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The syntheses, spectroscopic characterization (IR, 1H and 31P NMR, ESI-MS) and conductivity studies of the mixed N,P-donor complexes of copper(I) thiocyanate: [Cu(NCS)(py)2-(PPh3)], (2), [Cu(NCS)(Mepy)(PPh3)]2, (3), [Cu(NCS)(phen)- (PPh3)], (4), [Cu(NCS)(bpy)(PPh3)], (5), [Cu(NCS)(bpy)-(PPh2py)], (6), [Cu(NCS)(py)(PPh2py)], (7), (py = pyridine; Mepy = 2-methylpyridine; phen = 1,10-phenanthroline, bpy = 2,2?-bipyridyl), together with single-crystal X-ray structural characterizations of 2, 3, 4 (new polymorph), 5 and 6 are reported, which provides an opportunity to study the effect of the introduction of a pair of nitrogen donors, both unidentate and chelate, on the bonding parameters of the Cu/NCS/P system. Cu-P and Cu-N2(ar) are found to be similar [2.1974(5) and 2.091(2), 2.070(1) A for py2 adduct 2, cf. 2.1748(9)-2.200(1) and 2.071(2)-2.106(4) A for the counterpart values for bidentate adducts 4-6]. However, Cu-N(CS) and Cu-N-C are 2.013(2) A and 157.4(2) for py2 adduct 2 and 1.946(2)-1.981(8) A and 166.7(2)-176.58(2) for bidentate counterparts 4-6. The change is attributed primarily to the closure in the N-Cu-N angle [99.58(8) for py2 2; 77.7(6)-80.5(3) for N?N-bidentate donors 4-6]. In consequence of the increased steric profile of the Mepy ligand, we find the stoichiometry diminished to 1:1:1, which resulted in the formation of [(Ph3P) MepyCu(NCSSCN)Cu(Mepy)(PPh3)] dimers. TDDFT/CPCM calculations were used to clarify the type of transitions involved in the UV/Vis absorption spectra, and the corresponding experimental photoemission data were acquired. The 31P CPMAS spectra of the copper derivatives exhibit distorted quartets that afford values for 1JCu,P. Furthermore, the quadrupole-induced distortion factors were calculated, and in the cases of 2, 4 and 5, the quadrupole coupling constants were obtained, on the basis of the X-ray structures. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media. We’ll be discussing some of the latest developments in chemical about CAS: HPLC of Formula: CCuNS, Name is Cuprous thiocyanate, belongs to copper-catalyst compound, is a common compound. HPLC of Formula: CCuNSIn an article, authors is Wang, Chao-Hai, once mentioned the new application about HPLC of Formula: CCuNS.

Cation-templated self-assembly of 1,n-bis(4-methylpyridine)alkane cations (n = 3-7) with CuSCN was studied and a series of new polymeric thiocyanate frameworks were obtained: {(bmpp)[Cu2Br2(SCN)2]}n (1), {(bmpt)[Cu2(SCN)4]}n (2), {(bmppt)[Cu2(SCN)4]}n (3), {(bmph)[Cu4(SCN)6]}n (4), {(bmphp)[Cu2(SCN)4]}n (5), (n = 3, bmpp; n = 4, bmpt; n = 5, bmppt; n = 6, bmph; n = 7, bmphp). The structures consist of 1-2D frameworks with the dications trapped within host network cavities. Compounds 1, 2, 3 and 5 possess the infinite two-dimensional polypseudorotaxane anion networks. Compound 4 has a novel 1D chain structure which looks like lotus root. The results demonstrate that the side chain of methyl substituent plays an important role in the fabrication of polypseudorotaxane structures. Furthermore, solid UV-Vis spectra, photoluminescence and photocatalytic properties at ambient temperature were also investigated.

The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. In my other articles, you can also check out more blogs about 1111-67-7

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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The synthesis and crystal structure elucidation of two novel polymeric copper(II) complexes has led us to propose a mechanism for the formation of 2-picolinic acid (pic) from di-2-pyridyl ketone (dpk) and benzoic acid from acetophenone. During studies into the interaction of copper ions with the dpk-acetophenone system, two complexes Na2(NCS)2(H 2O)[Cu(pic)2] (1) and Na2(H2O) 2[Cu(pic)2(NCS)2] (2) which contain pic coordinated to copper were isolated. The occurrence of (1) and (2) has led us to consider the Baeyer-Villiger rearrangement as a possible mechanism for the formation of (1) and (2).

