The Nickel ternary chalcogenides are a class of chemical compounds that contains nickel, a chalcogenide, and another element. Nickel forms a series of double nickel oxides with other elements, which may be termed "nickelates". These double nickel oxides are not listed on this page. There are also many well defined double compounds with sulfur, selenium and tellurium which are listed here.
formula | name | colour | structure | production | references |
---|---|---|---|---|---|
NH4NiS5 | ammonium nickel sulphide | black | NH4 polysulfide+NiSO4 | [1] [2] | |
K2Ni3S4 | potassium nickel tetrasulfide | bronze yellow | Fddd a=10.023 b=26.074 c=5.704 | NiSO4 K2CO3 S | [1] [3] [4] |
K2Ni11S10 | potassium nickel decasulfide | dark metallic green | NiO+KCNS | [1] J. Milbauer | |
Na2Ni3S4 | sodium nickel tetrasulfide | dark yellow | NiSO4 Na2CO3 S | [1] R. Schneider | |
KNi2S2 | potassium dinickel disulfide | orange yellow | Ni foil, S, K at 723K | [5] [6] | |
K2Ni3Se4 | potassium nickel tetraselenide | gold | Fddd a=10.468 b=26.496 c=5.995 | [7] [8] | |
KNi2Se2 | potassium dinickel diselenide | purple-red | I4/mmmtetragonal a=3.909, c=13.4142 | Ni foil, Se shot, K at 723K | [5] [9] |
CsNi2Se2 | caesium dinickel diselenide | tetragonal a=3.988, c=14.419 | heat elements | [10] | |
TlNi2Se2 | Thallium dinickel diselenide | gold metallic | tetragonal | heat elements together in closed quartz tube | [11] |
Rb2Ni3S4 | rubidium nickel tetrasulphide | metallic greenish gold | Fmmm orthorhombic a=9.901 Å, b=13.606 Å and c=5.861 Z=4 layered; ferromagnetic only after water immersion | [7] [12] | |
Rb2Ni3Se4 | rubidium nickel tetraselenide | golden metallic | Fddd orthorhombic a = 10.555 Å, b = 27.588 Å, c = 6.031 Å, Z = 8 layered; ferromagnetic only after water immersion | Rb2CO3 S Ni | [13] |
Cs2Ni3S4 | cesium nickel tetrasulphide | greenish gold | Fmmm a=10.038 b=14.552 c=5.934 | [8] [13] | |
Cs2Ni3S4 | cesium nickel tetrasulphide | gold | Fmmm a=10.540 b=14.624 c=6.194 | [8] | |
Cs0.9Ni3.1Se3 | Hexagonal P63/m a = 9.26301(4) Å and c = 4.34272(2) Å | quasi-one-dimensional electric conductor | [14] | ||
BaNi4S5 | Barium nickel pentasulfide | bronze yellow | NiSO4 K2CO3 S | [1] R. Schneider; I. and L. Bellucci | |
Pb2Ni3S2 | lead nickel disulfide | melt 790° | PbS Ni | [15] W Guertler; W Guertler H Schack | |
(Ni,Fe)9S8 | Pentlandite | bronze yellow melt 870 | [15] T. Scheerer | ||
Fe2Ni2S4 | ferrous nickel tetrasulfide | melt 840 | [16] K Bornemann | ||
Fe2Ni2S3 | ferrous nickel trisulfide | stable over 575°, melt 886, | [17] K Bornemann | ||
Fe3Ni4S5 | ferrous nickel pentasulfide | below 575 | [17] K Bornemann | ||
Fe4Ni2S5 | [17] K Bornemann | ||||
Fe2Ni3S4 | [17] K Bornemann | ||||
Fe3Ni4S5 | [17] K Bornemann | ||||
Fe2Ni2S3 | [17] K Bornemann | ||||
FeNi2S4 | Violarite | dark violet grey | mineral oxidate | ||
Ni3Sn2S2 | [18] | ||||
Ni3Bi2S2 | superconducting | [18] | |||
Ni3Bi2Se2 | superconducting | [18] | |||
NiSnS3 | nickel thiostannate | greenish black | orthorhombic a=6.88 b=7.89 c=11.95 Z=8 V=644 | NiCl2 + SnS2 | [19] |
NiGeS33 | nickelselenogermanate | [20] | |||
Ta2NiS5 | Orthorhombic | [21] | |||
Ta2NiSe5 | monoclinic β=90.53 | [21] | |||
Ta2Ni2Te4 | [22] | ||||
Ta2Ni3Te5 | [22] |
Titanium(II) chloride is the chemical compound with the formula TiCl2. The black solid has been studied only moderately, probably because of its high reactivity. Ti(II) is a strong reducing agent: it has a high affinity for oxygen and reacts irreversibly with water to produce H2. The usual preparation is the thermal disproportionation of TiCl3 at 500 °C. The reaction is driven by the loss of volatile TiCl4:
Indium(III) bromide, (indium tribromide), InBr3, is a chemical compound of indium and bromine. It is a Lewis acid and has been used in organic synthesis.
Lithium carbide, Li
2C
2, often known as dilithium acetylide, is a chemical compound of lithium and carbon, an acetylide. It is an intermediate compound produced during radiocarbon dating procedures. Li
2C
2 is one of an extensive range of lithium-carbon compounds which include the lithium-rich Li
4C, Li
6C
2, Li
8C
3, Li
6C
3, Li
4C
3, Li
4C
5, and the graphite intercalation compounds LiC
6, LiC
12, and LiC
18.
Li
2C
2 is the most thermodynamically-stable lithium-rich compound and the only one that can be obtained directly from the elements. It was first produced by Moissan, in 1896 who reacted coal with lithium carbonate.
