Dichlorine heptoxide - wikipedia Dichlorine heptoxide Dichlorine heptoxide Names IUPAC name Dichlorine heptoxide Other names Chlorine ( VII ) oxide ; Perchloric anhydride ; ( Perchloryloxy ) chlorane trioxide Identifiers CAS Number 10294 - 48 - 1 3D model ( JSmol ) Interactive image ChEBI CHEBI : 52356 ChemSpider 109884 PubChem CID 123272 InChI InChI = 1S / Cl2O7 / c3 - 1 ( 4, 5 ) 9 - 2 ( 6, 7 ) 8 Key : SCDFUIZLRPEIIH - UHFFFAOYSA - N InChI = 1 / Cl2O7 / c3 - 1 ( 4, 5 ) 9 - 2 ( 6, 7 ) 8 Key : SCDFUIZLRPEIIH - UHFFFAOYAG SMILES O = Cl ( = O ) ( = O ) OCl ( = O ) ( = O ) = O Properties Chemical formula Cl O Molar mass 182.901 g / mol Appearance colorless liquid Density 1900 kg m Melting point − 91.57 ° C ( − 132.83 ° F ; 181.58 K ) Boiling point 82 ° C ( 180 ° F ; 355 K ) Hazards Main hazards oxidizer, contact explosive NFPA 704 0 OX Except where otherwise noted, data are given for materials in their standard state ( at 25 ° C ( 77 ° F ), 100 kPa ). Y verify ( what is ? ) Infobox references Dichlorine heptoxide is the chemical compound with the formula Cl O. This chlorine oxide is the anhydride of perchloric acid. It is produced by the careful distillation of perchloric acid in the presence of the dehydrating agent phosphorus pentoxide : 2 HClO + P O → Cl O + H P O The chlorine ( VII ) oxide can be distilled off from the mixture. It may also be formed by illumination on mixtures of chlorine and ozone. It slowly hydrolyzes back to perchloric acid, which is also hazardous when anhydrous. Contents 1 Structure 2 Chemistry 3 Safety 4 References Structure Cl O is an endothermic molecule, meaning it is intrinsically unstable. 2 Cl O → 2 Cl + 7 O ( ΔH = − 135 kJ / mol ) Cl O is bent with Cl − O − Cl angle of 118.6 ° giving the molecule C symmetry. The terminal Cl − O distances are 1.709 Å and the Cl =O distances are 1.405 Å. In this compound, chlorine exists in its highest formal oxidation state of + 7, although the bonding in this molecule is significantly covalent. Chemistry Dichlorine heptoxide reacts with primary and secondary amines in carbon tetrachloride solution to yield N - perchloryls : 2 RNH 2 + Cl 2O 7 → 2 RNHClO 3 + H 2O 2NH + Cl 2O 7 → 2 R 2NClO 3 + H 2O It also reacts with alkenes to give alkyl perchlorates. For example, it reacts with propene in carbon tetrachloride solution to yield isopropyl perchlorate and 1 - chloro - 2 - propyl perchlorate. Dichlorine heptoxide is a strongly acidic oxide, and in solution it forms an equilibrium with perchloric acid. Safety Although it is the most stable chlorine oxide, Cl O is a strong oxidizer as well as an explosive that can be set off with flame or mechanical shock, or by contact with iodine. Nevertheless, it is less strongly oxidising than the other chlorine oxides, and does not attack sulfur, phosphorus, or paper when cold. It has the same effects on the human body as elemental chlorine, and requires the same precautions. References ^ Jump up to : Holleman, Arnold F. ; Wiberg, Egon ( 2001 ). Inorganic chemistry. Translated by Mary Eagleson ; William Brewer. San Diego : Academic Press. p. 464. ISBN 0 - 12 - 352651 - 5. Jump up ^ Byrns, A.C. ; Rollefson, G.K. ( 1934 ). `` The Formation of Chlorine Heptoxide on Illumination of Mixtures of Chlorine and Ozone ''. Journal of the American Chemical Society. 