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Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
Published on: September 8, 2016
Neutral and anionic zinc compounds supported by a bis(imino)phenyl NCN ligand
Minh Tho Nguyen1, Bulat Gabidullin, Georgii I Nikonov
1Chemistry Department, Brock University, 1812 Sir Isaac Brock Way, Niagara Region, St Catharines, Ontario L2S 3A1, Canada. gnikonov@brocku.ca.
Abstract:
The new zinc complexes 2,6-(ArN[double bond, length as m-dash]CH)2C6H3ZnBu (6) and 2,6-(ArN[double bond, length as m-dash]CH)2C6H3ZnCl2Li(THF)3 (7), supported by a bis(imino)phenyl NCN pincer ligand, were prepared (Ar = 2,6-iPr2C6H3). The reaction of complex 7 with LiHBEt3 resulted in a hydride transfer to the C[double bond, length as m-dash]N imine group to afford an unusual zinc dimer [η1(C),κ1(Nimine)-2-(ArN[double bond, length as m-dash]CH)-6-(Zn-N(Ar)CH2)C6H3Zn]2 (9). The latter transformation occurs via the formation of compound (η1(C),κ1(N)-2,6-(ArN[double bond, length as m-dash]CH)2C6H3)2Zn (8) which can also be accessed by the reduction of 7 with KC8.
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