A tellurite fluoride is a mixed anion compound containing tellurite and fluoride ions. They have also been called oxyfluorotellurate(IV) where IV is the oxidation state of tellurium in tellurite.
Comparable compounds are sulfite fluorides or selenite fluorides.
name | formula | ratio TeO3:F | mw | crystal system | space group | unit cell Å | volume | density | optical | comment | references |
---|---|---|---|---|---|---|---|---|---|---|---|
Li7(TeO3)3F | P63 | a =11.4178 c =4.8433 | band gap 4.75 eV | ||||||||
KTe3O6F | 3:1 | rhombohedral | R3 | a=9.486, c=13.774, Z=6 | [1] | ||||||
ScTeO3F | 239.56 | orthorhombic | Pnma | a = 5.7740 b = 22.062 c = 5.500 | 700.6 | colourless | [2] | ||||
titanium(IV) tellurium(IV) trioxide difluoride | TiTeO3F2 | 1:1 | 361.50 | orthorhombic | Pnma | a = 7.392 b = 16.369 c=6.4886 Z=8 | 785.1 | colourless | [3] | ||
divanadium(IV) ditellurium(IV) heptaoxide difluoride | V2Te2O7F2 | 2:2 | 507.38 | triclinic | P1 | a = 4.882 b = 5.112 c = 7.243 α = 108.17° β = 91.64° γ = 92.63° | 171.4 | green-brown | [3] | ||
CrIIITeO3F | 1:1 | [4] | |||||||||
FeTeO3F | 1:1 | 250.45 | monoclinic | P21/n | a = 5.0667 b = 5.0550 c = 12.397 β = 97.63° Z=4 | 314.72 | green | [4] | |||
Co2TeO3F2 | 1:2 | 331.46 | orthorhombic | Pnma | a=7.3810 b=10.1936 c=5.3013 Z=4 | 398.86 | 5.520 | purple | [5] | ||
Co15F2(TeO3)14 | 14:2 | 3380.35 | trigonal | R3 | a =11.6649 c =27.317 Z=3 | 3219.1 | 5.231 | blue | [6] | ||
Cu7(TeO3)6F2 | 6:2 | triclinic | P1 | a =4.9844 b =9.4724 c =9.958, α =82.318° β =76.275° γ =78.847° | [7] | ||||||
GaTeO3F | 1:1 | monoclinic | P21/n | a = 5.0625 b = 4.9873 c = 12.166 β = 97.952 (13)° Z=4 | 304.22 | colourless | [4] | ||||
RbTe3O6F | 3:1 | ||||||||||
InTeO3F | 1:1 | 309.42 | a = 7.939 b = 5.3867 c = 8.053 β = 91.06° | 344.35 | colourless | [8] [2] | |||||
InTe2O5F | 2:1 | orthorhombic | Cmmm | a = 7.850, b = 27.637, c = 4.098, Z = 4 | 889.1 | [8] | |||||
In3TeO3F7 | 1:7 | orthorhombic | Cmmm | a = 7.850(2) A, b = 27.637(6) A, c = 4.098 | [8] [9] | ||||||
In3(SO4)(TeO3)2F3(H2O) | P212121 | a =8.3115 b =9.4341 c =14.807 | band gap 4.10 eV | [10] | |||||||
BaF2TeF2(OH)2 | Pmn21 | SHG ~3 × KDP | fluorotellurite | [11] | |||||||
Ba2Ga3F3(Te6F2O16) | a =8.8753 b =8.8753 c =11.655 | band gap 4.4 eV | [12] | ||||||||
Ba(MoOF2)(TeO4) | 1:2 | 478.87 | monoclinic | P21/c | a 5.4281 b 10.1306 c 12.3186 β 116.145° Z=4 | 608.09 | 5.231 | colourless | [13] | ||
Ba(MoO2F)2(TeO3)2 | 2:2 | 782.42 | orthorhombic | Aba2 | a=12.5605 b=11.0264 c=7.2858 Z=4 | 1009.1 | 5.150 | colourless | [14] | ||
Ba(WOF2)(TeO4) | 566.77 | monoclinic | P21/c | a 5.4483 b 10.0179 c 12.3134 β 115.422(6)° Z=4 | 607.00 | 6.202 | green | [13] | |||
Pb2Al3F3(Te6F2O16) | orthorhombic | P4/mbm | a =8.7627 b =8.7627 c =11.235 | band gap 4.1 eV | [12] | ||||||
PbVTeO5F | 484.73 | orthorhombic | Pbca | a=9.8976 b=8.0685 c=13.070 | 1043.8 | 6.169 | orange; birefringence 0.142 at 590 nm | ||||
Pb2Ga3F3(Te6F2O16) | orthorhombic | P4/mbm | a =8.8439 b =8.8439 c =11.580 | band gap 4.2 eV | [12] | ||||||
Bi4TeO4F2(TeO3)2(SeO3)2 | 2:2 | 1670.64 | monoclinic | P21/c | a=7.0304 b=6.6782 c=17.355 β=106.155 Z=2 | 782.66 | 7.089 | colourless | [15] | ||
Monofluorophosphate is an anion with the formula PO3F2−, which is a phosphate group with one oxygen atom substituted with a fluoride atom. The charge of the ion is −2. The ion resembles sulfate in size, shape and charge, and can thus form compounds with the same structure as sulfates. These include Tutton's salts and langbeinites. The most well-known compound of monofluorophosphate is sodium monofluorophosphate, commonly used in toothpaste.
