title: Preparation, structural characterization, and evaluation of ion-exchange behavior of a new polyoxometalate, [Me2NH2]3[Mo12O40S] in separation of carrier-free90Y from90Sr.
abstract: A new ion-exchanger having chemical formula [Me2NH2]3[Mo12O40S] and belonging to the class of Keggin type polyoxometalate was synthesized and characterized by single-crystal X-ray structure determination. The crystal of the exchanger is rhombohedral, space group R-3 with cell dimensions, a =16.504(18) Å, b =16.504(18)Å (1) Å, c =25.23(3)Å and α=90.00°, β=90.00°, γ=120.00° and Z =6, 3.284gcm-3. The compound behaves as an ion-exchanger and it is significantly stable towards thermal, chemical environments and total radiation dose of 35.0kGy. Radiochemical separation of the short-lived daughter carrier-free9°Y (T1/2=64.08h) from its long-lived parent90Sr (T1/2=29 a) using this material at pH 6.0 with 1.0% EDTA solution as an eluent.
authors.affiliation: Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, India.
authors.forename: Rajesh
authors.initials: R
authors.lastname: Chakraborty
authors.affiliation: Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, India.
authors.forename: Sandipan
authors.initials: S
authors.lastname: Sarkar
authors.affiliation: Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, India.
authors.forename: Siddhartha
authors.initials: S
authors.lastname: Pal
authors.affiliation: Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, India. Electronic address: pabitracc@yahoo.com.
authors.forename: Pabitra
authors.initials: P
authors.lastname: Chattopadhyay
keywords: (90)Sr-(90)Y; Ion-exchanger; Polyoxometalate; Radiochemical separation