5-Cyclohexyl-1,3-diphenyl-1,3,5-diazaphosphinane, its phosphine oxide, and its [NiCl <sub>2</sub> <i>L</i> <sub>2</sub> ] complex
The crystal structures of 5-cyclo-hexyl-1,3-diphenyl-1,3,5-di-aza-phosphinane, C<sub>21</sub>H<sub>27</sub>N<sub>2</sub>P, and its oxidized phosphine oxide, 5-cyclo-hexyl-1,3-diphenyl-1,3,5-di-aza-phosphinan-5-one, C<sub>21</sub>H<sub>27</sub>N<sub>2</sub>OP, have primitive monoclinic symmetry (both in space group <i>P</i>2<sub>1</sub>/m) at 150 K. The nickel(II) complex <i>trans</i>-di-chlorido-bis-(5-cyclo-hexyl-1,3-diphenyl-1,3,5-di-aza-phosphinane-κ<i>P</i>)nickel(II), [NiCl<sub>2</sub>(C<sub>21</sub>H<sub>27</sub>N<sub>2</sub>P)<sub>2</sub>], consists of two di-aza-phosphinane ligands (monoclinic <i>C</i>2/<i>c</i>, 150 K) bound through their phospho-rous atoms, which adopts a four-coordinate square-planar geometry. The bulky cyclo-hexyl substituents of the ligand are axially positioned in their respective chair six-membered ligand rings, and are in an <i>anti</i>-configuration, with respect to the square plane. The nickel atom is located on a center of symmetry.
Authors
- Jacqueline B. Vo (ORCID: https://orcid.org/0000-0001-8891-4437)
- David Esjornson
- Denise A. Anderson
- Allen G. Oliver (ORCID: https://orcid.org/0000-0002-0511-1127)
- Jeanette A. Krause (ORCID: https://orcid.org/0000-0001-8098-8028)
Institutions
- University of Notre Dame (US)
- Southwestern Oklahoma State University (US)
- University of Cincinnati (US)
Publication Details
- Journal
- Acta Crystallographica Section E Crystallographic Communications
- Published
- 2025-11-11
- DOI
- https://doi.org/10.1107/s2056989025010011
- Primary Topic
- Organometallic Complex Synthesis and Catalysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- Oklahoma State University
- Lawrence Berkeley National Laboratory