02373nas a2200301 4500008004100000022001400041245011000055210006900165260000800234490000700242520133400249653001901583653002201602653003701624653001601661653002901677653001201706653002601718653001501744653006101759100001901820700001901839700001901858700002401877700002101901700001901922856013001941 2017 eng d a1477-922600aUnprecedented solvent induced inter-conversion between monomeric and dimeric silylene-zinc iodide adducts0 aUnprecedented solvent induced interconversion between monomeric  cSEP0 v463 a

Usually, when a silylene reacts with a transition metal Lewis acid, it forms an adduct which could be either monomeric or dimeric. However, we present here that a silylene, [PhC(NtBu)(2)SiN(SiMe3)(2)] can form both monomeric [PhC(NtBu)(2)Si{N(SiMe3)(2)} -> ZnI2]center dot THF (1) and dimeric [{PhC(NtBu)(2)}(N(SiMe3)(2))SiZnI,(mu-I)](2) (2) adducts upon reaction with ZnI2. The formation of 1 and 2 relies upon the solvent used for the reaction or crystallization. When the crystallization is carried out in THF complex 1 is formed, however, when the reaction and crystallization are performed in acetonitrile complex 2 is obtained. Both 1 and 2 were structurally authenticated and the nature of the Si-Zn bond in these complexes was determined by quantum chemical calculations. In addition, a spontaneous inter-conversion between 1 and 2 just by changing the solvents has been also observed; a feature presently not known for silylene-transition metal Lewis adducts.

 

10aBis(Silylene )10aCarbene Complexes10aCrystal -structure Determination10aDative bond10aLewis acid base reaction10aLigands10aMain- group compounds10aReactivity10aSilicon(II) Bis(Trimethylsilyl)Amide; Carbonyl-Complexes1 aYadav, Sandeep1 aSangtani, Ekta1 aDhawan, Diksha1 aGonnade, Rajesh, G.1 aGhosh, Debashree1 aSen, Sakya, S. uhttps://library.ncl.res.in/content/unprecedented-solvent-induced-inter-conversion-between-monomeric-and-dimeric-silylene-zinc