geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Structures of Bi14WO24 and Bi14MoO24 from neutron powder diffraction data


, : Structures of Bi14WO24 and Bi14MoO24 from neutron powder diffraction data. Acta Crystallographica. Section B, Structural Science 55(Pt 3): 306-312

The (isomorphous) structures of Bi(14)WO(24), tetradecabismuth tungsten tetracosaoxide, and Bi(14)MoO(24), tetradecabismuth molybdenum tetracosaoxide, have been solved and refined using neutron powder diffraction data in the space group I4/m. The metal-atom array is fully ordered in terms of composition, and in terms of atomic positions deviates only slightly from a fluorite-type delta-Bi(2)O(3)-related parent structure. Three independent O-atom sites (accounting for 70 out of 78 O atoms in the unit cell) are also very close to fluorite-type parent positions. The remaining two O-atom sites, which coordinate W, exhibit partial occupancies and displacive disorder, neither of which could be better modelled by lowering of symmetry. The W site is coordinated by four O atoms in highly distorted tetrahedral coordination, the tetrahedron necessarily being orientationally disordered on that site. Nonetheless, the structure appears to be chemically reasonable.

US$29.90

PMID: 10927371


Other references

Whitcomb, R.F.; Hicks, A.L.; Blocker, H.D.; Lynn, D.E., 1994: Biogeography of leafhopper specialists of the shortgrass prairie: evidence for the roles of phenology and phylogeny in determination of biological diversity. A specific case analysis of the leafhopper assemblages associated with the 2 dominant grasses of shortgrass prairie in the USA, blue grama (Bouteloua gracilis) and buffalograss (Buchloe dactyloides), is presented. Phylogenies constructed for the 3...

Bahn, A.K.; Chandler, C.A., 1961: Alcoholism in psychiatric clinic patients. In an intensive study of characteristics of all Maryland residents discharged from outpatient psychiatric clinics during the period 1 July-30 June 1959, data were collected on the symptom of excessive drinking. A minimum of 17% of the adult patien...

Beall J.L.; Morgan W.A.; Young Susan W., 1998: Depositional facies and diagenesis of hydrocarbon bearing Wolfcampian carbonate gravity flow deposits, Howard Glasscock Field, Midland Basin, Howard County, Texas. Publication - West Texas Geological Society 98-103(1998

Eivazi-Ziaei, J.; Dastgiri, S.; Kermani, I.Asvadi.; Nikanfar, A.; Esfahani, A.; Sanaat, Z.; Sadeghi-Bazargani, H.; Vaez, J., 2012: Age pattern of the occurrence of breast cancer in the northwest of Iran. Breast cancer represents 27% of the cancers and 19% of the cancer deaths in female population. The aim of this study was to document the age pattern of the incidence of breast cancer in Iranian female population in the northwest region of the coun...

Mal'tsev, E.V., 1977: Hypothetic "tumorous immunity" of the lens. Oftalmologicheskii Zhurnal 32(3): 231-233

Barceló Lucerga, B.; Salto Hernández, L.; Maraña González, G.; Menéndez Sánchez, J.; Inchausti Teja, J.L.; Ortiz Berrocal, J., 1970: Carcinoma and the isolated thyroid nodule. Revista Clinica Espanola 117(2): 169-174

Niwa, T.; Hasegawa, R.; Ryuge, M.; Kawase, M.; Kondoh, Y.; Taniguchi, H., 2012: Benefits and risks associated with the R100 high frequency oscillatory ventilator for patients with severe hypoxaemic respiratory failure. High frequency oscillatory ventilation has been shown to improve oxygenation of patients with severe respiratory failure. This prospective study examined the potential benefits and risks of the latest generation high frequency oscillatory ventilat...

Jain, S.P.; Awasthi, D.C.; Bhatnagar, K.K., 1974: Re-anastomosis of vas deferens in man (an experimental study). Journal of the Indian Medical Association 62(3): 78 Passimassim-78 Passimassim

Thiele, S.; Britz, S.; Landsiedel, L.; Wallaschofski, H.; Lohmann, T., 2008: Short-term changes in hsCRP and NT-proBNP levels in hypertensive emergencies. Hypertension is associated with high cardiovascular risk. Both hsCRP and NT-proBNP also have been associated with elevated cardiovascular risk, at least in the long term. Much less is known about the short-term changes in these markers, for exampl...

Tribouilloy, C.; Lucas, G.; Rey, J.L.; Trojette, F.; Gallet, B.; Choquet, D.; Lesbre, J.P., 1998: Transesophageal echocardiography before electric cardioversion for supraventricular arrhythmia. The aim of this prospective study was to assess the risks of electrical shock cardio-version in the treatment of supraventricular rhythm disorders when administered under effective-dose but short duration anticoagulation in patients with no intrac...