Search results for "Dumortierite"

New tubular transition metal oxoanionic derivatives: a systematic approach to condensed phases of the dumortierite family

1993

Abstract An unified synthetic approach has allowed us to isolate a wide set of highly condensed oxoanionic derivatives of transition metals by using solution chemistry procedures. New phases are described [Ni 12+ x H 6−2 x (AsO 4 ) 8 (OH) 6 . Ni 6 (SeO 3 ) 4 (OH) 4 ], and the preparation of other already known [Ni 12+ x H 6−2 x (PO 4 ) 8 (OH) 6 , Ni 3 Te 2 O 6 (OH) 2 ] is significantly simplifi ed. The structure of these derivatives, as well as that of other phases such as M 11 (HPO 3 ) 8 (OH) 6 (M=Zn, Co, Ni), previously characterized by us, can be related to that of the dumortierite mineral. The main features of the tubular channels that characterize this structure and the possibility to …