Iodine monochloride

Iodine monochloride

Chembox new
Name = Iodine monochloride
ImageFile = Iodine-monochloride-2D.png ImageName = Iodine monochloride
ImageFile1 = Iodine-monochloride-3D-vdW.png ImageName1 = Iodine monochloride
IUPACName = iodine(I) chloride
OtherNames = iodine chloride
Section1 = Chembox Identifiers
SMILES = ICl
CASNo = 7790-99-0
RTECS =
Section2 = Chembox Properties
Formula = ICl
MolarMass = 162.35 g/mol
Appearance = red to brown liquid
Density = 3.10 g/cm3
Solubility = hydrolysis
Solvent = other solvents
SolubleOther = carbon disulfide
acetic acid
pyridine
MeltingPt = 27°C (α-form)
BoilingPt = 97.4°C (370.6 K)
Section3 = Chembox Structure
CrystalStruct =
Dipole =
Section7 = Chembox Hazards
ExternalMSDS = [http://www.jtbaker.com/msds/englishhtml/i2760.htm External MSDS]
MainHazards = corrosive
RPhrases =
SPhrases =
Section8 = Chembox Related
Function = interhalogen compounds
OtherFunctn = Chlorine monofluoride, bromine monochloride, iodine monobromide

Iodine monochloride is the chemical compound with the formula ICl. It is a red-brown compound that melts near room temperature. Because of the difference in the electronegativity of iodine and chlorine, ICl is highly polar and behaves as a source of “I+.”

Preparation of iodine monochloride entails simply combining the halogens in a 1:1 molar ratio, according to the equation:I2 + Cl2 → 2 ICl

When chlorine gas is passed through iodine crystals, one observes the brown vapor of iodine monochloride. Dark brown iodine monochloride liquid is collected. Excess chlorine converts iodine monochloride into iodine trichloride in a reversible reaction::ICl + Cl2 → ICl3

Polymorphs

ICl has two polymorphs; α-ICl which exists as black needles (red by transmitted light) with a melting point of 27.2 °C, and β-ICl which exists as black platelets (red-brown by transmitted light) with a melting point 13.9 °C.Brisbois, R. G.; Wanke, R. A.; Stubbs, K. A.; Stick, R. V. “Iodine Monochloride” Encyclopedia of Reagents for Organic Synthesis, 2004 John Wiley & Sons. DOI: 10.1002/047084289X.ri014]

Uses

ICl is a useful reagent in organic synthesis. It is used as a source of electrophilic iodine in the synthesis of certain aromatic iodides. [OrgSynth | author = Wallingford, V. H.; Krüger, P. A. | title = 5-Iodo-anthranilic Acid | collvol = 2 | collvolpages = 349 | year = 1943 | prep = cv2p0349] It also cleaves C-Si bonds.

ICl will also add to the double bond in alkenes to give chloro-iodo alkanes.:RCH=CHR’ + ICl → RCH(I)-CH(Cl)R’When such reactions are conducted in the presence of sodium azide, the iodo-azide RCH(I)-CH(N3)R’ is obtained. [OrgSynth | author = Padwa, A.; Blacklock, T.; Tremper, A. | title = 3-Phenyl-2H-Azirine-2-carboxaldehyde | collvol = 6 | collvolpages = 893 | prep = cv6p0893]

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Monochloride — may refer to: Aluminium monochloride, the metal halide with the formula AlCl Bromine monochloride, also called bromine(I) chloride, bromochloride, and bromine chloride, BrCl Iodine monochloride, the chemical compound with the formula ICl. It is a …   Wikipedia

  • iodine value — ▪ chemistry also called  Iodine Number,         in analytical chemistry, measure of the degree of unsaturation of an oil, fat, or wax; the amount of iodine, in grams, that is taken up by 100 grams of the oil, fat, or wax. Saturated oils, fats,… …   Universalium

  • Interhalogen — The halogens react with each other to form interhalogen compounds.The general formula of most interhalogen compounds is XYn, where n = 1, 3, 5 or 7 (X is the less electronegative of the two halogens). They are all prone to hydrolysis, and ionise… …   Wikipedia

  • Organoiodine compound — Organoiodine compounds are organic compounds that contain one or more carbon–iodine bonds. They occur widely in organic chemistry, but are relatively rare in nature. The thyroxine hormones are organoiodine compounds that are required for health… …   Wikipedia

  • chloriodized oil — Chlorinated and iodized peanut oil formed by the chemical addition of iodine monochloride; formerly used for radiography of sinuses and bronchi. SYN: iodochlorol. * * * an iodine monochloride addition product of vegetable oil, a radiopaque medium …   Medical dictionary

  • Chloramine-T — IUPAC name N chloro 4 methylbenzenesulfonamide, sodium salt …   Wikipedia

  • List of inorganic compounds — Tentative listing related to this page, inorganic compounds by element (presently under construction), as well as . This list is not necessarily complete or up to date ndash; if you see an article that should be here but isn t (or one that… …   Wikipedia

  • wijs method — ˈvīs noun Usage: usually capitalized W Etymology: after Jacob J. Alexander Wijs died 1942 Dutch analytical chemist : a method for determining the iodine number (as of an oil or fat) that consists in adding a solution of iodine monochloride in… …   Useful english dictionary

  • ICL — The initialism ICL may have several meanings: * Image Cash Letter exchange (USA), is the process through a law passed in October 2004, called Check 21, which permits banks to pass images back and forth rather than actual checks. This improves… …   Wikipedia

  • Caesium chloride — Caesium chloride …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”