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.
Chromium(IV) chloride (CrCl4) is an unstable chromium compound. It is generated by combining chromium(III) chloride and chlorine gas at elevated temperatures, but reverts to those substances at room temperature.
Potassium amide is an inorganic compound with the chemical formula KNH2. Like other alkali metal amides, it is a white solid that hydrolyzes readily. It is a strong base.
Oxalyldihydrazide is an organic compound with the formula of NH2NHCOCONHNH2. Oxalyldihydrazide can act as a ligand on some divalent first row transition metals manganese, iron, cobalt, nickel, copper or zinc.
The nitridoborates are chemical compounds of boron and nitrogen with metals. These compounds are typically produced at high temperature by reacting hexagonal boron nitride with metal nitrides or by metathesis reactions involving nitridoborates. A wide range of these compounds have been made involving lithium, alkaline earth metals and lanthanides, and their structures determined using crystallographic techniques such as X-ray crystallography. Structurally one of their interesting features is the presence of polyatomic anions of boron and nitrogen where the geometry and the B–N bond length have been interpreted in terms of π-bonding.
Werner Urland is a German chemist whose name is imprinted in the pioneering implementation of the Angular Overlap Model for the interpretation of optical and magnetic properties of rare-earth coordination compounds. This approach receives a renewed value in the context of the vogue around the lanthanide-based new materials, such as achieving magnets at molecular scale, or designing new phosphor materials.
Compounds of nickel are chemical compounds containing the element nickel which is a member of the group 10 of the periodic table. Most compounds in the group have an oxidation state of +2. Nickel is classified as a transition metal with nickel(II) having much chemical behaviour in common with iron(II) and cobalt(II). Many salts of nickel(II) are isomorphous with salts of magnesium due to the ionic radii of the cations being almost the same. Nickel forms many coordination complexes. Nickel tetracarbonyl was the first pure metal carbonyl produced, and is unusual in its volatility. Metalloproteins containing nickel are found in biological systems.
1,3-Difluoro-trisulfane-1,1-difluoride is an inorganic molecular substance with the structure SF3SSF, consisting of sulfur in a low oxidation state with fluorine. The compound consists of a chain of three sulfur atoms, with three fluorine atoms bonded to the sulfur on one end and the fourth fluorine bonded to the sulfur on the other end. 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.
The phosphidosilicates or phosphosilicides are inorganic compounds containing silicon bonded to phosphorus and one or more other kinds of elements. In the phosphosilicates each silicon atom is surrounded by four phosphorus atoms in a tetrahedron. The triphosphosilicates have a SiP3 unit, that can be a planar triangle like carbonate CO3. The phosphorus atoms can be shared to form different patterns e.g. [Si2P6]10− which forms pairs, and [Si3P7]3− which contains two-dimensional double layer sheets. [SiP4]8− with isolated tetrahedra, and [SiP2]2− with a three dimensional network with shared tetrahedron corners. SiP clusters can be joined, not only by sharing a P atom, but also by way of a P-P bond. This does not happen with nitridosilicates or plain silicates.
Cobalt(III) chloride or cobaltic chloride is an unstable and elusive compound of cobalt and chlorine with formula CoCl
3. In this compound, the cobalt atoms have a formal charge of +3.
Nickel is one of the metals that can form Tutton's salts. The singly charged ion can be any of the full range of potassium, rubidium, cesium, ammonium (), or thallium. As a mineral the ammonium nickel salt, (NH4)2Ni(SO4)2 • 6H2O, can be called nickelboussingaultite. With sodium, the double sulfate is nickelblödite Na2Ni(SO4)2 • 4H2O from the blödite family. Nickel can be substituted by other divalent metals of similar sized to make mixtures that crystallise in the same form.
Hexaamminenickel chloride is the chemical compound with the formula [Ni(NH3)6]Cl2. It is the chloride salt of the metal ammine complex [Ni(NH3)6]2+. The cation features six ammonia (called ammines in coordination chemistry) ligands attached to the nickel(II) ion.
Vanadium(II) iodide is the inorganic compound with the formula VI2. It is a black micaceous solid. It adopts the cadmium iodide structure, featuring octahedral V(II) centers. The hexahydrate is also known. It forms purple crystals.
The telluride phosphides are a class of mixed anion compounds containing both telluride and phosphide ions. The phosphidotelluride or telluridophosphide compounds have a [TeP]3− group in which the tellurium atom has a bond to the phosphorus atom. A formal charge of −2 is on the phosphorus and −1 on the tellurium. There is no binary compound of tellurium and phosphorus. Not many telluride phosphides are known, but they have been discovered for noble metals, actinides, and group 4 elements.
The telluride iodides are chemical compounds that contain both telluride ions (Te2−) and iodide ions (I−). They are in the class of mixed anion compounds or chalcogenide halides.
Nitride fluorides containing nitride and fluoride ions with the formula NF4-. They can be electronically equivalent to a pair of oxide ions O24-. Nitride fluorides were discovered in 1996 by Lavalle et al. They heated diammonium technetium hexafluoride to 300 °C to yield TcNF. Another preparation is to heat a fluoride compound with a nitride compound in a solid state reaction. The fluorimido ion is F-N2- and is found in a rhenium compound.
A selenite fluoride is a chemical compound or salt that contains fluoride and selenite anions (F− and SeO32−). These are mixed anion compounds. Some have third anions, including nitrate (NO3−), molybdate (MoO42−), oxalate (C2O42−), selenate (SeO42−), silicate (SiO42−) and tellurate (TeO42−).