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. HPLC of Formula: CCuNS. Introducing a new discovery about 1111-67-7, Name is Cuprous thiocyanate

A PRIMARY (barrier) film forms on the copper anode at an underpotential relative to the secondary (porous) film and exhibits a pre-peak or shoulder at -0.19 V (vs.SHE), for a 0.1 mol dm-3 KSCN electrolyte.The anodic peak current for the primary film is linearly dependent upon the sweep rate, while potential steps into the primary film region produce monotonic current decays with j = kt-1, consistent with a place-exchange mechanism for the initial formation of the barrier film.Upon stirring, the size of the primary film peak decreases as hydrogen evolution competes with the film-formation process.A porous CuSCN film begins to form at potentials 50-100 mV more positive than the barrier film, producing a larger peak at 0.01 V (0.1 mol dm-3 KSCN), equivalent to a film of 15-20 monolayers, with thicker films formed in more concentrated thiocyanate solutions.The anodic peak current for the porous film and the potential change to reach the peak are both proportional to the square root of the sweep rate, which is consistent with a model for film growth controlled by the resistance across the underlying barrier film.Raman spectroscopy reveals at least two distict S-bonded CuSCN species, one of which is lost upon partial reduction of the film, and is due to the barrier film.The remaining species has the same Raman spectrum as crystalline CuSCN.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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Colourless columnar crystals of Ph4PCu(SCN)2 (1) were obtained by reaction of CuSCN with Ph4PSCN in acetone. 1 crystallises in the orthorhombic space group P212121 with a = 746.50(10); b = 1623.8(3); c = 1999.4(4) pm; Z = 4; V = 2423.6(7) · 106 pm3. Colourless lamella shaped crystals of (PPN)Cu(SCN)2 (2) were formed by reactions of (PPN)CuCl2 with KSCN in ethanol. 2 crystallises in the triclinic space group P1 with a = 1101.3(2); b = 1141.6(2); c = 1522.9(3) pm; alpha = 74.75(3); beta = 80.50(3); gamma = 70.74(3); Z = 2; V = 1737.4(6) · 106 pm3. In both compounds the anions consist of approximately planar groups with Cu atoms co-ordinated by two N and one S atom. In each case one SCN is a N-bound terminal group while the second SCN forms a 1,3-mu bridge between two Cu centres. In 1 the planar CuN2S units are connected to polymer anions with chain structure, whereas 2 contains dimeric anions [SCNCu(SCN)2CuNCS].

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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Objective: The metal complexes of 1-(Phenylamino)-4, 4, 6-trimethyl-3, 4-dihydropyrimidine-2-(1H)-thione: preparation, physical and spectroscopic studies and preliminary antibacterial properties. Methods: Complexes of bidentate ligand containing N, S-bridge [M(pmpt)2(H2O)n] (M(II) = Cu, Mn, Ni, Co; n = 2 and M(II) = Zn, Cd, Pd; n = 0) derived from the reaction of Hpmpt ligand with metals (M(II) = Cu, Mn, Ni, Co, Zn, Cd, Pd) and characterized by various physico-chemical techniques. From magnetic moment studies, square planar geometry is suggested for Zn(II), Cd(II), Pd(II) complexes, octahedral geometry is proposed for Co(II), Ni(II) and Mn(II) and distorted octahedral for Cu(II) complexes. Thermo gravimetric (TG) curves indicate the decomposition of complexes in four to five steps. The presence of coordinated water in metal complexes was confirmed by thermal, elemental analysis and IR data. Free ligand and its complexes were assayed in vitro for their antibacterial activity against gram positive and gram negative bacteria using chloramphenicol as a standard market-drug. Results: The reported complexes were synthesized through greener protocol that is grindstone method by mixing the ligand and metal salts in 2:1 molar ratio. Products were obtained in good yield with sharp melting point. Conclusion: Studies have indicated that such complexes can be prepared by environment friendly approach which requires less time, simple workup for isolation and purification with good yield. The [Ni(pmpt)2(H2O)2] complex showed excellent antibacterial activity while other reported metal complexes showed weak antibacterial activity.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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The properties recently reported on the Cu(I)-iodide pyrimidine nonporous 1D-coordination polymer [CuI(ANP)]n (ANP = 2-amino-5-nitropyridine) showing reversible physically and chemically driven electrical response have prompted us to carry a comparative study with the series of [CuX(ANP)]n (X = Cl (1), X = Br (2), X = CN (4), and X = SCN (5)) in order to understand the potential influence of the halide and pseudohalide bridging ligands on the physical properties and their electrical response to vapors of these materials. The structural characterization of the series shows a common feature, the presence of -X-Cu(ANP)-X- (X = Cl, Br, I, SCN) double chain structure. Complex [Cu(ANP)(CN)]n (4) presents a helical single chain. Additionally, the chains show supramolecular interlinked interactions via hydrogen bonding giving rise to the formation of extended networks. Their luminescent and electrical properties have been studied. The results obtained have been correlated with structural changes. Furthermore, the experimental and theoretical results have been compared using the density functional theory (DFT). The electrical response of the materials has been evaluated in the presence of vapors of diethyl ether, dimethyl methylphosphonate (DMMP), CH2Cl2, HAcO, MeOH, and EtOH, to build up simple prototype devices for gas detectors. Selectivity toward gases consisting of molecules with H-bonding donor or acceptor groups is clearly observed. This selective molecular recognition is likely due to the 2-amino-5-nitropyridine terminal ligand.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. Safety of Cuprous thiocyanate. Introducing a new discovery about 1111-67-7, Name is Cuprous thiocyanate

