1,3-Difluoro-trisulfane-1,1-difluoride

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1,3-Difluoro-trisulfane-1,1-difluoride
Names
IUPAC name
(Trifluoro-λ4-sulfanyl)sulfanyl thiohypofluorite
Identifiers
3D model (JSmol)
PubChem CID
Properties
F4S3
Molar mass 172.17 g·mol−1
Melting point −62 °C (−80 °F; 211 K)
Boiling point 94 °C (201 °F; 367 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

1,3-Difluoro-trisulfane-1,1-difluoride is an inorganic molecular substance consisting of sulfur in a low oxidation state with fluorine. The structural formula is SF3SSF containing a chain of three sulfur atoms. At one end there are three fluorine atoms bound, and at the other one. The formula can also be written S3F4. It has a melting point of -62°C and a boiling point of 94°C. As a gas, it is unstable and breaks up to form SSF2 and SF4. [1]

The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation of an atom in a chemical compound. Conceptually, the oxidation state, which may be positive, negative or zero, is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic, with no covalent component. This is never exactly true for real bonds.

Fluorine Chemical element with atomic number 9

Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As the most electronegative element, it is extremely reactive, as it reacts with almost all other elements, except for helium and neon.

Disulfur difluoride chemical compound

Disulfur difluoride is a halide of sulfur, with the chemical formula S2F2.

SF3SSF is produced by the condensation of sulfur difluoride and an isomer of SSF2. [2] The reaction S3F4 SSF2 + SF2 uses 6 kJ/mol. [3]

Sulfur difluoride chemical compound

Sulfur difluoride is an inorganic compound with the chemical formula SF2. It can be generated by the reaction of sulfur dichloride and potassium fluoride or mercury(II) fluoride at low pressures:

Possible isomers of S3F4 include FSSF2SF, which has a spontaneous fluorine migration to yield F2SSSF2 which in turn spontaneously fragments to SF2 and SSF2. [4]

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Chlorine monofluoride chemical compound

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Sodium periodate chemical compound

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Tellurate Compound containing an oxyanion of tellurium

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Thallium(I) oxide chemical compound

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Chloryl fluoride chemical compound

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Chemical transport reaction

In chemistry, a chemical transport reaction describes a process for purification and crystallization of non-volatile solids. The process is also responsible for certain aspects of mineral growth from the effluent of volcanoes. The technique is distinct from chemical vapor deposition, which usually entails decomposition of molecular precursors (e.g. SiH4 → Si + 2H2) and which gives conformal coatings. The technique, which was popularized by Harald Schäfer, entails the reversible conversion of nonvolatile elements and chemical compounds into volatile derivatives. The volatile derivative migrates throughout a sealed reactor, typically a sealed and evacuated glass tube heated in a tube furnace. Because the tube is under a temperature gradient, the volatile derivative reverts to the parent solid and the transport agent is released at the end opposite to which it originated (see next section). The transport agent is thus catalytic. The technique requires that the two ends of the tube (which contains the sample to be crystallized) be maintained at different temperatures. So-called two-zone tube furnaces are employed for this purpose. The method derives from the Van Arkel de Boer process which was used for the purification of titanium and vanadium and uses iodine as the transport agent.

Konrad Seppelt German chemist

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Thionyl tetrafluoride chemical compound

Thionyl tetrafluoride is an inorganic compound gas with the formula SOF4. It is also known as sulfur tetrafluoride oxide. The shape of the molecule is a distorted trigonal bipyramid. The oxygen is found on the equator. The atoms on the equator have shorter bond lengths than the fluorine atoms on the axis. The sulfur oxygen bond is 1.409Å. A S-F bond on the axis has length 1.596Å and the S-F bond on the equator has length 1.539Å. The angle between the equatorial fluorine atoms is 112.8°. The angle between axial fluorine and oxygen is 97.7°. The angle between oxygen and equatorial fluorine is 123.6° and between axial and equatorial fluorine is 85.7°. The fluorine atoms only produce one NMR line, probably because they exchange positions.

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Chromium pentafluoride is the inorganic compound with the chemical formula CrF5. It is a red volatile solid that melts at 30 °C, which easily hydrolyses to chromium(III) and chromium(VI). It has the same crystal structure as vanadium pentafluoride. It is the highest known chromium fluoride, since the hypothetical chromium hexafluoride has not yet been synthesized.

