Tetraalkoxyaluminates of nickel(II), copper(II), and copper(I)

Inorganic Chemistry
Michael VeithVolker Huch

Abstract

The syntheses and structural details of tetraisopropoxyaluminates and tetra-tert-butoxyaluminates of nickel(II), copper(I), and copper(II) are reported. Within the nickel series, either Ni[Al(OiPr)4]2.2HOiPr, with nickel(II) in a distorted octahedral oxygen environment, or Ni[Al(OiPr)4]2.py, with nickel(II) in a square-pyramidal O4N coordination sphere, or Ni[(iPrO)(tBuO)3Al]2, with Ni(II) in a quasi-tetrahedral oxygen coordination, has been obtained. Another isolated complex is Ni[(iPrO)3AlOAl(OiPr)3].3py (with nickel(II) being sixfold-coordinated), which may also be described as a "NiO" species trapped by two Al(OiPr)3 Lewis acid-base systems stabilized at nickel by three pyridine donors. Copper(I) compounds have been isolated in three forms: [(iPrO)4Al]Cu.2py, [(tBuO)4Al]Cu.2py, and Cu2[(tBuO)4Al]2. In all of these compounds, the aluminate moiety behaves as a bidentate unit, creating a tetrahedrally distorted N2O2 copper environment in the pyridine adducts. In the base-free copper(I) tert-butoxyaluminate, a dicopper dumbbell [Cu-Cu 2.687(1) A] is present with two oxygen contacts on each of the copper atoms. Copper(II) alkoxyaluminates have been characterized either as Cu[(tBuO)4Al]2, {Cu(iPrO)[(iPrO)4Al]}2, and Cu[(tBuO)3(iP...Continue Reading

Citations

Mar 15, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Shashank MishraStéphane Daniele
Jun 24, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Epsita Ghanti, R Nagarajan
Jun 6, 2009·Chemistry : a European Journal·Gustavo Santiso-QuiñonesIngo Krossing
Feb 13, 2016·Acta Crystallographica. Section E, Crystallographic Communications·Yaokang LvMi Ouyang

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