Synthesis, characterization and reactivity of lanthanide (ii) poly (pyrazol-1-yl) borates ('LN'='SM', 'EU' and 'YB') ; fluorescence studies of ['EU' l2 (thf) 2] [l=b ('PZ') 4, 'HB' ('PZ') 3] ; x-ray crystal structures of ['EU'[b ('PZ') 4] (thf) 2] and ['YB' (b ('PZ') 4) 3]. 'C IND.2''H IND.5'oh - Domingos, A; Marcalo, J; Marques, Nélson; Matos, A P; Galvao, A; Isolani, Paulo Celso; Vicentini, Geraldo; Zinner, Klaus (Polyhedron, 1995)