3017-60-5

Usage

Uses

Used in Forensic Science:
Cobalt thiocyanate is used as a reagent in the Scott test, which is a well-established screening test for the detection of cocaine. The test involves the reaction of cobalt thiocyanate with cocaine, resulting in a color change that indicates the presence of the drug. This application is particularly useful in forensic investigations and drug testing.
Used in Chemical Analysis:
Due to its unique chemical properties and the color changes it exhibits in various solvents, cobalt thiocyanate can be employed as an indicator in chemical analysis. It can be used to identify the presence of certain compounds or to determine the acidity or basicity of a solution.
Used in Educational Purposes:
Cobalt thiocyanate's distinctive color changes make it an ideal compound for educational demonstrations and experiments. It can be used to teach students about chemical reactions, solubility, and the properties of different solvents.
Used in Research and Development:
The unique properties of cobalt thiocyanate make it a valuable compound for research and development in various fields, including chemistry, materials science, and pharmaceuticals. It can be used to study the interactions between different molecules and to develop new methods for detecting and analyzing substances.

InChI:InChI=1/2CHNS.Co/c2*2-1-3;/h2*3H;/q;;+2/p-2

Upstream product

• 333-20-0 potassium thioacyanate 
• 2092-17-3 barium thiocyanate 
• 3129-90-6 isothiocyanic acid 
• 759403-02-6 cobalt(II) carbonate 
• 1307-96-6 cobalt(II) oxide 
• 505-14-6 thiocyanogen 
• 22541-53-3 cobalt(II) 
• 7646-79-9 cobalt(II) chloride 
• 463-56-9 thiocyanic acid 
• 113946-02-4 {Co(SCN)2(C₅H₅N)4} 
• 14882-22-5 [Co(py)₄(SCN)₂] 
• 302-04-5 Thiocyanate 
• 10534-89-1 hexammine cobalt(III) chloride 

Downstream Products

• 333-20-0 potassium thioacyanate 
• 16569-46-3 tris(ethylenediamine)cobalt(III) 
• 87654-51-1 (Co(NH₂CH₂CH₂NH₂)(NCS)2)2NH₂CH₂CH₂NH₂O₂ 
• 87654-50-0 (Co(NH₂CH₂CH₂NH₂)(NCS)2SCN)2NH₂CH₂CH₂NH₂ 
• 87654-50-0 (Co(NH₂CH₂CH₂NH₂)(NCS)2SCN)2NH₂CH₂CH₂NH₂ 
• 7440-48-4 cobalt 
• 52518-87-3 di-thiocyanate-bis(triphenylphosphine oxide)-cobalt(II) 
• 111994-16-2 (SCN)2Co(NCSC₆H₄CH₃-m)2 

Relevant academic research and scientific papers

Neutron diffraction study of quasi-1D Ising ferromagnet [Co(NCS)2(pyridine)2]n

The quasi-one-dimensional [Co(NCS)2(pyridine)2]n coordination polymer built of ferromagnetic chains of Co(II) ions linked by (NCS)2 anions is known as an Ising ferromagnet that magnetically orders at TC = 3.9 K. We performed a neutron diffraction study and show that the magnetic structure is collinear ferromagnetic, static, and without any glassy component. The magnitude of the ordered magnetic moment of Co(II) is 3.65(15) μB, which points to a relatively large contribution of the orbital moment. The direction of the moment is close to the direction of the Co–N(pyridine) bond, which confirms literature ab initio calculations. We show that dipolar interactions are mainly responsible for the magnetic interchain coupling.

Solid-state transformation of [Co(NCS)2(pyridine)4] into [Co(NCS)2(pyridine)2]n: From Curie-Weiss paramagnetism to single chain magnetic behaviour

Reaction of Co(NCS)2 with pyridine (pyr) in aqueous solution at room temperature leads to the formation of the pyridine-rich 1:4 compound of composition [Co(NCS)2(pyridine)4] (1) reported recently. On heating, the pyridine-rich 1:4 compound transforms into its corresponding pyridine-deficient 1:2 compound of composition [Co(NCS)2(pyridine) 2]n (2), which decomposes on further heating. In the crystal structure of compound 2 the metal cations are coordinated by four N-atoms of two pyridine ligands and two N-bonded thiocyanato anions, each in mutually trans orientation, and by two S-atoms of two adjacent thiocyanato anions in a slightly distorted octahedral geometry. The thiocyanato anions bridge the metal cations forming one-dimensional polymeric chains. IR spectroscopic investigations on the pyridine-deficient 1:2 compound prepared in thermal decomposition are in accordance with bridging thiocyanato anions. Magnetic measurements of the pyridine-rich 1:4 compound and pyridine-deficient 1:2 compound reveal different behaviour with Curie-Weiss paramagnetism for compound 1 and single chain magnetic behaviour for compound 2, with a Mydosh-parameter φ = 0.12 and an effective energy barrier (-U eff/kB) of 62.5 K for the spin relaxation. The Royal Society of Chemistry 2010.

