The ligand N,N"-bis(2-hydroxybenzylidene)diethylenetriamine (SalenN(3)H(3))
was used to prepare the compound SalenN(3)H{B(OMe2)}(2) (1) which could, i
n turn, be used in the formation of SalenN(3)H{B(OSiPh3)(2)}(2) (2). For co
mparative purposes, the compounds Salben{B(OSiPh3)(2)}(2) (3) (Salben = N,N
'-butylenebis(2-hydroxybenzylideneamine), Salen(Bu-t){B(OSiPh3)(2)}(2) (4)
(Salen(Bu-t) = N,N'-ethylenebis(3,5-di-tert-butyl-2-hydroxy-benzylideneamin
e) and Salben(Bu-t){B(OSiPh3)(2)}(2) (5) (Salben(Bu-t) = N,N'-butylenebis(3
,5-di-tert-butyl-2-hydroxybenzylideneamine) were prepared. In reactions whe
re the siloxide is (HO)(2)SiPh2, unique dimeric siloxide-bridged compounds
result, [Salpten(Bu-t){B(O2SiPh2}](2) (6) and [SalenN(3)H{B(O2SiPh2)}](2) (
7). Compound 6 possesses a zeolite-like cavity having a volume of 157 Angst
rom(3). All Of the compounds were characterized by physical (mp, analyses)
and spectroscopic techniques (H-1 and B-11 NMR, IR) and, in the case of 1,
3, 4, and 6, by X-ray crystallography.