Hexaaquanickel(II) bis[2-carboxylato-2-(isothiouronium-S-ylmethyl)propane-1,3-diyl phosphate] hexahydrate

Area of Science:

• Inorganic Chemistry
• Crystallography
• Supramolecular Chemistry

Background:

• Nickel complexes are vital in catalysis and materials science.
• Supramolecular chemistry explores self-assembly through non-covalent interactions.
• Phosphate esters play roles in biological systems and material design.

Purpose of the Study:

• To synthesize and characterize a novel nickel(II) complex with a specific phosphate ester anion.
• To investigate the crystal structure and supramolecular assembly of the complex.
• To explore the hydrogen bonding capabilities of the polyfunctional anion.

Main Methods:

• Single-crystal X-ray diffraction to determine the crystal structure.
• Analysis of coordination geometry and hydrogen bonding interactions.
• Identification of supramolecular networks formed by cations and anions.

Main Results:

• The crystal structure of [Ni(H(2)O)(6)](C(6)H(10)N(2)O(6)PS)(2) x 6 H(2)O was determined.
• Hexaaquanickel(II) cations form 2D supramolecular networks via water chains.
• The phosphate ester anion mediates complex hydrogen bonding, forming a second 2D network.

Conclusions:

• A novel nickel(II) complex featuring a unique phosphate ester anion was successfully synthesized and characterized.
• The polyfunctional anion, derived from ring-opening of a carboxylate-caged phosphate ester, is key to complex hydrogen bonding.
• The study demonstrates the potential of such anions in constructing intricate supramolecular architectures.