In the presence of phosphine chalcogenoniobates such as Li3[NbS4] · 4 CH3CN (I), (NEt4)4[Nb6S17] · 3 CH3CN (II) and (NEt4)2[NbE?3(EBu)] (IIIa: E? = E = S; IIIb: E = Se, E? = S; III c: E = E? = Se) respectively react with copper and gold salts to give a number of new heterobimetallic niobium copper(gold) chalcogenide clusters. These clusters show metal chalcogenide units already known from the complex chemistry of the tetrachalcogenometalates [ME4]n- (M = V, n = 3, E = S; M = Mo, W, n = 2, E = S, Se). The compounds 1-8 owe a central tetrahedral [NbE4] structural unit, which coordinates eta2 from two to five coinage metal atoms, employing the chalcogenide atoms of the [NbE4] edges. The compounds 9-11 have a [M?2Nb2E4] (M? = Cu, Au) heterocubane unit in common, involving a metal metal bond between the niobium atoms, while the compounds 12 and 13 show a complete and 14 an incomplete [M?3NbE3X] heterocubane structure (X = Cl, Br). 15 consists of a Cu6Nb2 cube with the six planes capped by mu4 bridging selenide ligands forming an octahedra. The compounds 1-15 are listed below: (NEt4)?1[Cu2NbSe 2S2(dppe)2] · 2 DMF (1), [Cu3NbS4(PPh3)4] (2), [Au3NbSe4(PPh3)4] · Et2O (3), [Cu4NbS4Cl(PCy3)4] (4), [Cu4NbS4Cl(PBu3)4] · 0,5 DMF (5), [Cu4NbSe4(NCS)(PBu3)4] · DMF (6), [Cu4NbS4(NCS)(dppm)4] · Et2O (7), [Cu5NbSe4Cl2(dppm)4] · 3 DMF (8), [Cu2Nb2S4Cl2(PMe3) 6] · DMF (9), [Au2Nb2Se4Cl2(PMe3) 6] · DMF (10), (NEt4)2[Cu3Nb2S 4(NCS)5(dppm)2(dmf)] · 4 DMF (11), [Cu3NbS3Br(PPh3)3(dmf) 3]Br · [CuBr(PPh3)3] · PPh3 · OPPh3 · 3 DMF (12), [Cu3NbS3Cl2(PPh3) 3(dmf)2] · 1.5 DMF (13), (NEt4)[Cu3NbSe3Cl3(dmf)3] (14), [Cu6Nb2Se6O2(PMe3) 6] (15). The structures of these compounds were obtained by X-ray single crystal structure analysis. WILEY-VCH Verlag GmbH, D-69451 Weinheim, 2001.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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Charge-selective disordered hetero-junctions were formed in evaporated In2S3 layers by diffusing at 200 C CuI from a CuSCN source. The thicknesses of In2S3 layers and diffusion times were varied between 5 and 80 nm and between 2 and 19 min, respectively. In some cases CuSCN layers were etched back with pyridine. Spectral and time-dependent surface photovoltage measurements were carried out in the capacitor arrangement. It was observed that a competing process of charge separation and relaxation was initiated together with the formation of the charge-selective In2S3/In2S3:Cu hetero-junction. Modulated SPV amplitude for different annealing times and thicknesses of the evaporated In2S3 layers. Copyright

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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(Hetero)aryl, benzylic, and alkyl zinc halides were thiolated with N-thiophthalimides at 25 C within 1 h in the presence of 5?10 % Cu(OAc)2?H2O to furnish the corresponding polyfunctionalized thioethers in good yields. This electrophilic thiolation was extended to the introduction of trifluoromethylthio (SCF3), thiocyanate (SCN), and selenophenyl (SePh) groups. The utility of this method was shown in a seven-step synthesis of a potent cathepsin D inhibitor in 34 % overall yield.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”