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258202

Sigma-Aldrich

Hafnium(IV) chloride

98%

Synonym(s):

Hafnium tetrachloride, Tetrachlorohafnium

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About This Item

Linear Formula:
HfCl4
CAS Number:
13499-05-3
Molecular Weight:
320.30
EC Number:
236-826-5
MDL number:
MFCD00011034
UNSPSC Code:
12352302
PubChem Substance ID:
24855637
NACRES:
NA.23

vapor pressure

1 mmHg ( 190 °C)

Quality Level

100

Assay

98%

form

powder

mp

432 °C (lit.)

solubility

H2O: decomposes(lit.)

SMILES string

Cl[Hf](Cl)(Cl)Cl

InChI

1S/4ClH.Hf/h4*1H;/q;;;;+4/p-4

InChI key

PDPJQWYGJJBYLF-UHFFFAOYSA-J

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Application

Hafnium (IV) chloride can be used to catalyze the direct ester condensation of carboxylic acids with alcohols effectively.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H290 - H314

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1

Supplementary Hazards

EUH014

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 3

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Direct condensation of carboxylic acids with alcohols catalyzed by hafnium (IV) salts.
Ishihara K, et al.
Science, 290.5494, 1140-1142 (2000)
Visualization of the cytoskeletal elements in tissue culture cells by bloc-staining with hafnium chloride after rapid freezing and freeze-substitution fixation.
T Hatae et al.
Journal of electron microscopy, 33(2), 186-190 (1984-01-01)
Guoguang Liu et al.
Biomacromolecules, 9(3), 949-953 (2008-02-15)
The feasibility of a previously established method based on ozonolysis and hydrogenation reactions for the production of 9-hydroxynonanoic acid from oleic acid has been demonstrated. Metal catalyzed lactonization conditions have been used to convert 9-hydroxynonanoic acid into 1,11-dioxacycloicosane-2,12-dione, which is
Lutz Ackermann et al.
Organic & biomolecular chemistry, 5(12), 1975-1978 (2007-06-07)
Two distinct economical catalysts for intramolecular hydroaminations of electronically unactivated alkenes with basic amines are described, which are based on (a) group 4 metal halides under basic reaction conditions or (b) Brønsted-acid organocatalysts.

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Solid-State Metathesis Materials Synthesis

In the last two decades, a new method termed solid-state metathesis (SSM) has been developed to synthesize compounds that are often difficult to produce conventionally.

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