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.
name | formula | mw | crystal system | space group | unit cell Å | volume | density | comment | reference |
---|---|---|---|---|---|---|---|---|---|
L-Argininium | L-Arg2+•F−•NO3− | triclinic | P1 | a=5.0130 b=10.6161 c=11.0352 α=87.471 β=86.038 γ=78.157 Z=2 | [1] | ||||
2L-Arg2+•F−•3NO3−•HF | orthorhombic | P212121 | a=7.3960 b=12.8672 c=26.990 Z=4 | [1] | |||||
L-histidine | L-His2+•F−•NO3− | [1] | |||||||
[Cr(NH3)5F](NO3)2 | [2] | ||||||||
hexakis(1H-imidazole)-cobalt(ii) fluoride nitrate tetrahydrate | [Co(Im)6][F·NO3•(H2O)4] | hexagonal | P63/m | a 8.972 c 21.077 Z=2 | 1469.3 | 1.402 | pink | [3] | |
[Co(NH3)4(OH)F]NO3 | [4] | ||||||||
[Co(NH3)5F](NO3)2 | [5] | ||||||||
[Co(NH3)6]F(NO3)2 | [4] | ||||||||
[Co(en)2F2]NO3 | [4] | ||||||||
[As(ONO2)4]+[AsF6]− | pale yellow; hydroscopic | [6] | |||||||
[Zr2F3OH(NO3)2(H2O)5]2+ | in solution | [7] | |||||||
SnF2(ONO2)2 | [6] | ||||||||
SnF3(ONO2) | stable < 40°C; hydroscopic | [6] | |||||||
SbF(ONO2)4 | [6] | ||||||||
SbF3(ONO2)2 | [6] | ||||||||
Xenon fluoride nitrate | FXeONO2 | monoclinic | a = 4.6663 b = 8.799 c = 9.415 β = 90.325° | 386.6 | 3.648 | ||||
CsFHONO2 | [8] | ||||||||
[HfF4NO3]− | in solution | [7] | |||||||
[HfF3(NO3)2]− | in solution | [7] | |||||||
Hg3O2(NO3)F | orthorhombic | Pnma | a=7.547 b=10.990 c=6.9906 | birefringence Δn = 0.23 @ 1064 nm | [9] | ||||
Pb3F5NO3 | triclinic | P1 | a 7.3796 b 12.147 c 16.8549, α 100.46° β 90.076° γ 95.517° | layered; stable to 450°C | [10] [11] | ||||
Pb(OF)Cu3(SeO3)2(NO3) | trigonal | R3m | a 6.6973 c 18.5548 Z=3 | 720.75 | 5.175 | yellow; stable to 400°C | [12] | ||
PbCdF(SeO3)(NO3) | orthorhombic | Pca21 | a=11.121 b=10.366 c=5.3950 | NLO 2.6×KDP; band gap 4.42 eV | [13] | ||||
BaPb2F5NO3 | [14] | ||||||||
[(UO2)4F13][Sr3(H2O)8](NO3)·H2O | 1814.13 | triclinic | P1 | a = 10.793, b = 10.918, c = 13.231 α = 92.570°, β = 109.147°, γ = 92.778° Z = 2. | 1468.1 | 4.105 | yellow | [15] |
Anions that interact weakly with cations are termed non-coordinating anions, although a more accurate term is weakly coordinating anion. Non-coordinating anions are useful in studying the reactivity of electrophilic cations. They are commonly found as counterions for cationic metal complexes with an unsaturated coordination sphere. These special anions are essential components of homogeneous alkene polymerisation catalysts, where the active catalyst is a coordinatively unsaturated, cationic transition metal complex. For example, they are employed as counterions for the 14 valence electron cations [(C5H5)2ZrR]+ (R = methyl or a growing polyethylene chain). Complexes derived from non-coordinating anions have been used to catalyze hydrogenation, hydrosilylation, oligomerization, and the living polymerization of alkenes. The popularization of non-coordinating anions has contributed to increased understanding of agostic complexes wherein hydrocarbons and hydrogen serve as ligands. Non-coordinating anions are important components of many superacids, which result from the combination of Brønsted acids and Lewis acids.
The tetrafluoroammonium cation is a positively charged polyatomic ion with chemical formula NF+
4. It is equivalent to the ammonium ion where the hydrogen atoms surrounding the central nitrogen atom have been replaced by fluorine. Tetrafluoroammonium ion is isoelectronic with tetrafluoromethane CF
4, trifluoramine oxide ONF
3 and the tetrafluoroborate BF−
4 anion.
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.
A carbonate fluoride, fluoride carbonate, fluorocarbonate or fluocarbonate is a double salt containing both carbonate and fluoride. The salts are usually insoluble in water, and can have more than one kind of metal cation to make more complex compounds. Rare-earth fluorocarbonates are particularly important as ore minerals for the light rare-earth elements lanthanum, cerium and neodymium. Bastnäsite is the most important source of these elements. Other artificial compounds are under investigation as non-linear optical materials and for transparency in the ultraviolet, with effects over a dozen times greater than Potassium dideuterium phosphate.
The borate carbonates are mixed anion compounds containing both borate and carbonate ions. Compared to mixed anion compounds containing halides, these are quite rare. They are hard to make, requiring higher temperatures, which are likely to decompose carbonate to carbon dioxide. The reason for the difficulty of formation is that when entering a crystal lattice, the anions have to be correctly located, and correctly oriented. They are also known as borocarbonates. Although these compounds have been termed carboborate, that word also refers to the C=B=C5− anion, or CB11H12− anion. This last anion should be called 1-carba-closo-dodecaborate or monocarba-closo-dodecaborate.
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.
An oxyhydride is a mixed anion compound containing both oxide O2− and hydride ions H−. These compounds may be unexpected as the hydrogen and oxygen could be expected to react to form water. But if the metals making up the cations are electropositive enough, and the conditions are reducing enough, solid materials can be made that combine hydrogen and oxygen in the negative ion role.
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.
Nitrate chlorides are mixed anion compounds that contain both nitrate (NO3−) and chloride (Cl−) ions. Various compounds are known, including amino acid salts, and also complexes from iron group, rare-earth, and actinide metals. Complexes are not usually identified as nitrate chlorides, and would be termed chlorido nitrato complexes.
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.
Borate nitrates are mixed anion compounds containing separate borate and nitrate anions. They are distinct from the boronitrates where the borate is linked to a nitrate via a common oxygen atom.
The borate bromides are mixed anion compounds that contain borate and bromide anions. They are in the borate halide family of compounds which also includes borate fluorides, borate chlorides, and borate iodides.
The borate iodides are mixed anion compounds that contain both borate and iodide anions. They are in the borate halide family of compounds which also includes borate fluorides, borate chlorides, and borate bromides.
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.
Sulfidogermanates or thiogermanates are chemical compounds containing anions with sulfur atoms bound to germanium. They are in the class of chalcogenidotetrelates. Related compounds include thiosilicates, thiostannates, selenidogermanates, telluridogermanates and selenidostannates.
Iodate nitrates are mixed anion compounds that contain both iodate and nitrate anions.
Vanadium dioxide fluoride is the inorganic compound with the formula VO2F. It is an orange diamagnetic solid. The compound adopts the same structure as iron(III) fluoride, with octahedral metal centers and doubly bridging oxide and fluoride ligands. It is prepared by the reaction of vanadium pentoxide and vanadium(V) oxytrifluoride:
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.