Synthesis and X-ray characterization of the organotriboroxinate salts [Me 3NCH 2CH 2OH][Ph 4B 3O 3] and [NEt 3H][Ph 3B 3O 3(OH)], and the X-ray structure of the triarylboroxine, (4-MeOC 6H 4) 3B 3O 3

Abstract

The synthesis and characterization of the organotriboroxinate salts [Me 3NCH 2CH 2OH][B 3O 4Ph 4] ( 1) and [NEt 3H][B 3O 3Ph 3(OH)] ( 3) are reported. Compound 3 contains the first example of a hybrid inorganic/organic triboroxinate anion. Compounds 1 and 3 have been structurally characterized by single-crystal X-ray diffraction studies, which reveal H-bond ion-pair interactions between anions and cations in both 1 and 3, and additional anion–anion H-bond interactions in 3. Compound 3 exists as a dimer in the solid-state. A single crystal X-ray diffraction study of the triarylboroxine, (4-MeOC 6H 4) 3B 3O 3, is also reported.