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• W2029648943 abstract "The crystal structure of trans-tetrakis(pyrazole)-bisisothiocyanatomanganese(II), (C3H4N2)4(NCS)2-Mn(II), was determined from single-crystal three-dimensional X-ray diffractometer data. The compound crystallizes as almost colourless cubes in the space group C2/c. The unit cell parameters are a = 11.485(4), b = 12.513(4), c = 14.554(11) Å and β = 105.04(5)°, Z = 4. The structure was solved by Patterson and Fourier syntheses and the full-matrix least-squares refinement of 877 unique reflections gave the final value of R = 0.040. There are discrete molecules in the crystal. The structure consists of centrosymmetric complex units in which the central Mn(II) ion is in an octahedral planar arrangement of two N(1) coordinated and two N(3) coordinated pyrazole molecules occupying the equatorial sites at distances of 2.247(5) and 2.237(5) Å, respectively. The apical sites are occupied by two symmetry-related N(5) coordinated isothiocyanato anions at 2.202(6) Å and in trans-positions with respect of each other, as are the opposite pyrazole molecules in the basal plane. The neighboring pyrazole planes are tilted toward each other and the basal plane. The structure is held together primarily through hydrogen bonds approximately in b- and c-directions from S(1) atom of each isothiocyanato anion to two pyrazole NH groups of the neighboring molecule and the interaction of the stacked parallel pyrazole rings, especially in the c-direction. The paramagnetic susceptibility follows the Curie-Weiss law at temperatures from 93 to 298 K. The IR spectrum shows MN bands. The reflectance spectrum has one band at 23 260 cm−1 assigned to the 6A1g → 4T2g transition. The TG curve points to two kinds of pyrazole with different bonding strengths in the structure." @default.
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• W2029648943 title "X-ray structure of trans-tetrakis(pyrazole)bisisothiocyanatomanganese(II) and its magnetic, spectral and thermal properties" @default.
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• W2029648943 doi "https://doi.org/10.1016/s0020-1693(00)83663-4" @default.
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