Hafnium tetrabromide

Base Information

• Chemical Name: Hafnium tetrabromide
• CAS No.: 13777-22-5
• Molecular Formula: Br4Hf
• Molecular Weight: 498.106
• European Community (EC) Number: 237-416-9
• DSSTox Substance ID: DTXSID2065628
• Wikipedia: Hafnium_tetrabromide,Hafnium(IV) bromide
• Wikidata: Q4096870
• Mol file: 13777-22-5.mol

Synonyms:Hafnium tetrabromide;Hafnium bromide;tetrabromohafnium;13777-22-5;Hafnium bromide (HfBr4);Hafnium(IV) bromide;EINECS 237-416-9;HfBr4;Br4Hf;Br4-Hf;Hafnium(IV) bromide, anhydrous;DTXSID2065628;MFCD00049460;Q4096870

Chemical Property of Hafnium tetrabromide

Chemical Property:

• Melting Point: 424 °C(lit.)
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• PSA: 0.00000
• Density: g/cm³
• LogP: 3.38240
• Sensitive.: moisture sensitive
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 499.61581
• Heavy Atom Count: 5
• Complexity: 19.1

Purity/Quality:

98%,99%, ^*data from raw suppliers

Hafnium(IV) bromide, anhydrous, 98% (99.7%-Hf) ^*data from reagent suppliers

Safty Information:

• Hazard Codes: C
• Statements: 34
• Safety Statements: 26-27-36/37/39-45

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: Br[Hf](Br)(Br)Br

Technology Process of Hafnium tetrabromide

There total 8 articles about Hafnium tetrabromide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 44.5%

hafnium tetrachloride (13499-05-3) → hafnium tetrabromide (13777-22-5)

Guidance literature:

With hydrogen bromide; In diethyl ether; n-heptane; byproducts: LiCl, B2H6, H2; (Ar); ZrCl4 and LiBH4 were shaken in a Schlenk tube, dissolving in n-heptane at -78°C in vacuo, HBr was bubbled for 6 h at ambient temp.,stirring 12 h under HBr atmosphere; filtn., washed with n-heptane, dried in vacuo, sublimed at 190°C for 15 h, elem. anal.;

DOI:10.1039/DT9900001813

Reference yield:

zirconyl chloride (7699-43-6) + bromine (7726-95-6) → hafnium tetrabromide (13777-22-5)

Guidance literature:

With sugar charcoal; In neat (no solvent); heating to 700 - 800°C;; sublimation;;

DOI:10.1021/ja01203a042

Reference yield:

hafnium tribromide (13782-96-2) → hafnium tetrabromide (13777-22-5) + hafnium dibromide

Guidance literature:

In neat (no solvent); heating;;

DOI:10.1021/ja01203a042

upstream raw materials:

bromine

pyrographite

zirconyl chloride

hafnium tribromide

Downstream raw materials:

Hf₂Br₄(C₆H₅P(CH₃)2)2(P(CH₃)2C₆H₅)2

[HfBr₄(o-C₆H₄(PPh₂)2)]

hafnium hydroxide

hydrogen bromide

Refernces

• 1、 Schumb, W. C.,Morehouse, C. K.. "". . p. 2696 - 2697. Retrieved 1947.
• 2、 Calderazzo, Fausto,Pallavicini, Piersandro,Pampaloni, Guido. "Arene Derivatives of Zirconium(II) and Hafnium(II)". . p. 1813 - 1818. Retrieved 1990.