Canadian Journal of Chemistry · 1998 · 45 citations · 1 references
X-ray CrystallographyEngineeringOrganic ChemistryChemistryHeterocycle ChemistryBoropheneInorganic CompoundMonomeric BoronatesMaterials ScienceInorganic ChemistryBiochemistryBoron ComplexesPhenylboronic AcidComparative StudyCrystal Structure DesignCrystallographyInorganic SynthesisHeterocyclicNatural SciencesSynthetic Chemistry
Three boronates have been synthesized by reaction of tridentate azomethine ligands derived from salicylaldehyde with phenylboronic acid. The [5.4.0], [4.4.0], and [4.3.0]heterobicyclic structures obtained have been characterized by NMR spectroscopy and X-ray crystallography, whereby it could be proved that the [4.4.0]heterobicycle is the most stable one. Unexpectedly the salicylideneaminoethanol derivative does not lead to a macrocyclic structure, although molecular modeling reveals high ring strain for the monomeric product that is actually obtained.Key words: boronates, boron complexes, tridentate azomethine ligands, phenylboronic acid, X-ray crystallography.
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