Synthesis and structure of inorganic and organometallic N,N′-bis(3, 5-di-tert-butylsalicylidene)ethylenediamine yttrium complexes

The utility of the chloride precursor [(salen')Y(mu-Cl)(THF)](2), 1 (salen' = N,N'-bis(3,5-di-tert-butylsalicylidene)ethylenediamine), in preparing amide, aryloxide, and organometallic derivatives of this ancillary ligand system is described. 1 reacts with KN(SiMe3)(2) to form (salen')Y[N(SiMe3)(2)](THF), 2, but does not readily form an aryloxide derivative by reaction with LiOAr' (OAr' = 2,6-di-tert-butylphenoxide). However, (salen')Y(OAr'), 3, can be obtained by reaction of Y(OAr')(3) with H(2)salen' and crystallizes from toluene-THF as (salen')Y(OAr')(THF), 4, 4 can also be prepared by reaction of 2 with HOAr' in THE The hexafluoroacetyl-acetonate (hfac) complex, (salen')Y(hfac)(THF)(2), 5, and the organometallic derivative, (salen')Y(C5Me5), 6, can be prepared by reaction of 1 with Na(hfac) and KC5Me5, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.