The borate fluorides or fluoroborates are compounds containing borate or complex borate ions along with fluoride ions that form salts with cations such as metals. They are in the broader category of mixed anion compounds. They are not to be confused with tetrafluoroborates (BF4) or the fluorooxoborates which have fluorine bonded to boron.
The fluoride phosphates or phosphate fluorides are inorganic double salts that contain both fluoride and phosphate anions. In mineralogy, Hey's Chemical Index of Minerals groups these as 22.1. The Nickel-Strunz grouping is 8.BN.
Mixed-anion compounds, heteroanionic materials or mixed-anion materials are chemical compounds containing cations and more than one kind of anion. The compounds contain a single phase, rather than just a mixture.
The iodate fluorides are chemical compounds which contain both iodate and fluoride anions (IO3− and F−). In these compounds fluorine is not bound to iodine as it is in fluoroiodates.
The sulfate fluorides are double salts that contain both sulfate and fluoride anions. They are in the class of mixed anion compounds. Some of these minerals are deposited in fumaroles.
A selenite fluoride is a chemical compound or salt that contains fluoride and selenite anions. These are mixed anion compounds. Some have third anions, including nitrate, molybdate, oxalate, selenate, silicate and tellurate.
The borotellurates are heteropoly anion compounds which have tellurate groups attached to boron atoms. The ratio of tellurate to borate reflects the degree of condensation. In [TeO4(BO3)2]8- the anions are linked into a chain. In [TeO2(BO3)4]10− the structure is zero dimensional with isolated anions. These arrangements of oxygen around boron and tellurium can have forms resembling silicates. The first borotellurates to be discovered were the mixed sodium rare earth compounds in 2015.
The boroselenites are heteropoly anion chemical compounds containing selenite and borate groups linked by common oxygen atoms. They are not to be confused with the boroselenates with have a higher oxidation state for selenium, and extra oxygen. If selenium is replaced by sulfur, it would be a borosulfite. Boroselenites are distinct from selenoborates in which selenium replaces oxygen in borate, or perselenoborates which contain Se-Se bonds as well as Se-B bonds. The metal boroselenites were only discovered in 2012.
The nitrate selenites are mixed anion compounds containing distinct nitrate (NO3−)and selenite (SO32−) groups. The compounds are colourless unless coloured by cations.
Fluoride nitrates are mixed anion compounds that contain both fluoride ions and nitrate ions. Compounds are known for some amino acids and for some heavy elements. Some transition metal fluorido complexes that are nitrates are also known. There are also fluorido nitrato complex ions known in solution.
A selenate selenite is a chemical compound or salt that contains selenite and selenate anions (SeO32- and SeO42-). These are mixed anion compounds. Some have third anions.
A tellurite tellurate is chemical compound or salt that contains tellurite and tellurate anions [TeO3]2- [TeO4 ]2-. These are mixed anion compounds, meaning the compounds are cations that contain one or more anions. Some have third anions. Environmentally, tellurite [TeO3]2- is the more abundant anion due to tellurate's [TeO4 ]2- low solubility limiting its concentration in biospheric waters. Another way to refer to the anions is tellurium's oxyanions, which happen to be relatively stable.
Iodate nitrates are mixed anion compounds that contain both iodate and nitrate anions.
Selenidostannates are chemical compounds which contain anionic units of selenium connected to tin. They can be considered as stannates where selenium substitutes for oxygen. Similar compounds include the selenogermanates and thiostannates. They are in the category of chalcogenidotetrelates or more broadly chalcogenometallates.
Lithium tellurite is an inorganic compound, with the chemical formula Li2TeO3. It crystallises in the monoclinic crystal system, with space group C2/c. It can be prepared by reacting lithium oxide, lithium hydroxide or lithium carbonate with tellurium dioxide. It reacts with lithium fluoride at high temperatures in a 3:1 stoichiometric ratio to obtain Li7(TeO3)3F.
Selenite sulfates are mixed anion compounds containing both selenite (SeO32−) and sulfate (SO42−) anions.
A fluorooxoiodate or fluoroiodate is a chemical compound or ion derived from iodate, by substituting some of the oxygen by fluorine. They have iodine in the +5 oxidation state. The iodine atoms have a stereochemically active lone-pair of electrons. Many are non-centrosymmetric, and are second harmonic generators (SHG) of intense light shining through them. They are under investigation as materials for non-linear optics, such as for generating ultraviolet light from visible or infrared lasers.
Iodate sulfates are mixed anion compounds that contain both iodate and sulfate anions. Iodate sulfates have been investigated as optical second harmonic generators, and for separation of rare earth elements. Related compounds include the iodate selenates and chromate iodates.
When values of birefingence are very high, the property is termed giant birefringence which more generically is called giant optical anisotropy. Values for giant birefringence exceed 0.3. Much bigger numbers are termed "colossal birefringence". These are achieved using nanostructures.