Inorganic Chemistry, Vol.38, No.20, 4447-4454, 1999
Indium fluoroalkoxide compounds
Reactions of indium amide complexes with fluorinated alcohols give indium fluoroalkoxide complexes. In[N-t-Bu(SiMe3)](3) reacts with 3 equiv of (CF3)Me2COH to give the homoleptic alkoxide dimer [In{mu-OCMe2(CF3)}-{OCMe2(CF3)}(2)](2), but reactions involving the more acidic alcohols (CF3)(2)MeCOH and (CF3)(2)CHOH yield products containing t-BuNH2, which is derived from the amide ligands. Thus, In[N-t-Bu(SiMe3)](3) reacts with (CF3)(2) MeCOH to give In[OCMe(CF3)(2)](3)(H2N-t-Bu) and with (CF3)(2)CHOH to yield In[OCH(CF3)(2)](3)(H2N-t-Bu)(3) and [H3N-t-Bu] [In(OCH(CF3)(2))(4)(H2N-t-Bu)]. Reactions of (CF3)(2)MeCOH and (CF3)(2)CHOH with In(tmp)(3) (tmp = the anion derived from 2,2,6,6-tetramethylpiperidine) and In(NEt2)(3) are less complicated. In(tmp)(3) reacts with 3 equiv of (CF3)(2)CHOH to give In[OCH(CF3)(2)](3)(Htmp) and with 4 equiv of (CF3)(2)CHOH or (CF3)(2)MeCOH to yield the salt compounds [H(2)tmp][In{OCR(CF3)(2)}(4)] (R = H, Me). Trigofial bipyramidal [H2NEt2][In(OCH(CF3)(2))(4)(HNEt2)] and octahedral mer-In[OCMe(CF3)(2)](3)(py)(3) are isolated from reactions involving In(NEt2)(3). Crystal structure determinations of [In{mu-OCMe2(CF3)}{OCMe2(CF3)(2)}(4)], In[OCMe(CF3)(2)}(4)(H2N-t-Bu] [In(OCH(CF3)(2)}(4)(H2N-t-Bu)]. EtOEt, In[OCH(CF3)(2)](3)(Htmp), [H(2)tmp] [In{OCMe(CF3)(2)}(4)], In[OCMe(CF3)(2)](3)(py)(3), and [H2NEt2][In{OCH(CF3)(2)}(4)(HNEt2)] were carried out.
Keywords:CHEMICAL-VAPOR-DEPOSITION;RAY CRYSTAL-STRUCTURE;OXIDE THIN-FILMS;COMPLEXES;ADDUCT;AMINE;PRECURSORS;GALLIUM;AMIDE;DIMER