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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis, crystal and molecular structure and vibrational characterization of N,N-dimethyl-oxathioamidate monohydrate (1994)
    Springer
    Journal of chemical crystallography 24 (1994), S. 615-620 
    Details
    ISSN: 1572-8854
    Keywords: (SO2NC4H6) ; metal(II) complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The title compound (SO2NC4H6) has been prepared and characterized by X-ray diffraction and infra-red and Raman spectra. The structure has been refined using single-crystal X-ray diffraction data measured at 295K [MoKα-radiation with λ=0.71073 Å]. The crystals are monoclinic, space groupP21/n,Z=4,a=6.240(2),b=6.786(2),c=19.988(1)Å, γ=108.47(2)°,V=802.8(7)Å3.D calc.=1.566 Mg m−3,F(000)=392, μ=8.582 cm−1. The final agreement factors for 1906 observed refections [I〉3σ(I)] were:R=0.030 andR w=0.043. The dihedral angle between de C−C−S−N plane and the C−C−O−O plane is 88.31(4). The potassium atom within the title compound structure has a slightly distorted trigonal bipyramidal coordination. Infrared and Raman spectra of the normal CH3/CD3 and H2O/D2O isotopes and the waterfree compounds at different temperatures made it possible to perform isotopes complete vibrational analysis and clearly shows the very special hydrogen bonded water molecule in the crystal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01671676
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  • 2
    Electronic Resource
    Electronic Resource
    The crystal structure and vibrational spectra of potassium oxathioamidate (1995)
    Springer
    Journal of chemical crystallography 25 (1995), S. 181-187 
    Details
    ISSN: 1572-8854
    Keywords: Potassium oxathioamidate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal and molecular structure determination of the title compound, K−SO2NC2H2,M r=143.21, (1) is part of a series of determinations of N-substituted oxathioamidates. The structure has been refined using single-crystal X-ray diffraction data measured at 295 K [MoKα-radiation with λ=0.71073 Å]. The crystals are orthorhombic, space group Pn2la,Z=8, with cell dimensions:a=11.399(2) Å,b=22.131(2) Å,c=4.021(1) Å,V=1014.5(7) Å3.D calc.=1.875 mg m−3, Dobs=1.600 mg m−3,F(000)=576, μ=13.14 cm−1. The final agreement factors for 1979 observed reflections [I〉3σ(I)] were:R=0.062 andR w=0.067. The vibrational spectra confirm the geometrical differences between the two thiooxamidate molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01666104
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  • 3
    Electronic Resource
    Electronic Resource
    Catena-μ-(3,5-diamino-1,2,4-triazole N1, N3)-bis(thiocyanato-N) cadmium(II): Synthesis, crystal and molecular structure, and infrared and Raman characterization (1990)
    Springer
    Journal of chemical crystallography 20 (1990), S. 355-362 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The title compound (C6H10CdN12S2) was prepared and characterized by means of X-ray, Raman, and IR measurements. The crystals are orthorhombic:Pbcn, (No. 60),a=9.558(2),b=9.491(2),c=15.898(2) Å,Z=4. The structure was solved by the heavy-atom method, and least-squares refinement of structural parameters led toR=0.021 (R w =0.020) for 863 independent reflections. The compound exhibits two-dimensional Cd(II) networks, with the 1,2,4-triazole molecule acting as a bidentate bridging ligand. The structure consists of centrosymmetric units, in which the cadmium atoms are coordinated in distorted octahedral geometries by six nitrogen atoms. Each cadmium atom is linked by four 1,2,4-triazole molecules, and two thiocyanate ions complete the octahedral coordination around the metal. Each 1,2,4-triazole molecule bridges two cadmium atoms. The NH and NH2 groups of the guanazole unit are involved in intermolecular hydrogen bonds. Infrared and Raman bands are diagnostic of the coordination environments around the metal atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01274143
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  • 4
    Electronic Resource
    Electronic Resource
    Complexes of nickel(II) and palladium(II) with thiobenzamide (1979)
    Springer
    Transition metal chemistry 4 (1979), S. 46-48 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The electronic and vibrational spectra of NiII and PdII complexes with thiobenzamide, L, are discussed. L acts as a sulphur donor ligand. The PdII compounds and (NiL4)(ClO4)2 are square planar. PdL2Cl2 has acis-structure, while PdL2X2 (X=Br or I) istrans; NiL4Cl2 istrans-octahedral. The i.r. bands due toν(M.S) andν(MX) have been assigned. The influence of the anions on the properties of the complexes, both in solution and in the solid state, is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00941017
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  • 5
    Electronic Resource
    Electronic Resource
    Palladium(II) complexes with primary thioamides (1978)
    Springer
    Transition metal chemistry 3 (1978), S. 144-146 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Palladium(II) complexes of thioacetamide, thiooxamide,N o,N o-dimethylthiooxamide and ethyl thiooxamidate have been prepared and investigated by electronic and i.r. spectroscopy. It is concluded that the ligands always act as monodentate sulphur donors, and that planar [PdL4]X2 (X = Cl, Br or ClO4) compounds are formed. Theν(PdS) frequencies and the ligand field strengths are enhanced by electron donor groups and lowered by electron withdrawing groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01393531
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  • 6
    Electronic Resource
    Electronic Resource
    Transition metal complexes with neutral and deprotonated malonamide (1994)
    Springer
