About Fluorides

Fluoride IonThe fluoride ion is the anion of fluorine, F-, and fluorides are compounds which contain this anion. Metallic mono-, di, and trifluorides usually exhibit ionic bonding, pentafluorides and higher exhibit covalent bonding, and tetrafluorides contain bonds with intermediate properties. Ionic-bonded fluorides may be soluble or insoluble: alkali fluorides are soluble, alkali earth metals form insoluble fluorides, transition metal difluorides are often soluble, and trifluorides are insoluble. An exception to some of these trends is beryllium difluoride, which features bonds with partially covalent character and the crystalline structure of a covalently bonded network solid, yet is soluble in water.

Covalently metal-bonded fluorides are typically either gases or volatile liquids or solids, and act chemically as oxidants and fluoridating agents. Tungsten hexafluoride is used routinely to deposit tungsten using chemical vapor deposition methods in semiconductor device fabrication. Uranium hexafluoride is of vital importance to the enrichment processed used to produce nuclear reactor fuels and material for nuclear weapons. Non-metal fluorides also exist, and all are volatile compounds, but their chemical properties vary widely. A number of important superacids contain fluorine, and are typically produced by mixing hydrogen fluoride, itself a highly reactive acid, with a metal fluoride.

Recent Research & Development for Fluorides

Provenance, prevalence and health perspective of co-occurrences of arsenic, fluoride and uranium in the aquifers of the Brahmaputra River floodplain., Das, Nilotpal, Das Aparna, Sarma Kali Prasad, and Kumar Manish , Chemosphere, 2018 Mar, Volume 194, p.755-772, (2018)

Boron difluoride dibenzoylmethane derivatives: Electronic structure and luminescence., Tikhonov, Sergey A., Vovna Vitaliy I., Osmushko Ivan S., Fedorenko Elena V., and Mirochnik Anatoliy G. , Spectrochim Acta A Mol Biomol Spectrosc, 2018 Jan 15, Volume 189, p.563-570, (2018)

Green synthesis of highly dispersed ytterbium and thulium co-doped sodium yttrium fluoride microphosphors for in situ light upconversion from near-infrared to blue in animals., Pu, Yuan, Lin Lifeng, Wang Dan, Wang Jie-Xin, Qian Jun, and Chen Jian-Feng , J Colloid Interface Sci, 2018 Feb 01, Volume 511, p.243-250, (2018)

Influence of dentin pretreatment with 2.5% titanium tetrafluoride on inhibiting caries at the tooth-restoration interface in situ., Bridi, Enrico Coser, Amaral Flávia Lucisano B., Franca Fabiana Mantovani, Turssi Cecilia Pedroso, and Basting Roberta Tarkany , Arch Oral Biol, 2018 Feb, Volume 86, p.51-57, (2018)

Evaluation of fluoride bioremediation and production of biomolecules by living cyanobacteria under fluoride stress condition., Biswas, Gargi, Thakurta Sohini Guha, Chakrabarty Jitamanyu, Adhikari Kalyan, and Dutta Susmita , Ecotoxicol Environ Saf, 2018 Feb, Volume 148, p.26-36, (2018)

Spontaneous Octahedral Tilting in the Cubic Inorganic Cesium Halide Perovskites CsSnX3 and CsPbX3 (X = F, Cl, Br, I)., Yang, Ruo Xi, Skelton Jonathan M., E da Silva Lora, Frost Jarvist M., and Walsh Aron , J Phys Chem Lett, 2017 Sep 18, p.4720-4726, (2017)

Structural Design of Two Fluorine-Beryllium Borates BaMBe2(BO3)2F2 (M = Mg, Ca) Containing Flexible Two-Dimensional [Be3B3O6F3]∞ Single Layers without Structural Instability Problems., Guo, Shu, Jiang Xingxing, Xia Mingjun, Liu Lijuan, Fang Zhi, Huang Qian, Wu Ruofei, Wang Xiaoyang, Lin Zheshuai, and Chen Chuangtian , Inorg Chem, 2017 Oct 02, Volume 56, Issue 19, p.11451-11454, (2017)

Different dominant transitions in holmium and ytterbium codoped oxyfluoride glass and glass ceramics originating from varying phonon energy environments., Liu, Qunhuo, Tian Ying, Wang Caizhi, Huang Feifei, Jing Xufeng, Zhang Junjie, Zhang Xianghua, and Xu Shiqing , Phys Chem Chem Phys, 2017 Nov 15, Volume 19, Issue 44, p.29833-29839, (2017)

Comparison of Citrate Buffer with Sodium Fluoride as Additives in Determining Glycemia., de Toro-Crespo, Maria, Maesa-Marquez Jose M., Sanchez-Margalet Victor, Gonzalez-Rodriguez Concepcion, and Fernandez-Riejos Patricia , Clin Lab, 2017 Nov 01, Volume 63, Issue 11, p.1939-1944, (2017)

Intense 2.7μm emission in Er(3+) doped zinc fluoride glass., Huang, Feifei, Guo Yanyan, Tian Ying, Xu Shiqing, and Zhang Junjie , Spectrochim Acta A Mol Biomol Spectrosc, 2017 May 15, Volume 179, p.42-45, (2017)

Tunable passively Q-switched thulium-fluoride fiber laser in the S+/S band (1450.0 to 1512.0  nm) region using a single-walled carbon-nanotube-based saturable absorber., Ahmad, H, Reduan S A., Zulkifli A Z., and Tiu Z C. , Appl Opt, 2017 May 01, Volume 56, Issue 13, p.3841-3847, (2017)

Upconversion color tuning in Ce(3+)-doped LiYF4:Yb(3+)/Ho(3+)@LiYF4 nanoparticles towards ratiometric fluorescence detection of chromium(III)., Liu, Shijiang, Li Yangjie, Zhang Cheng, Yang Liang, Zhao Tingting, Zhang Ruilong, and Jiang Changlong , J Colloid Interface Sci, 2017 May 01, Volume 493, p.10-16, (2017)

Thulium fiber pumped tunable Ho:CaF2 laser., Němec, Michal, Šulc Jan, Jelínek Michal, Kubeček Václav, Jelínková Helena, Doroshenko Maxim E., Alimov Olimkhon K., Konyushkin Vasilii A., Nakladov Andrei N., and Osiko Vyatcheslav V. , Opt Lett, 2017 May 01, Volume 42, Issue 9, p.1852-1855, (2017)

In vitro enamel erosion and abrasion-inhibiting effect of different fluoride varnishes., Alexandria, Adílis Kalina, Vieira Thiago Isidro, Pithon Matheus Melo, Fidalgo Tatiana Kelly da S., Fonseca-Gonçalves Andréa, Valença Ana Maria Gond, Cabral Lúcio Mendes, and Maia Lucianne Cople , Arch Oral Biol, 2017 May, Volume 77, p.39-43, (2017)

Synthesis and photophysical properties of halogenated derivatives of (dibenzoylmethanato)boron difluoride., Kononevich, Yuriy N., Surin Nikolay M., Sazhnikov Viacheslav A., Svidchenko Evgeniya A., Aristarkhov Vladimir M., Safonov Andrei A., Bagaturyants Alexander A., Alfimov Mikhail V., and Muzafarov Aziz M. , Spectrochim Acta A Mol Biomol Spectrosc, 2017 Mar 15, Volume 175, p.177-184, (2017)