名称:
Tetrakis(Isothiocyanato)zinc(II) 4,7,13,16,21,24-Hexaoxa-1,10-diazoniabicyclo[8.8.8]hexacosane: Synthesis and Crystal Structure
摘要:
The salt tetrakis(isothiocyanato)zinc(II) 4,7,13,16,21,24-hexaoxa-1, 10-diazoniabicyclo[8.8.8]hexacosane, [H-2(Crypt-222)](2+) . [Zn(NCS)(4)](2-) (I), was synthesized and its structure was determined using X-ray diffraction analysis: space group P2(1)/n, a = 13.734 Angstrom, b = 11.627 Angstrom, c = 20.816 Angstrom, beta = 91.51degrees, Z = 4. The structure was solved by direct methods and anisotropically refined by the full-matrix least-squares method to R = 0.093 for 4920 independent reflections (CAD4 autodiffractometer, lambdaCuK(alpha) radiation). The structural units of crystal I are 2.2.2-cryptand dications (with two protonated nitrogen atoms) and complex anions [Zn(NCS)(4)](2-). The coordination polyhedron of the Zn2+ cation is a distorted tetrahedron. The 2.2.2-cryptand dication contains trifurcate N-H(...O)(3) hydrogen bonds.