bisligand noun1 •Any bidentate ligandAldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich The presence of the dihydro-Smith subunit is exploited in the preparation of bisligand systems 61 and 63 by reaction of DAPC 54 with bis-alkene 6 or "U"-shaped 62, respectively. formsbisligands