Ionization Equilibria in Solutions of Cobalt(II) Thiocyanate in N,N-Dimethylformamide

Visible absorption spectra and molar conductance curve for Co(NCS)2 in N,N-dimethylformamide (DMF), together with the spectra for the Co(ClO4)2-KNCS-DMF, Co(NCS)2-KNCS-DMF and Co(NCS)2-DMF-chlorobenzene systems, have been determined at 25 deg C.The result

Stereochemistry of coordination polyhedra: Vs. single ion magnetism in penta- And hexacoordinated Co(ii) complexes with tridentate rigid ligands

A tridentate ligand L (2,6-bis(1-(3,5-di-tert-butylbenzyl)-1H-benzimidazol-2-yl)pyridine) was synthesized and used for the preparation of three pentacoordinated Co(ii) complexes of formula [Co(L)X2] (where X = NCS- for 1, X = Cl- for 2 and X = Br- for 3) and one ionic compound 4 ([Co(L)2]Br2·2CH3OH·H2O) containing a hexacoordinated Co(ii) centre. Static magnetic data were analysed with respect to the spin (1-3) or the Griffith-Figgis (4) Hamiltonian. Ab initio calculations enable us to identify the positive axial magnetic anisotropy parameter D accompanied by a significant degree of rhombicity in the reported complexes. Also, magneto-structural correlation was outlined for this class of compounds. Moreover, all four compounds exhibit slow relaxation of magnetisation at an applied static magnetic field with either both low- and high-frequency relaxation channels (3) or a single high-frequency relaxation process (1, 2 and 4). The interplay between the stereochemistry of coordination polyhedra, magnetic anisotropy and the relaxation processes was investigated and discussed in detail.

A novel paramagnetic coordination polymer, fabricated from Co(NCS)2 and 2-pyridinecarbaldehyde isonicotinoylhydrazone

We report on a mixed cobalt(II)/cobalt(III) heteroleptic coordination polymer of the salt-like structure {[(CoIIIL2)2CoII(NCS)2][CoII(NCS)4]}n?a(solvent) (1?a(solvent)), obtained by a reaction of Co(NCS)2 with 2-pyridinecarbaldehyde isonicotinoylhydrazone (HL). Complex 1?a(solvent) contains 15.52% of solvent molecules, which fits to six molecules of EtOH per one [(CoIIIL2)2CoII(NCS)2][CoII(NCS)4] species, and the structure of the crystals can be assigned to the {[(CoIIIL2)2CoII(NCS)2][CoII(NCS)4]}n?6EtOH composition. 1?a(solvent) was found to be stable after drying at 80 °C for several days, yielding a solvent-free complex 1. The FTIR data of both structures supports the complete loss of solvents after drying, while the general framework remains intact. As evident from the comparison of the experimental X-ray powder diffraction data of 1 with the calculated powder pattern generated from the single crystal X-ray data of 1?a(solvent), the former complex partially loses its crystallinity; however, the experimental powder pattern resembles the calculated one. Thus, the overall structure of 1 is similar to that of 1?a(solvent). The crystal structure of 1?a(solvent) is constructed from the V-shaped (CoIIIL2)+ cations, where the metal ion is N4S2-coordinated by two L. These (CoIIIL2)+ cations are interlinked through CoII(NCS)2 molecules by coordination via free 4-pyridyl nitrogen atoms, yielding a 1D polymeric cationic chain {[(CoIIIL2)2CoII(NCS)2]2+}n, which are interlinked into a 3D framework through a bunch of bifurcated (N)C–S?π(2-Py) and linear (NN)C–H?O non-covalent interactions. Due to such 3D aggregation, a half of rhombohedral cells are filled by the interlayered [CoII(NCS)4]2– anions, while the other half of cells is free from non-volatile species and filled with volatile solvent molecules, yielding 1D tubular voids, which occupy about 17% of unit cell volume. Direct current variable-temperature magnetic susceptibility measurements on a polycrystalline sample of 1?a(solvent) were carried out in the temperature range 1.8–300 K. The magnetic behaviour of 1?a(solvent) indicates the presence of magnetic anisotropy of the CoII ions and/or very weak intermolecular exchange interactions. The surface and pore properties of 1 and HL were calculated by N2 adsorption at 77 K. In addition, CO2 adsorption properties of 1 and HL at different temperatures were determined. It was found that 1 increased both textural and CO2 adsorption properties.

