Synthesis, characterization and structures of diphenyldiaminosilanes bearing bulky substituents on nitrogen

Synthesis and crystal structures of antimony(III) and tin(IV) compounds with an amino-amido-silane ligand

“…The primary coordination site of the lithium atom is the amido nitrogen center. The Li(1)-N(1) bond length (1.909(3) Å) is comparable to those in [(2,6-i Pr 2 C 6 H 3 NLi) 2 SiMe 2 ] 2 (2.050(8) Å) [2], [(2,4,6-Me 3 C 6 H 2 NLi) 2 SiMe 2 ] 2 (1.996(5) Å) [11], and [{ t BuN(Li) 3 }SiPh] 2 (2.04(9) Å) [12]. In the structure of 2 ( Fig.…”

“…The Sn(1)-N(1) bond length in 3 is 2.083 Å. Whereas, the distance between Sn(1) and N (2) (4.686 Å) demonstrates that there is no bonding between Sn(1) and N (2).…”

“…Moreover, Bis(amino)silanes act as very useful chelating ligands received considerable attention [2]. Due to the presence of the silicon atom close to the ligating nitrogen atoms, bis(amino)silane ligands may have a marked influence on the activity of the resulting complex in catalysis [3].…”

“…The Si-N bonds in bis(amino)silanes are rather strong, while it is desirable to attach bulky R groups to the silicon and nitrogen atoms to achieve increased kinetic stability of the metal complexes [4]. Recently, series of metal complexes featuring sterically encumbered bis(amido)silane ligands have been reported, such as [Me 2 -Si(NDipp) 2 SbCl] (Dipp = 2,6-i Pr 2 C 6 H 3 ) [5], [Me 2 Si(NDipp) 2 BiCl] [6] and [Ph 2 Si(NDipp) 2 SnMe 2 ] [7]. These compounds with a variety of backbones were prepared by the salt metathesis reaction of the appropriate dilithiated diamide with metal chloride.…”

Low‐Coordinate Aluminum Amides from Silylanilines and Alkylalanes

“…Elemental analyses were performed by Columbia Analytical Services in Tucson, AZ. DippN(H)SiMe 3 , [21] MesN(H)SiMe 3 [22] and Ph 2 Si{N(H)-Mes} 2 [23] were prepared using modified literature procedures. The new aluminum amides 1-4 were synthesized according to a general method.…”