    Transition metal chemistry 19 (1994), S. 468-476 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary New complexes of the general formulae [M(LH2)2Cl2] (M = Mn, Fe, Co, Ni, Cu, Zn), [Mn(LH2)2X2] (X = Br, I), [Cu(LH2)2Br2], [Ni(LH2)2X2] (X = Br, NCS, ONO2), [Cu(LH2)X2]n (X = Cl, Br), K2[NiL2]·2H2O and K2-[CuL2]·H2O, where LH2 = malonamide, were isolated. The complexes were characterized by elemental analyses, X-ray powder patterns, magnetic susceptibilities and spectroscopic (variable-temperature 57Fe-Mössbauer, e.s.r., u.v.-vis., i.r., far-i.r., Raman) studies. Monomeric trans pseudo-octahedral stereochemistries for the neutral 1∶2 complexes and square planar structures of D 2h symmetry for the two ionic complexes are assigned in the solid state. Dimeric or polymeric five-coordinate structures are proposed for the 1∶1 copper(II) compounds. LH2 and L2− behave as bidentate chelating ligands binding through oxygen and deprotonated nitrogen atoms, respectively. A detailed comparison of the studied complexes with the corresponding oxamide complexes is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00139331
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis, spectroscopy and thermal properties of the nickel(II), palladium(II) and copper(II) complexes of oxalyldihydrazide (1990)
    Springer
    Transition metal chemistry 15 (1990), S. 132-140 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The new complexes K2[ML2]·2H2O (M=Ni, Cu), K2[PdL2]·H2O, K2[CuL2(H2O)2]·H2O, [Ni(LH2)Cl2]x ·xH2O and [Ni(LH2)Br2]x·1,5xH2O, where LH2= oxalyldihydrazide, have been prepared. Emphasis has been put on determining the conditions for the synthesis of both deprotonated and non-deprotonated NiII complexes. They were characterized by analyses, conductivity measurements, thermogravimetry, magnetic susceptibility and spectroscopic methods like i.r. and far-i.r., diffuse reflectance u.v. vis, and e.s.r. Monomeric square planar and distorted octahedral structures were found for the deprotonated complexes in the solid state while the non-deprotonated NiII complexes appeared to be pseudo-tetrahedral polymers. The doubly deprotonated L2-ion exhibits a bidentate N(amide), N(amide)-coordination, while the neutral LH2 molecule behaves as a N(amino), N(amino)-bidentate ligand forming polymeric structures. Vibrational analysis of the complexes was carried out, using hydrogen and metal isotopic substitution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01023902
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  • 8
    Electronic Resource
    Electronic Resource
    Synthesis, spectroscopy and thermal analysis of nickel(II), palladium(II) and copper(II) complexes with N,N′-bis(2-hydroxyethyl)-oxamide (1994)
    Springer
    Transition metal chemistry 19 (1994), S. 542-547 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The new complexes K2[Ni(H2heo)2]·3H2O, K2[Pd-(H2heo)2], K2[Cu(heo)]·3H2O and [Cu2(heo)·2H2O] {heo = [(CONCH2CH2O)2]4-} were prepared and characterized by chemical analyses, conductivity measurements, thermogravimetry, magnetic susceptibility and i.r. and u.v. spectroscopy. Monomeric square planar structures with MN4 coordination spheres are found for the nickel and palladium complex anions. For copper, two different complexes were identified. In slightly alkaline media, a green insoluble nonelectrolyte [Cu2(heo)·2H2O] was prepared; the two copper(II) centres are bridged by the tetra-deprotonated ligand in a trans-planar configuration with the H2O molecules strongly coordinated to the copper(II). The copper(II) monomer has been prepared in strong alkaline media, this anion also contains the tetra-deprotonated ligand in a planar trans form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00136371
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  • 9
    Electronic Resource
    Electronic Resource
    Synthesis, spectroscopy and thermal properties of the nickel(II), palladium(II) and copper(II) complexes of bis(aminoalkyl)-oxamides (=LH2) including the crystal structure of Cu2L(NO3)2 (1991)
    Springer
    Transition metal chemistry 16 (1991), S. 92-101 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The synthesis of the NiII, PdII and CuII complexes of N, N′-bis(aminoalkyl)oxamides (LH2) is described and structures are proposed on the basis of their physical and spectroscopic properties. With NiII and PdII only one complex is formed with general formula NiL or PdL, characterised by coordination through two deprotonated amide N-atoms and two terminal NH2 groups. With CuII it proved possible to obtain three structurally different compounds, depending on the pH, with general formulae Cu(LH2)X2, Cu2(L)X2 and CuL in which X=Cl, Br or NO3. The structure of [Cu2(C8O2N4H16](NO3)2 was solved by means ofx-ray diffraction; Mr=451.33, monoclinic, space group P21/n, a=9.503(4), b=7.614(1), c=10.407(3) Å, β=98.43(3)°, V=744.3(7)Å3, Z=2, Dx=1.202 g cm−3, μ=1.33 cm−1, γ(MoKα)=0.71073 Å, F(000)=520, room temperature, R=0.043, wR=0.047 for 1080 observed [I〉-3σ(I)] not systematically absent reflections out of 1423 measurements and 137 variables. The compound has a conformational chair/boat disorder with 82% in the more stable chair form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01127880
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  • 10
    Electronic Resource
    Electronic Resource
    Gold(I) complexes of thioamides (1980)
    Springer
    Transition metal chemistry 5 (1980), S. 10-14 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Gold(I) forms linear [AuL2]X complexes (X = Cl, Br, I or CIO4) with thioacetamide and thiobenzamide, AuLX compounds with thiobenzamide (X = CI or Br),N, N-dimethylthioformamide (X = Cl, Br or 1) andN-dimethylthioacetamide (X = CI, Br or 1). Thev(AuS) vibrations are assigned in the 320-260 cm−1 range. The i.r. spectra further suggest hydrogen bonding between the ligands and the anions. The conductivity measurements indicate dissociation of the [AuL2]X complexes (X = halide) and coordination of X in solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01396857
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