Intercalation of primary diamines in the lamellar niobate HNb/sub 3/O/sub 8/ X H/sub 2/O

Journal Article · Tue Dec 01 04:00:00 EST 1987 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(87)90254-4· OSTI ID:5523008

Nedjar, R; Borel, M M; Raveau, B

The intercalation of alkyl diamines in the protonic oxide HNb/sub 3/O/sub 8/ x H/sub 2/O is quantitative for the diamines H/sub 2/N-(CH/sub 2/)/sub n/-NH/sub 2/ with n ranging from 2 to 10. All the intercalated oxides (H/sub 3/N-(CH/sub 2/)/sub n/-NH/sub 3/)/sub 0.5/Nb/sub 3/O/sub 8/ x yH/sub 2/O are hydrated at room temperature; they can be easily and reversibly dehydrated to the oxides (H/sub 3/N-(CH/sub 2/)/sub n/-NH/sub 3/)/sub 0.5/Nb/sub 3/O/sub 8/. The structural behavior of those compounds is compared to that of the alkyldiammonium titanoniobates (H/sub 3/N-(CH/sub 2/)/sub n/-NH/sub 3/)/sub 0.5/TiNbO/sub 5/. An interpretation of their structural properties is given which takes into account of the tendency of amines to assume an orientation transverse to oxide layers, the conformation of the amine chains, and the tendency to form dense organic layers.

• Research Organization: ISMRa-Universite, Caen, France
• OSTI ID: 5523008
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 71:2; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMINES
CLATHRATES
CRYSTAL STRUCTURE
DATA
EXPERIMENTAL DATA
HYDRATES
HYDROGEN COMPOUNDS
INFORMATION
LATTICE PARAMETERS
NIOBATES
NIOBIUM COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS