63699-58-1

Upstream product

• 75-31-0 isopropylamine 
• 4092-82-4 sodium N,N'-diisopropyldithiocarbamate 
• 75-15-0 carbon disulfide 
• 12775-96-1 copper 
• 108-18-9 diisopropylamine 

Relevant academic research and scientific papers

The crystal structure, equilibrium and spectroscopic studies of bis(dialkyldithiocarbamate) copper(II) complexes [Cu2(R2dtc)4] (dtc=dithiocarbamate)

Four copper(II) complexes of bis(dialkyldithiocarbamate) [Cd(R2dtc)2] (R=Me, Et, Pr, i-Pr; dtc=dithiocarbamate) have been prepared and characterized by elemental analysis, IR and ESR spectra studies. Their equilibrium constants (K), determined by a UV-vis spectrometry in EtOH, were influenced by the alkyl groups in the following order: i-Pr>n-Pr≈Et>Me. The single crystal structures of complex [Cu2(R2dtc)4] have been determined using X-ray diffraction methods. The compounds [Cu2(Et2dtc)4] and [Cu2(Pr2dtc)4] are built of centrosymmetric neutral dimeric [Cu2(R2dtc)4] entities. The copper atom lies in a distorted square-pyramidal environment. The four equatorial donors are two bidentate chelate sulfur atoms from two dtc ligands. One of the sulfur atoms from the third dtc ligand acts as a bridging ligand occupying the apical position of the symmetry-related copper atom in the dimer structure, which is viewed as two edge-sharing distorted square-pyramids. The structure of [Cu2(i-Pr2dtc)4] is square planar with an exactly planar CuS4 unit and nearly planar NCS2 moieties. The Cu-S distances shows small decreases along the series n-Pr>Et>i-Pr, the biggest change being for the diisopropyl complex. The alkyl substituents at the nitrogen atom affect their coordination number and CuCu distance. In the solid, [Cu2(n-Pr2dtc)4] has the shortest CuCu distance and [Cu(i-Pr2dtc)2] has the longest one. Elsevier Science Ltd.

Thermal and structural characterization of a series of homoleptic Cu(II) dialkyldithiocarbamate complexes: Bigger is only marginally better for potential MOCVD performance

A series of Cu(II) dialkyldithiocarbamate complexes, Cu(S2CNRR′)2, with R = R′ = n-Bu (1); i-Bu (2); c-Hex (3); CH2Ph (4); R = n-Bu, R′ = Et (5); R = n-Pr, R′ = c-PrCH2 (6); R = R′ = n-Pr (7); i-Pr (8); allyl (9), were prepared. The thermal properties of the complexes were investigated to determine if their potential performance in chemical vapor deposition processes was affected by the nature of the peripheral substituents of the ancillary ligands. Modest gains in volatility were noted for 2 and 7 over the most often utilized complex with R = R′ = Et, while 1 and 8 had thermal parameters and stability comparable to this standard. Unsymmetrical substitution, such as in 5, also improved volatility, with some loss of stability for this particular compound. X-ray diffraction studies of complexes 1-6 suggested that long range Cu?S interactions in the solid-state have little bearing on the thermal properties of this class of Cu(II) complexes.

Structure and magnetic properties of bis(N,N-diisopropyldithiocarbamato)copper(II)

The complex bis(N,N-diisopropyldithiocarbamato)copper(II), C14H28CuN2S4, crystallizes in the space group P1 of the triclinic system with Z = 2. The unit cell has parameters a = 11.559 (3) ?, b = 11.692 (3) ?, c = 7.629 (2), ?, α = 96.35 (2)°, β = 96.35 (2)°, and γ = 88.78 (2)°. The final weighted R factor is 0.048 based on 1625 [intensity ≥ 2.5σ(I)] measured reflections. The two independent half-molecules in the unit cell are square planar with exactly planar CuS4 units and nearly planar >NCS2 moieties. The average of the four independent copper-sulfur distances is 2.283 ?, and the average of the four carbon-sulfur distances is 1.716 ?. The latter distance is indicative of considerable double-bond character. The shortest copper-copper intermolecular distance is 7.629 ?, and the shortest copper-sulfur intermolecular distance is 6.041 ?. There are significant intermolecular antiferromagnetic interactions transmitted over these long distances, as reflected by the reduction of the magnetic moment from about 1.8 μβ near 20 K to 1.5 μΒ at 1.76 K. This observation provides additional documentation that sulfur bridges provide effective superexchange pathways for magnetic interactions between paramagnetic centers.

THE DIRECT ELECTROCHEMICAL SYNTHESIS OF DIALKYLDITHIOCARBAMATE AND DIETHYLDITHIOPHOSPHATE COMPLEXES OF MAIN GROUP AND TRANSITION METALS

Dialkyldithiocarbamate derivatives (R2NCS2)nM of a number of metals (M=Fe, Co, Ni, Cu, Ag, Zn, Cd, In, Tl) have been synthesised in good yield by electrochemical oxidation of appropriate sacrificial anodes in non-aqueous solutions of either the corresponding tetraalkylthiuran disulphide (R2NCS2)2 (R=Me, Et) or a mixture of carbon disulphide plus the secondary amine R2NH (R=Et, i-Pr; R2NH=piperidine).Similar experiments with solutions of (EtO)2P(S)SH (=HL) gave MLn* derivatives (M=Fe, Co, Ni, Cu, Ag, Au, Zn, Cd, Hg, Ga, In, Tl) while in the presence of HL+1,10-phenanthroline, MLn.phen derivatives were obtained for M=V, Mn, Fe, Co, Zn, and Ga.

Electron Spin Resonance Study of Some Copper(II) Dithiocarbamates and their Mixed-ligand Complexes

The e.s.r. spectra of seven copper(II) dithiocarbamates have been recorded in chloroform-ethanol mixtures at room temperature and at 113 K.It has been found that the addition of a range of salts to these dithiocarbamates destroys the complex forming a mixed-ligand complex, , with a new e.s.r. spectrum.When X is Cl or Br the additional interaction of the unpaired electron with a single halogen nucleus is observed.The complex forms a dipole-dipole coupled dimer and a computer simulation of the ΔMs = 2 absorption of this dimer has been obtained.

Magnetic and Structural Studies on Copper(II) Dialkyldithiocarbamates

The magnetic susceptibilities of a series of copper(II) dialkyldithiocarbamates have been measured over the range 4-290 K, the alkyl groups being methyl, ethyl, isopropyl, and n-butyl.Contrary to a previous report of strong ferromagnetic interaction in the diethyl derivative, we find no evidence of any significant exchange interaction in this compound.The dimethyl and di-isopropyl analogues show weak antiferromagnetic interactions.Only the di-n-butyl derivative in the dialkyl series shows evidence of strong magnetic exchange interaction but of an antiferromagnetic nature; this effect is peculiar to the phase recrystallized from chloroform-light petroleum (α), the phase obtained from chloroform-ethanol (β) showing no such interaction.To seek the origin of the exchange interaction in the α derivative, its crystal structure has been determined by single-crystal X-ray diffraction methods at 295 K and refined by least squares to a residual 0.032 for 1976 'observed' reflections.Crystals are triclinic, P1, a=15.29(1), b=9.963(7), c=9.243(7) Angstroem, α=67.94(7), β=82.92(7), γ=71.55(7) deg, and Z=2.The copper environment is the usual pseudo-square-planar array of four sulphur atoms from two bidentate ligands (, 2.31 Angstroem), but there is a long fifth interaction S, 2.899(4) Angstroem> through the inversion centre leading to pseudo-dimer formation.Although similar to the diethyl analogue in this respect, differences are observed in regard to (a) the bridging geometry in the 'dimer' and (b) the proximity to the 'dimer' sulphur ligands of sulphur atoms from neighbouring dimers at ca. 3.8 Angstroem.The likely relative importance of these two features in determining the origin of the antiferromagnetic coupling is discussed.The structure of the β phase has also been determined, the final residual being 0.036 for 1324 'observed' reflections.Crystals are monoclinic, P21/n, a= 14.593(5), b= 7.840(2), c= 10.822(5) Angstroem, β= 101.55(3) deg, and Z= 2.The molecules are located with the copper atoms on crystallographic centres of symmetry, and the only significant intermolecular interactions observed are SH contacts.The CuS4 entity is planar with 2.30 Angstroem.