caa a22 4500 606181350 CHVBK 20210128100810.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10876-014-0768-3 doi (NATIONALLICENCE)springer-10.1007/s10876-014-0768-3 Synthesis, Crystal Structure, Vibrational and Optical Properties of (Hdea)4(V7O19F)∙0.42H2O, an Original (V7O19F)4− Cluster Oxyfluoride [Elektronische Daten] [Issam Omri, Mohsen Graia, Tahar Mhiri] Synthesis, crystal structure, IR and Raman spectroscopies and optical analysis are reported for a new fluorovanadate with organic cations (Hdea)4(V7O19F)∙0.42H2O (dea: diethylamine). The title compound crystallizes in orthorhombic system, space group P212121, a=11.486 (5)Å, b=14.779 (5)Å, c=23.243 (5)Å, Z=4, V=3,946 (2)Å3, R=0.025 with 6,936 reflections. The atomic arrangement can be described as an alternation of inorganic and organic layers. The anionic layer is built up of original clusters (V7O19F)4− which are composed of three VO5F octahedra and four VO4 tetrahedra combined via shared edges and corners. The cohesion between the fluorovanadate groups, organic cations and water molecules is provided by a network hydrogen-bonding. The IR and Raman spectra exhibit characteristic bands of all groups present in the structure. The optical band gap is determined to be 2.5eV by UV-Vis-T90+ diffuse reflectance spectra, which revealed the nature of semiconductor. Springer Science+Business Media New York, 2014 Fluorovanadate nationallicence X-ray diffraction nationallicence IR and Raman spectroscopies nationallicence Diethylamine nationallicence Omri Issam Laboratoire physico-chimie de l'état solide, Faculté de Sciences, Université de Sfax, BP 1171, 3038, Sfax, Tunisia aut Graia Mohsen Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences, Université de Tunis El Manar, El Manar, 2092, Tunis, Tunisia aut Mhiri Tahar Laboratoire physico-chimie de l'état solide, Faculté de Sciences, Université de Sfax, BP 1171, 3038, Sfax, Tunisia aut Journal of Cluster Science Springer US; http://www.springer-ny.com 26/3(2015-05-01), 815-825 1040-7278 26:3<815 2015 26 10876 https://doi.org/10.1007/s10876-014-0768-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10876-014-0768-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Omri Issam Laboratoire physico-chimie de l'état solide, Faculté de Sciences, Université de Sfax, BP 1171, 3038, Sfax, Tunisia aut NATIONALLICENCE 700 1- Graia Mohsen Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences, Université de Tunis El Manar, El Manar, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Mhiri Tahar Laboratoire physico-chimie de l'état solide, Faculté de Sciences, Université de Sfax, BP 1171, 3038, Sfax, Tunisia aut NATIONALLICENCE 773 0- Journal of Cluster Science Springer US; http://www.springer-ny.com 26/3(2015-05-01), 815-825 1040-7278 26:3<815 2015 26 10876