounds of composition (RNAlH) 7 with Al-H bonds are not known.…”