Different picrate coordination modes along the lanthanide series: synthesis and molecular structure of two isomorphous compounds [`Ln IND. 2´`(pic) IND. 4´`(TDTD) IND. 3´`(`H IND. 2´`O´) IND. 2´] `(pic) IND. 2´`(`H IND. 2´`O´) IND. 2´(Ln=Tm, Lu; pic=picrate; TDTD=trans-1,4-dithiane-S,S´-dioxide) - Ayala, J D; Bombieri, G; Del Pra, A; Fantoni, A; Vicentini, Geraldo (Inorganica Chimica Acta, 1998)