ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Structural investigations of nickel(II) complexes. IV. Preparation, properties, and crystal structure of Ni(NCS)₂(pipe)₂(py)H₂O.2pipe

M. Koman, E. Ďurčanská, M. Handlovič, and J. Gažo

Department of Inorganic Chemistry, Slovak Technical University, CS-812 37 Bratislava

Abstract: Ni(NCS)₂(pipe)₂(py)H₂O.2pipe (I) (pipe = piperidine) was prepd. by recrystn. of Ni(NCS)₂(pipe)₄ from pipe contg. pyridine impurity in C₆H₆ and were characterized by elemental anal., thermal, x-ray diffraction, and IR and electronic spectral methods. I crystallizes in the monoclinic space group C2/c, with a=144.09 pm, b=172.51pm, c=140.81 pm, β= 109.32°, and Z = 4. The crystal structure was refined by the least-squares method anisotropically to R = 8.5%. Ni has a pseudooctahedral coordination of atoms NiN₂N¹₂N₂O (N from NCS, N¹ from the pipe, N² from pyridine, and O from H₂O) with bond lengths Ni-N 20.64 pm, Ni-N1 22.08 pm, Ni-N2 21.48 pm, and Ni-O 21.65 pm. The 2 next pipe mols. are H-bonded with H₂O. The bond length O...N (the N from the noncoordinated pipe) is 28.67 pm. The NCS groups are bonded terminally through the N atoms.

Full paper in Portable Document Format: 376a749.pdf

Chemical Papers 37 (6) 749–756 (1983)