Coordination-driven self-assembly of a series of dinuclear M2L2mesocates with a bis-bidentate pyridylimine ligand

Four isostructural dinuclear M2L2mesocates of the general formula [M2(NCS)4(L)2]·4.5MeOH (1M; M = Mn, Fe, Co, Zn) were constructed by using the coordination-driven self-assembly of the [M(NCS)2] precursor and the flexible bis-bidentate pyridylimine Schiff base ligand L (L = 4,4′-(1,4-phenylenebis(oxy))bis(N-(pyridin-2-ylmethylene)aniline). The centrosymmetric M2L2mesocate forms through the side-by-side coordination of two L ligands to a pair of M(ii) ions. The mesocates exhibit a reversible temperature induced desolvation-solvation behavior without losing their structural integrity. The activated1Co, as the representative M2L2mesocate, shows an exceptionally high MeOH vapour uptake capacity of 481.9 cm3g?1(68.8 wt%) at STP with good recyclability. Notably, it also exhibits CO2adsorption with an uptake capacity of 20.2 cm3g?1(3.6 wt%) at room temperature and 1 bar.

Strengthening the Magnetic Interactions in Pseudobinary First-Row Transition Metal Thiocyanates, M(NCS)2

Understanding the effect of chemical composition on the strength of magnetic interactions is key to the design of magnets with high operating temperatures. The magnetic divalent first-row transition metal (TM) thiocyanates are a class of chemically simple layered molecular frameworks. Here, we report two new members of the family, manganese(II) thiocyanate, Mn(NCS)2, and iron(II) thiocyanate, Fe(NCS)2. Using magnetic susceptibility measurements on these materials and on cobalt(II) thiocyanate and nickel(II) thiocyanate, Co(NCS)2 and Ni(NCS)2, respectively, we identify significantly stronger net antiferromagnetic interactions between the earlier TM ions-a decrease in the Weiss constant, θ, from 29 K for Ni(NCS)2 to-115 K for Mn(NCS)2-a consequence of more diffuse 3d orbitals, increased orbital overlap, and increasing numbers of unpaired t2g electrons. We elucidate the magnetic structures of these materials: Mn(NCS)2, Fe(NCS)2, and Co(NCS)2 order into the same antiferromagnetic commensurate ground state, while Ni(NCS)2 adopts a ground state structure consisting of ferromagnetically ordered layers stacked antiferromagnetically. We show that significantly stronger exchange interactions can be realized in these thiocyanate frameworks by using earlier TMs.

A tetracoordinate Co(II) single molecule magnet based on triphenylphosphine and isothiocyanato group

A simple Co(II) mononuclear complex [Co(PPh3)2(NCS)2] has been studied in details. Its crystal and molecular structure is reported along with its IR a UV–Vis spectra. The DC magnetization studies confirm a sizable zero-field splitting D/hc?=??9.4?cm?1that is also confirmed by quantum-chemical calculations. The AC susceptibility data shows that there is a slow magnetic relaxation with two relaxation branches. The low-frequency branch occurs at about f?=?1–10?Hz and it tends to disappear progressively on heating. The high-frequency branch exists at the frequency ranges above f?>?200?Hz and this is shifted above the hardware limit (1500?Hz) on heating. The characteristics of this field-induced single molecule magnet strongly depend upon the applied DC field (0.2–0.4?T).

Proton reduction using cobalt glyoximes with isothiocyanate and aniline axial ligands

Cobaloxime model complexes containing aniline derivatives and isothiocyanate as the axial ligands Co(dmgH)2XY (dmgH = dimethylglyoxime, X = NCS, Cl and Y = aniline, pyridine) have been synthesized and used as proton reduction catalysts. Using acetic acid as the proton source in acetonitrile, cyclic voltammetry studies have shown that these complexes are comparable to the well-known Co(dmgH)2(pyridine)Cl complex as a potent catalyst in terms of the overpotential and catalytic efficiency of proton reduction. In particular, we have shown that aniline derivatives can be used as possible pyridine alternatives in cobaloximes in our continuing search for an even more efficient proton reduction catalyst.

2-Amino-4-(2-pyridyl)thiazole as Chelating Ligand: A Dinuclear Oxido-Bridged Ferric Complex and Mononuclear 3d Metal Complexes

2-Amino-4-(2-pyridyl)thiazole (H2L) complexes of iron(III), iron(II), cobalt(II), nickel(II) and copper(II) have been prepared for the first time. The oxido-bridged dinuclear ferric complex [(H2L)2FFeIII(μ-O)FeIIIF(H2L)2](BF4)2 (1) and the mononuclear difluorido complex [FeIII(H2L)2F2](BF4) (2) were prepared with Fe(BF4)2·6H2O. Complex 1 contains strong antiferromagnetically coupled iron(III) ions. In addition, the mononuclear 3:1-type complex [Co(H2L)3](ClO4)2 (3) and the mononuclear 2:1-type complexes [Cu(H2L)2](ClO4)2 (4) and [M(H2L)2(NCX)2] (5: M = Fe, X = S; 6: M = Fe, X = Se; 7: M = Co, X = S; 8: M = Ni, X = S) were prepared.