Abstract
The title compound, poly[tri-aqua-bis-[μ4-N,N'-(1,3,5-oxadiazinane-3,5-di-yl)bis(carbamoyl-methano-ato)]dinickel(II)tetra-potassium], [K4Ni2(C7H6N4O7)2(H2O)3] n , is a second solvatomorph of poly[(μ4-N,N'-(1,3,5-oxadiazinane-3,5-di-yl)bis-(carbamoyl-methano-ato)nickel(II)dipotassium] reported previously [Plutenko et al. (2021 ▸). Acta Cryst. E77, 298-304]. The asymmetric unit of the title compound includes two structurally independent complex anions [Ni(C7H6N4O7)]2-, which exhibit an L-shaped geometry and consist of two almost flat fragments perpendicular to one another: the 1,3,5-oxadiazinane fragment and the fragment including other atoms of the anion. The central Ni atom is in a square-planar N2O2 coordination arrangement formed by two amide N and two carboxyl-ate O atoms. In the crystal, the title compound forms a layered structure in which layers of negatively charged complex anions and positively charged potassium cations are stacked along the a-axis direction. The polymeric framework is stabilized by a system of hydrogen-bonding inter-actions in which the water mol-ecules act as donors and the carb-oxy-lic, amide and water O atoms act as acceptors.
Highlights
Chemical contextIn 1976, the products of the metal-templated reaction of hydrazide and aldehyde were separated and structurally described (Clark et al, 1976)
Diyl)bis(carbamoylmethanoato)nickel(II)dipotassium] reported previously [Plutenko et al (2021)
The central Ni atom is in a square-planar N2O2 coordination arrangement formed by two amide N and two carboxylate O atoms
Summary
In 1976, the products of the metal-templated reaction of hydrazide and aldehyde were separated and structurally described (Clark et al, 1976). The preparation of an unprecedentedly stable iron(IV) clathrochelate complex was reported (Tomyn et al, 2017). Some such compounds are promising redox catalysts, as has been shown by Pap et al (2011) and Shylin et al (2019). Both compounds can be obtained in a similar fashion as the result of a one-pot template reaction (see Fig. 1)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have