56 ( 5 ) : 1250 -- 1251. doi : 10.1021 / ja01320a506. Jump up ^ Beard, C.D. ; Baum, K. ( 1974 ). `` Reactions of dichlorine heptoxide with amines ''. Journal of the American Chemical Society. 96 ( 10 ) : 3237 -- 3239. doi : 10.1021 / ja00817a034. Jump up ^ Baum, K... ( 1976 ). `` Reactions of dichlorine heptoxide with olefins ''. The Journal of Organic Chemistry. 41 ( 9 ) : 1663 -- 1665. doi : 10.1021 / jo00871a048. Jump up ^ Lewis, Robert Alan ( 1998 ). Lewis ' dictionary of toxicology. CRC Press. p. 260. ISBN 1 - 56670 - 223 - 2. Jump up ^ Jeanne Mager Stellman, ed. ( 1998 ). `` Halogens and their compounds ''. Encyclopaedia of occupational health and safety ( 4th ed. ). International Labour Organization. p. 104.210. ISBN 92 - 2 - 109817 - 6. Chlorine compounds ClF ClF ClF ClNO ClO Cl O ClO ClO F ClO F Cl O Cl O Cl O Cl O HCl SiCl Oxides Mixed oxidation states Antimony tetroxide ( Sb O ) Cobalt ( II, III ) oxide ( Co O ) Europium ( II, III ) oxide ( Eu O ) Iron ( II, III ) oxide ( Fe O ) Lead ( II, IV ) oxide ( Pb O ) Manganese ( II, III ) oxide ( Mn O ) Silver ( I, III ) oxide ( Ag O ) Triuranium octoxide ( U O ) Carbon suboxide ( C O ) Mellitic anhydride ( C O ) Praseodymium ( III, IV ) oxide ( Pr O ) Terbium ( III, IV ) oxide ( Tb O ) + 1 oxidation state Copper ( I ) oxide ( Cu O ) Dicarbon monoxide ( C O ) Dichlorine monoxide ( Cl O ) Gallium ( I ) oxide ( Ga O ) Lithium oxide ( Li O ) Potassium oxide ( K O ) Rubidium oxide ( Rb O ) Silver oxide ( Ag O ) Thallium ( I ) oxide ( Tl O ) Sodium oxide ( Na O ) Water ( hydrogen oxide ) ( H O ) + 2 oxidation state Aluminium ( II ) oxide ( Al O ) Barium oxide ( Ba O ) Beryllium oxide ( Be O ) Cadmium oxide ( Cd O ) Calcium oxide ( Ca O ) Carbon monoxide ( CO ) Chromium ( II ) oxide ( Cr O ) Cobalt ( II ) oxide ( Co O ) Copper ( II ) oxide ( Cu O ) Europium ( II ) oxide ( Eu O ) Germanium monoxide ( Ge O ) ) Iron ( II ) oxide ( Fe O ) Lead ( II ) oxide ( Pb O ) Magnesium oxide ( Mg O ) Manganese ( II ) oxide ( Mn O ) Mercury ( II ) oxide ( Hg O ) Nickel ( II ) oxide ( Ni O ) Nitric oxide ( N O ) Palladium ( II ) oxide ( Pd O ) Silicon monoxide ( Si O ) Strontium oxide ( Sr O ) Sulfur monoxide ( S O ) Disulfur dioxide ( S O ) Tin ( II ) oxide ( Sn O ) Titanium ( II ) oxide ( Ti O ) Vanadium ( II ) oxide ( V O ) Zinc oxide ( Zn O ) + 3 oxidation state Aluminium oxide ( Al O ) Antimony trioxide ( Sb O ) Arsenic trioxide ( As O ) Bismuth ( III ) oxide ( Bi O ) Boron trioxide ( B O ) Cerium ( III ) oxide ( Ce O ) Dibromine trioxide ( Br O ) Chromium ( III ) oxide ( Cr O ) Dinitrogen trioxide ( N O ) Dysprosium ( III ) oxide ( Dy O ) Erbium ( III ) oxide ( Er O ) Europium ( III ) oxide ( Eu O ) Gadolinium ( III ) oxide ( Gd O ) Gallium ( III ) oxide ( Ga O ) Holmium ( III ) oxide ( Ho O ) Indium ( III ) oxide ( In O ) Iron ( III ) oxide ( Fe O ) Lanthanum oxide ( La O ) Lutetium ( III ) oxide ( Lu O ) Manganese ( III ) oxide ( Mn O ) Neodymium ( III ) oxide ( Nd O ) Nickel ( III ) oxide ( Ni O ) Phosphorus trioxide ( P O ) Praseodymium ( III ) oxide ( Pr O ) Promethium ( III ) oxide ( Pm O ) Rhodium ( III ) oxide ( Rh O ) Samarium ( III ) oxide ( Sm O ) Scandium oxide ( Sc O ) Terbium ( III ) oxide ( Tb O ) Thallium ( III ) oxide ( Tl O ) Thulium ( III ) oxide ( Tm O ) Titanium ( III ) oxide ( Ti O ) Tungsten ( III ) oxide ( W O ) Vanadium ( III ) oxide ( V O ) Ytterbium ( III ) oxide ( Yb O ) Yttrium ( III ) oxide ( Y O ) + 4 oxidation state Americium dioxide ( Am O ) Carbon dioxide ( C O ) Carbon trioxide ( C O ) Cerium ( IV ) oxide ( Ce O ) Chlorine dioxide ( Cl O ) Chromium ( IV ) oxide ( Cr O ) Dinitrogen tetroxide ( N O ) Germanium dioxide ( Ge O ) Hafnium ( IV ) oxide ( Hf O ) Lead dioxide ( Pb O ) Manganese dioxide ( Mn O ) Neptunium ( IV ) oxide ( Np O ) Nitrogen dioxide ( N O ) Osmium dioxide ( Os O ) Plutonium ( IV ) oxide ( Pu O ) Praseodymium ( IV ) oxide ( Pr O ) Protactinium ( IV ) oxide ( Pa O ) Rhodium ( IV ) oxide ( Rh O ) Ruthenium ( IV ) oxide ( Ru O ) Selenium dioxide ( Se O ) Silicon dioxide ( Si O ) Sulfur dioxide ( S O ) Tellurium dioxide ( Te O ) Terbium ( IV ) oxide ( Tb O ) Thorium dioxide ( Th O ) Tin dioxide ( Sn O ) Titanium dioxide ( Ti O ) Tungsten ( IV ) oxide ( W O ) Uranium dioxide ( U O ) Vanadium ( IV ) oxide ( V O ) Zirconium dioxide ( Zr O ) + 5 oxidation state Antimony pentoxide ( Sb O ) Arsenic pentoxide ( As O ) Dinitrogen pentoxide ( N O ) Niobium pentoxide ( Nb O ) Phosphorus pentoxide ( P O ) Protactinium ( V ) oxide ( Pa O ) Tantalum pentoxide ( Ta O ) Vanadium ( V ) oxide ( V O ) + 6 oxidation state Chromium trioxide ( Cr O ) Molybdenum trioxide ( Mo O ) Rhenium trioxide ( Re O ) Selenium trioxide ( Se O ) Sulfur trioxide ( S O ) Tellurium trioxide ( Te O ) Tungsten trioxide ( W O ) Uranium trioxide ( U O ) Xenon trioxide ( Xe O ) Iridium trioxide ( Ir O ) + 7 oxidation state Dichlorine heptoxide ( Cl O ) Manganese heptoxide ( Mn O ) Rhenium ( VII ) oxide ( Re O ) Technetium ( VII ) oxide ( Tc O ) + 8 oxidation state Osmium tetroxide ( Os O ) Ruthenium tetroxide ( Ru O ) Xenon tetroxide ( Xe O ) Iridium tetroxide ( Ir O ) Hassium tetroxide ( Hs O ) Related Oxocarbon Suboxide Oxyanion Ozonide Peroxide Superoxide Oxides are sorted by oxidation state. Category : Oxides Oxygen compounds AgO Al O AmO Am O As O As O Au O B O BaO BeO Bi O BiO Bi O BrO Br O Br O CO CO C O CaO CaO CdO CeO Ce O Ce O ClO Cl O Cl O Cl O Cl O Cl O CoO Co O Co O CrO Cr O Cr O Cr O CsO Cs O CuO D O Dy O Er O Eu O F O F O F O FeO Fe O Fe O Ga O Ga O GeO GeO H O H O H O HfO HgO Hg O Ho O I O I O I O I O In O InO KO K O La O Li O Li O Lu O MgO Mg O MnO MnO Mn O Mn O MoO MoO Mo O NO NO N O N O N O N O NaO Na O Na O NbO NbO Nd O Chemical formulas Retrieved from `` https://en.wikipedia.org/w/index.php?title=Dichlorine_heptoxide&oldid=790835835 '' Categories : Chlorine oxides Oxidizing agents Acid anhydrides Hidden categories : Articles without KEGG source Articles without UNII source Articles containing unverified chemical infoboxes Talk Contents About Wikipedia Čeština Deutsch فارسی Français Italiano 日本 語 Polski Português Română Русский Српски / srpski Srpskohrvatski / српскохрватски தமிழ் తెలుగు Tiếng Việt 中文 Edit links This page was last edited on 16 July 2017, at 12 : 07. 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Question: what is the oxidation state of cl in cl2o7
Answer: +7