16284-59-6

Usage

Uses

Radioactive agent.

InChI:InChI=1/3ClH.Cr/h3*1H;/q;;;+3/p-3/i;;;1-1/rCl3Cr/c1-4(2)3/i4-1

Upstream product

• 75-44-5 phosgene 
• 10025-67-9 disulfur dichloride 
• 7782-50-5 chlorine 
• 56-23-5 tetrachloromethane 
• 10026-13-8 phosphorus pentachloride 
• 13820-25-2 hexamminechromium(III) chloride 
• 7440-47-3 chromium 
• 12018-22-3 chromium(II) sulfide 
• 7647-01-0 hydrogenchloride 
• 14977-61-8 chromyl chloride 
• 7719-12-2 phosphorus trichloride 

Downstream Products

• 22541-79-3 chromium (II) 
• 7440-47-3 chromium 
• 13907-45-4 chromate(VI) ion 
• 10170-68-0 trichlorotris(tetrahydrofuran)chromium(III) 
• 125695-09-2 {CrCl₂(C₆H₅NH₂)4}⁽¹⁺⁾*Cl^(1-)={CrCl₂(C₆H₅NH₂)4}Cl 
• 124383-40-0 (C₆H₅)5CrCl 
• 16037-50-6 potassium chlorochromate 
• 41509-53-9 tris(ethylenediamine)chromium(III) 
• 12099-15-9 bis(η6-diphenyl)chromium(0) 
• 33154-48-2 bis(diphenyl)chromium(I) 
• 51155-74-9 (C₆H₆CrC₆H₅C₆H₅)⁽¹⁺⁾ 

Relevant academic research and scientific papers

Detuning the Honeycomb of the α-RuCl3 Kitaev Lattice: A Case of Cr3+ Dopant

Fine-tuning chemistry by doping with transition metals enables new perspectives for exploring Kitaev physics on a two-dimensional (2D) honeycomb lattice of α-RuCl3, which is promising in the field of quantum information protection and quantum computation. The key parameters to vary by doping are both Heisenberg and Kitaev components of the nearest-neighbor exchange interaction between the Jeff = 1/2 Ru3+ spins, depending strongly on the peculiarities of the crystal structure. Here, we present crystal growth by chemical vapor transport and structure elucidation of a solid solution series Ru1-xCrxCl3 (0 ≤ x ≤ 1), with Cr3+ ions coupled to the Ru3+ Kitaev host. The Cr3+ substitution preserves the honeycomb type lattice of α-RuCl3 and creates mixed occupancy of Ru/Cr sites without cationic order within the layers as confirmed by single-crystal X-ray diffraction and transmission electron microscopy investigations. In contrast to high-quality single crystals of α-RuCl3 with ABAB-stacked layers, the ternary compounds demonstrate a significant stacking disorder along the c-axis direction as evidenced by X-ray diffraction and high resolution scanning transmission electron microscopy (HR-STEM). Raman spectra of substituted samples are in line with the symmetry conservation of the parent lattice upon chromium doping. At the same time, our magnetic susceptibility data indicate that the Kitaev physics of α-RuCl3 is increasingly suppressed by the dominant spin-only driven magnetism of Cr3+ (S = 3/2) in Ru1-xCrxCl3.

Synthesis, physical properties and application of the zero-valent iron/titanium dioxide heterocomposite having high activity for the sustainable photocatalytic removal of hexavalent chromium in water

A magnetic photocatalytic material composed of nanoscale zero-valent iron (nZVI) homogeneously distributed over a mesoporous nanocrystalline TiO2 matrix has been prepared by a multistage chemical process, including sol-gel technique, wet impregnation, and chemical reduction. X-ray powder diffraction and Raman spectroscopy were used for the structural and chemical characterization of the magnetic photocatalyst, while bulk magnetization measurements and scanning/transmission electron microscopy were employed to determine the physical and textural properties of the photocatalyst. The synthesized nZVI@TiO2 photocatalyst shows very high efficiency in the removal of hexavalent chromium, Cr(vi), from water. The degradation rate follows a pseudo-first-order kinetic model. Most importantly, the remarkable efficiency of the photocatalyst is found to be due to the synergistic contributions of both counterparts, nZVI and TiO2, as validated by comparative experiments with neat TiO2 and nZVI@TiO2 under UV-C irradiation and without irradiation. New insights into the mechanism of synergistic degradation of chromium(vi) and suppressed oxidation of nZVI particles in the composite material are proposed and therein discussed.

Microwave-assisted carbohydrohalogenation of first-row transition-metal oxides (M = V, Cr, Mn, Fe, Co, Ni, Cu) with the formation of element halides

The anhydrous forms of first-row transition-metal chlorides and bromides ranging from vanadium to copper were synthesized in a one-step reaction using the relatively inexpensive element oxides, carbon sources, and halogen halides as starting materials. The reactions were carried out in a microwave oven to give quantitative yields within short reaction times.

