Crystal structure of [Ni(OH<sub>2</sub>)<sub>6</sub>]Cl<sub>2</sub>·(18-crown-6)<sub>2</sub>·2H<sub>2</sub>O
The crystal structure of the title compound, hexa-aqua-nickel(II) dichloride-1,4,7,10,13,16-hexa-oxa-cyclo-octa-deca-ne-water (1/2/2), [Ni(H<sub>2</sub>O)<sub>6</sub>]Cl<sub>2</sub>·2C<sub>12</sub>H<sub>24</sub>O<sub>6</sub>·2H<sub>2</sub>O, is reported. The asymmetric unit contains half of the Ni(OH<sub>2</sub>)<sub>6</sub> moiety with a formula of C<sub>12</sub>H<sub>32</sub>ClNi<sub>0.50</sub>O<sub>10</sub> at 105 K and triclinic (<i>P</i>1) symmetry. The [Ni(OH<sub>2</sub>)<sub>6</sub>]<sup>2+</sup> cation has close to ideal octa-hedral geometry with O-Ni-O bond angles that are within 3° of idealized values. The supra-molecular structure includes hydrogen bonding between the water ligands, 18-crown-6 mol-ecules, Cl<sup>-</sup> anions, and co-crystallized water solvent. Two crown ether mol-ecules flank the [Ni(OH<sub>2</sub>)<sub>6</sub>]<sup>2+</sup> mol-ecule at the axial positions in a sandwich-like structure. The relatively symmetric hydrogen-bonding network is enabled by small Cl<sup>-</sup> counter-ions and likely influences the more idealized octa-hedral geometry of [Ni(OH<sub>2</sub>)<sub>6</sub>]<sup>2+</sup>.
Authors
- S. Chantal E. Stieber (ORCID: https://orcid.org/0000-0003-3778-207X)
- Jacob P. Brannon (ORCID: https://orcid.org/0000-0001-7786-127X)
- K. S. Liang (ORCID: https://orcid.org/0009-0004-2865-410X)
Institutions
- California State Polytechnic University (US)
Publication Details
- Journal
- Acta Crystallographica Section E Crystallographic Communications
- Published
- 2024-10-24
- DOI
- https://doi.org/10.1107/s2056989024010041
- Primary Topic
- Crystal structures of chemical compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Camille and Henry Dreyfus Foundation
- Directorate for Mathematical and Physical Sciences
- U.S. Army