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334626

Sigma-Aldrich

Tin(II) fluoride

99%

Synonym(s):

Difluorostannylene, Stannous fluoride, Tin bifluoride, Tin difluoride

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About This Item

Empirical Formula (Hill Notation):
F2Sn
CAS Number:
7783-47-3
Molecular Weight:
156.71
EC Number:
231-999-3
MDL number:
MFCD00042540
UNSPSC Code:
12352202
PubChem Substance ID:
24860244
NACRES:
NA.22

Assay

99%

reaction suitability

core: tin
reagent type: catalyst

density

4.57 g/mL at 25 °C (lit.)

SMILES string

F[SnH2]F

InChI

1S/2FH.Sn/h2*1H;/q;;+2/p-2

InChI key

ANOBYBYXJXCGBS-UHFFFAOYSA-L

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Application

Tin(II) fluoride (SnF2) can be used:
  • As an inhibitor of Sn4+ in fabrication of formamidinium tin iodide (FASnI3) perovskite solar cells (PSCs) via SnF2–pyrazine complex formation.
  • As a catalyst in glycerol ketalization, Knoevenagel condensation and aldol-type reactions.
  • In the synthesis of α, β-epoxy ketone from α, α-dibromoacetophenone and aliphatic and aromatic aldehyde via oxidative addition of carbon-halogen bonds.
  • In the stereocontrolled [3 + 3] , [3 + 4], [3 + 5] annulations reactions.

Signal Word

Danger

Hazard Statements

H290,H301,H315,H318,H411

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Met. Corr. 1 - Skin Irrit. 2

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Fabrication of efficient formamidinium tin iodide perovskite solar cells through SnF2-pyrazine complex
Lee SJ, et al.
Journal of the American Chemical Society, 138(12), 3974-3977 (2016)
Mingyu Hu et al.
Nature communications, 11(1), 151-151 (2020-01-11)
State-of-the-art halide perovskite solar cells have bandgaps larger than 1.45 eV, which restricts their potential for realizing the Shockley-Queisser limit. Previous search for low-bandgap (1.2 to 1.4 eV) halide perovskites has resulted in several candidates, but all are hybrid organic-inorganic compositions, raising potential concern regarding
Mukaiyama, T.; Yamaguchi, M.; Kato, J.
Synlett, 1505-1505 (1981)
Tin (II) Fluoride
Weigel LO
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 307(12), 828-835 (2001)
Molander, G. A.; Shubert, D. C.
Journal of the American Chemical Society, 109, 576-576 (1987)
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Articles

Knoevenagel Condensation Reaction

Knoevenagel Condensation is an organic reaction named after Emil Knoevenagel. It is a classic C-C bond formation reaction and a modification of the Aldol Condensation.

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