ic302325u_si_002.cif (119.64 kB)
New Cu(I)-Ethylene Complexes Based on Tridentate Imine Ligands: Synthesis and Structure
dataset
posted on 2016-02-19, 14:47 authored by Parisa Ebrahimpour, Mairi
F. Haddow, Duncan F. WassA new
bulky facially coordinating N3-donor tach-based
ligand (tach: cis,cis-1,3,5-triaminocyclohexane)
[1: cis,cis-1,3,5-tris(2-fluoro-6-(trifluoromethyl)benzylideneamino)cyclohexane]
has been obtained from the condensation of tach with 3 equiv of the
appropriate benzaldehyde. Reaction of 1 with [Cu(NCMe)4][PF6] gave the complex [(1)Cu(NCMe)][PF6]. Displacement of the acetonitrile ligand is possible with
CO and C2H4 (3–5 bar). Cu(I)-ethylene
complexes of ligands 1 and 2 [2: cis,cis-1,3,5-(mesitylideneamino)cyclohexane]
were prepared successfully by treatment of the ligands with CuBr and
AgSbF6 in the presence of ethylene. These complexes display
reversible complexation of the ethylene molecule under mild changes
to pressure, suggesting possible application in olefin separation
and extraction.