Synthesis and crystal structure of [Cr(thd)2(OEt)]2

The mixed-ligand complex [Cr(thd)2(OEt)]2 [(thd) - = anion of H(thd) = C11H20O2 = 2,2,6,6-tetramethylheptane-3,5-dione] appears as by-product when EtOH/H 2O is used as solvent during preparation of Cr(thd)3. [Cr(thd)2(OEt)]2 can be difficult to separate from Cr(thd)3 by sublimation, but separation is easily accomplished by extracting Cr(thd)3 with acetone. A detailed account for the sublimation behavior of [Cr(thd)2(OEt)]2/Cr(thd) 3 mixtures is advanced. Good yields of [Cr(thd)2(OEt)] 2 are obtained when CrCl3, H(thd), and Na(EtO) react in absolute EtOH. [Cr(thd)2(OEt)]2 is obtained in the form of green needle-shaped crystals by recrystallization from toluene. The crystal structure is triclinic [a = 10.2919(15), b = 10.6686(16), c = 14.194(3) A, α = 106.559(2), β = 107.869(2), and γ = 98.326(2)° at 295 K; space group P1. The complex contains two crystallographic equivalent chromium atoms, which are bridged by two cis-configured ethoxy groups, the four remaining sites in the octahedral coordination around each chromium atom being occupied by oxygen atoms from two thd ligands. The bond lengths and angles concur with the findings for related molecular complexes. The temperature dependence of the magnetic susceptibility of [Cr(thd)2(OEt)] 2 follows Curie-Weiss law with Weiss constant θ ≈ -65 K and μp = 3.87 μB. Copyright

An overview study of chlorination reactions applied to the primary extraction and recycling of metals and to the synthesis of new reagents

Energy intensive classical metallurgical processes, the depletion of high-grade ores and primary sources push the scientific and technical communities to treat lean and complex ores as well as secondary metal resources for the recovery of valuable metals.

The mechanochemical reduction of AgCl with metals : RRRRevisiting an experiment of M. Faraday

Faraday induced the mechanochemical reduction of AgCl with Zn, Sn, Fe and Cu in 1820, using trituration in a mortar. This experiment is revisited, employing a mortar-and-pestle and a ball mill as mechanochemical reactors. The reaction kinetics depends both on the thermochemical properties and the hardness of the reactants. When using Zn as the reducing agent, Faraday likely observed a mechanically induced self-sustaining process (MSR), or at least he came very close to doing so.

Vapor complexation in the ACl-CrCl3 (A = Li, Cs) system up to 1400 K and the tetrahedral ligand field states of chromium (III)

Electronic absorption spectroscopy is used in the temperature range 800-1400 K, to study the vapor species, over molten CrCl3-ACl (A = Li, Cs) mixtures and solid CrCl3. The observed Vis/near IR bands are assigned to d ← d transitions of Cr3+ in distorted tetrahedral coordination (CrCl4-). Spectra of octahedral CrCl63 - in molten alkali chlorides were also measured and used to estimate the spectroscopic constants (Dq, B, C) of Cr3+ in all chloride tetrahedral and octahedral environments. Composition and temperature-dependent measurements suggest that the predominant vapor species is the 1:1 monomer ACrCl4 and that an equilibrium is established: ACrCl4 (g) ? CrCl3 (g) + ACl (g)Due to vapor complexation the apparent vapor pressure of CrCl3 increases. The volatility enhancement is higher for the LiCl-CrCl3 than the CsCl-CrCl3 system reaching values near 60, at ～950 K. Based on the preferential octahedral ligand field stabilization energy of Cr(III) it is argued that dimeric and/or trimeric 1:1 species may be also present as minor components in the vapor phase. Finally, the vapor complexation and volatility enhancement for the MX3-AX (M = rare earth, Cr; X = halide) systems are discussed and correlated to the melt structure of the corresponding binary melts.

The thermodynamic characteristics of sublimation of chromium trichloride

The sublimation of stoichiometric chromium trichloride was experimentally studied by the static method of vapor pressure measurements. The main reaction was found to be CrCl3(cr) = CrCl3(g). The enthalpy and entropy of this reaction

A study of chloropentaamminechromium(III) tetrachloroplatinate(II)

The double complex salt [Cr(NH3)5Cl][PtCl 4] (I) was synthesized and structurally characterized. Crystal data: a = 16.5178(19) ?, b = 8.1086(9) ?, c = 9.4401 (11) ?, V = 1264.4(3) ?3, space group Pnma, Z = 4, ρcalcd = 2.677 g/cm3, R = 0.0304. Complex I is isostructural to the compounds [M(NH3)5Cl] [M′X4] (M = Co, Rh, Ir; M′ = Pt, Pd; X = Cl, Br) studied previously. Thermolysis of I in hydrogen and helium was studied. The products of the thermolysis in hydrogen are solid solutions CrxPt1-x with a different degree of order, which depends on the experimental conditions.

Solubility properties of the systems chromium salts-amino acids-water

Solubility properties of the ternary systems of Cr(NO3) 3-His-H2O, Cr(NO3)3-Met-H 2O, and CrCl3-His-H2O (His - histidine, Met - methionine) have been investigated in t