Synthesis, crystal structure and magnetism of [Cu(cyclam)Ni(NCS)4(H2O)2]n

Authors

  • Ivana Kočanová
  • Juraj Kuchár
  • Martin Orendáč
  • Roman Boča
  • Juraj Černák

DOI:

https://doi.org/10.1515/nbec-2017-0010

Keywords:

Copper, Nickel, Crystal structure, Chain-like structure, Magnetic properties

Abstract

[Cu(cyclam)Ni(NCS)4(H2O)2]n (1) (cyclam = 1,4,8,11-tetraazacyclodecane) exhibits bent 1D crystal structure in which paramagnetic Cu(II) and Ni(II) atoms are linked by bridging μ2-NCS- ligands. The Cu(II) atom exhibit tetragonally elongated hexacoordination in the 4+2 form with one tetradentate macrocyclic cyclam ligands placed in the equatorial plane while the axial positions are occupied by S atoms from bridging NCS- ligands. The Ni(II) atom in NiN4O2 donor set is deformed octahedrally coordinated by four isothiocyanato ligands among which two in trans positions are bridging in nature; additional aqua ligands occupy the remaining two positions in trans arrangement. Weak hydrogen bonding interactions of the O-H···S type links the formed chains into 3D supramolecular structure. The magnetism of 1 is dominated by a sizable single-ion anisotropy DNi/hc = +7.49 cm-1 along with a weak exchange interaction of the ferromagnetic nature.

Downloads

Published

2017-08-01

How to Cite

Kočanová, I. ., Kuchár, . J. ., Orendáč, . M., Boča, . R. ., & Černák, . J. . (2017). Synthesis, crystal structure and magnetism of [Cu(cyclam)Ni(NCS)4(H2O)2]n. Nova Biotechnologica Et Chimica, 16(1), 68–75. https://doi.org/10.1515/nbec-2017-0010

Issue

Vol. 16 No. 1 (2017)

Section

Research Articles

License

All papers published in the Nova Biotechnologica et Chimica (NBC)  are published under a CC-BY licence (CC-BY 4.0). Published materials can be shared (copy and redistribute the material in any medium or format) and adapted (remix, transform, and build upon the material for any purpose, even commercially) with specifying the author(s).