86780-29-2

Basic information

• Product Name: 4,5,6,7-tetrachloro-2,2-dihydro-2,2,2-triphenyl-1,3,2-benzodioxastibole
• Synonyms: 4,5,6,7-tetrachloro-2,2-dihydro-2,2,2-triphenyl-1,3,2-benzodioxastibole
• CAS NO: 86780-29-2
• Molecular Weight: 598.944
• Mol File: 86780-29-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4,5,6,7-tetrachloro-2,2-dihydro-2,2,2-triphenyl-1,3,2-benzodioxastibole(CAS DataBase Reference)
• NIST Chemistry Reference: 4,5,6,7-tetrachloro-2,2-dihydro-2,2,2-triphenyl-1,3,2-benzodioxastibole(86780-29-2)
• EPA Substance Registry System: 4,5,6,7-tetrachloro-2,2-dihydro-2,2,2-triphenyl-1,3,2-benzodioxastibole(86780-29-2)

Safety Data

• Hazardous Substances Data: 86780-29-2(Hazardous Substances Data)

Upstream product

• 2435-53-2 o-tetrachloroquinone 
• 603-36-1 triphenylantimony 

Downstream Products

• 2435-53-2 o-tetrachloroquinone 
• 603-36-1 triphenylantimony 

Relevant articles and documents

Oxidation of Elemental Antimony by Substituted ortho-Benzoquinones

The oxidation of elemental antimony by the o-quinones Y4C6O2-o (Y = Cl or Br) in diethyl ether gives the unusual antimony(V) products Sb(O2C6Y4)2.5*nEt2O (Y = Cl, n = 1.5; Y = Br, n = 1).The same quinones, and 3,5-di-tert-butyl-1,2-benzoquinone, upon treatment with Sb + 0.5 X2 (X = Br or I) in toluene, give the antimony(III) derivatives Sb(cat)X (cat = substituted catecholate anion).The oxidations are shown by electron spin resonance spectroscopy to proceed via the o-semiquinone intermediates.Adducts of Sb(cat) I with bidentate neutral donors have been prepared.The structure of Sb(dbc)I(bipy) (dbc = 3,5-di-tert-butylcatecholate, bipy = 2,2'-bipyridine) has been shown to be that of a pseudo-octahedral molecule with a stereochemically active lone pair of electrons.Crystal parameters for Sb(dcb)I(bipy)*0.5bipy: triclinic, space group P1, a = 9.779(4), b = 18.554(7), c = 8.944(3) Angstroem, α = 100.94(3), β = 115.11(3), γ = 86.82(4) deg, Z = 2 and R = 0.044 for 3307 unique reflections.

THE REACTION OF TETRACHLORO-o-BENZOQUINONE WITH THE SULFIDES OF TRIPHENYLARSINE AND TRIPHENYLSTIBINE

The reaction of tetrachloro-o-benzoquinone (1) with triphenylarsine sulfide gives a hydrogen-bonded complex of the corresponding hydroquinone and triphenylarsine oxide (5).The same quinone reacts with triphenylstibine sulfide yielding the cyclic adduct (9).In both cases, elemental sulfur is the other product.Possible reaction mechanisms are considered and the structural assignments are based on analytical, chemical and spectroscopic results.