To eliminate any confusion with organophosphorus compounds and to be consistent with the recent literature, we will herein refer to the HPO32 anion as phosphite. While IUPAC prefers HPO32 to be named phosphonate, this name is also used for organophosphorus compounds with the general formula R-PO(OH)2 or R-PO(OR)2, where R = alkyl or aryl groups. However, the latter ion is rarely identified in the solid state. According to IUPAC, when the hydrogen atom is directly bonded to the phosphorus atom, it is to be named phosphonate whereas when the anion tautomerizes to the PO2(OH)2 anion, it is named as phosphite. The anion HPO32 has many different names in the literature, including (but not limited to) phosphite, phosphonate, phosphorus(III) oxoanion, oxophosphate(III) and hydridotrioxidophosphate(2-).
Phosphorous acid (H3PO3) is a powerful reducing agent and is exceedingly water soluble. We are currently studying these interactions by exploring the crystalline materials formed via solvothermal syntheses of lanthanides with phosphorous acid. Interactions between these antioxidants and possible metal impurities could potentially have unintended consequences in the processing of petroleum products. Chemical context Phosphonates are commonly employed within the petroleum industry as antioxidants. Structural details of the two compounds are comparatively discussed.ĬCDC reference: 1565300 Supporting information: this article has supporting information at /eġ. The highly symmetrical compound has a layered structure parallel to the ab plane, and is closely related to zirconium(IV) bis(phosphite) solved via powder X-ray diffraction with trigonal (P3) symmetry. and is octahedrally coordinated by O atoms of the phosphite ligands (point group symmetry 3m.). The cerium(IV) cation exhibits site symmetry 3m. The structure of cerium(IV) bis(phosphite), Ce(HPO3)2, has been solved by single-crystal X-ray diffraction and has trigonal (P3m1) symmetry. Weil, Vienna University of Technology, Austria Keywords: crystal structure cerium(IV) phosphite. *Correspondence e-mail: Received 13 July 2017 Accepted 27 July 2017Įdited by M. Villa* Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, Nebraska 68178, USA. Research communications Synthesis and crystal structure of cerium(IV) bis(phosphite) ISSN 2056-9890
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