Heptasulfur imide chemical compound

Heptasulfur imide is the inorganic compound with the formula S7NH. It is a pale yellow solid that is, like elemental sulfur, highly soluble in carbon disulfide. The compound, which is only of academic interest, is representative of a family of sulfur imides Sx(NH)y.

Difluorophosphate chemical compound

Difluorophosphate or difluorodioxophosphate or phosphorodifluoridate is an anion with formula PO
2
F
2
. It has a single negative charge and resembles perchlorate (ClO
4
) and monofluorosulfonate (SO3F) in shape and compounds. These ions are isoelectronic, along with tetrafluoroaluminate, phosphate, orthosilicate, and sulfate. It forms a series of compounds. The ion is toxic to mammals as it causes blockage to iodine uptake in the thyroid. However it is degraded in the body over several hours.

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Margot Becke-Goehring was a Professor of Inorganic Chemistry at the University of Heidelberg and she was the first female rector of a university in West Germany - the Heidelberg University. She was also the director of the Gmelin Institute of Inorganic Chemistry of the Max Planck Society that edited the Gmelins Handbuch der anorganischen Chemie. She studied Chemistry in Halle (Saale) and Munich, and she finished her doctorate and habilitation at the University of Halle. For her research on the chemistry of main-group elements, she was awarded Alfred Stock Memorial Prize. One of her most notable contributions to inorganic chemistry was her work on the synthesis and structure of poly(sulfur nitride), which was later discovered to be the first non-metallic superconductor. For her success in editing the Gmelins Handbuch der anorganischen Chemie, she received the Gmelin-Beilstein memorial coin.

Difluorodisulfanedifluoride

1,1,1,2-tetrafluorodisulfane, also known as 1,2-difluorodisulfane 1,1-difluoride or just difluorodisulfanedifluoride (FSSF3) is an unstable molecular compound of fluorine and sulfur. The molecule has a pair of sulfur atoms, with one fluorine atom on one sulfur, and three fluorine atoms on the other. It has the uncommon property that all the bond lengths are different. The bond strength is not correlated with bond length but is inversely correlated with the force constant (Badger's rule). The molecule can be considered as sulfur tetrafluoride in which a sulfur atom is inserted into a S-F bond.

A fluoroanion is an anion that contains an element and fluorine atoms. They are also known as complex fluorides. They can occur in salts, or in solution, but not as pure acids. They often contain elements in higher oxidation states. They mostly can be considered as fluorometalates which are a subclass of halometalates.

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Vanadium oxydichloride chemical compound

Vanadium oxydichloride is the inorganic compound with the formula VOCl2. One of several oxychlorides of vanadium, it is a hygroscopic green solid. It is prepared by comproportionation of vanadium trichloride and vanadium(V) oxides:

Rhodium trifluoride chemical compound

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References

  1. Willner, Helge (July 1984). "Chalkogenfluoride in niedrigen Oxydationsstufen. IX. Darstellung und Charakterisierung von SF3SSF" [Chalcogen fluorides in lower degrees of oxidation. IX. Preparation and characterization of 1,3-difluorotrisulfane 1,1-difluoride (SF3SSF)]. Zeitschrift für anorganische und allgemeine Chemie. 514 (7): 171–178. doi:10.1002/zaac.19845140721.
  2. Berry, F. J. (1984). "Chapter 6. O, S, Se, Te". Annual Reports Section "A" (Inorganic Chemistry). 81: 145. doi:10.1039/IC9848100137.
  3. Lösking, O.; Willner, H.; Baumgärtel, H.; Jochims, H. W.; Rühl, E. (November 1985). "Chalkogenfluoride in niedrigen Oxydationsstufen. X Thermochemische Daten und Photoionisations-Massenspektren von SSF2, FSSF, SF3SF und SF3SSF". Zeitschrift für anorganische und allgemeine Chemie. 530 (11): 169–177. doi:10.1002/zaac.19855301120.
  4. Jug, Karl; Iffert, Rüdiger (April 1989). "SINDO1 study of sulphur isomers and sulphur fluorine compounds". Journal of Molecular Structure: THEOCHEM. 186: 347–359. doi:10.1016/0166-1280(89)87055-1.