As a proposal for an undergraduate second or third year inorganic laboratory course, the present paper describes the preparation of three representative boron complexes: potassium tetrafluoroborate, pyridoxin boron complex and potassium bis(oxalato)borate. The complexes are characterised by infrared and multinuclear magnetic resonance spectroscopy (1H, 11B and 19F) where isotopic effects are demonstrated.
Resumen pt: Tomar o tema alfabetizacao de criancas surdas, atualmente, e direcionar o olhar para a pratica docente que demanda rumos para alem do espaco escolar. Que...
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