266795
Hafnium
foil, thickness 0.02 mm, 99.5% trace metals basis (purity excludes ~2% zirconium)
Synonym(s):
Celtium, Hafnium element
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About This Item
Empirical Formula (Hill Notation):
Hf
CAS Number:
Molecular Weight:
178.49
UNSPSC Code:
12352300
PubChem Substance ID:
EC Number:
231-166-4
MDL number:
InChI key
VBJZVLUMGGDVMO-UHFFFAOYSA-N
InChI
1S/Hf
SMILES string
[Hf]
assay
99.5% trace metals basis (purity excludes ~2% zirconium)
form
foil
resistivity
29.6 μΩ-cm, 0°C
thickness
0.02 mm
bp
4602 °C (lit.)
mp
2227 °C (lit.)
density
13.3 g/cm3 (lit.)
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Preparation Note
3.8 g = 100 × 150 mm
Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Christopher C Underwood et al.
Inorganic chemistry, 52(1), 237-244 (2012-12-19)
This paper describes the hydrothermal chemistry of alkali hafnium fluorides, including the synthesis and structural characterization of five new alkali hafnium fluorides. Two ternary alkali hafnium fluorides are described: Li(2)HfF(6) in space group P31m with a = 4.9748(7) Å and
Yu Gong et al.
Dalton transactions (Cambridge, England : 2003), 41(38), 11706-11715 (2012-08-18)
The isolated group 4 metal oxydifluoride molecules OMF(2) (M = Ti, Zr, Hf) with terminal oxo groups are produced specifically on the spontaneous reactions of metal atoms with OF(2) through annealing in solid argon. The product structures and vibrational spectra
Brian R Dorvel et al.
ACS nano, 6(7), 6150-6164 (2012-06-15)
Nanobiosensors based on silicon nanowire field effect transistors offer advantages of low cost, label-free detection, and potential for massive parallelization. As a result, these sensors have often been suggested as an attractive option for applications in point-of-care (POC) medical diagnostics.
Michael J Sgro et al.
Chemical communications (Cambridge, England), 49(26), 2610-2612 (2013-02-07)
Hf-phosphinoamide cation complexes behave as metal-based frustrated Lewis pairs and bind one or two equivalent of CO2 and in as well can activate CO2 in a bimetallic fashion to give a pseudo-tetrahedral P2CO2 fragment linking two Hf centres.
José Luis Olivares-Romero et al.
Journal of the American Chemical Society, 134(12), 5440-5443 (2012-03-17)
Asymmetric epoxidation of allylic and homoallylic amine derivatives catalyzed by Hf(IV)-bishydroxamic acid complexes is described. Under similar conditions, aldimine and ketimine produced oxaziridines. The sulfonyl group is demonstrated to be an effective directing group for these transformations.
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