A mixed-metal pentanuclear complex containing linked NiIIN2S2 and CuII units

Area of Science:

• Coordination Chemistry
• Inorganic Chemistry
• Materials Science

Background:

• Pentanuclear complexes offer unique structural and electronic properties.
• Metal-amine-thiolate complexes are versatile building blocks in coordination chemistry.
• Understanding the synthesis and structure of novel metal complexes is crucial for developing new materials.

Purpose of the Study:

• To synthesize and characterize a novel pentanuclear copper-nickel complex.
• To investigate the structural features and coordination geometry of the complex.
• To explore the potential of [NiIN(amine)2S(thiolate)2] units in forming multinuclear structures.

Main Methods:

• Single-crystal X-ray diffraction to determine the molecular structure.
• Spectroscopic techniques for characterization.
• Elemental analysis to confirm composition.

Main Results:

• The title compound, Bis[(1S,2S)-trans-3,3'-(1,2-cyclohexanediyldinitrilo)bis-(2-methylpropane-2-thiolato)]-1 kappa 4N1,N1',S1,S1';2 kappa 4N2,- N2',S2,S2';3 kappa 2S1,S2';4 kappa 2S1',S2;5 kappa 2S1',S2'-triiodo-3 kappa I, 4 kappa I,- 5 kappa I-tricopper(I)dinicke1(II) bis(acetonitrile) solvate, [[Ni(C14H28N2S2)]2(CuI)3]. 2CH3CN, was successfully synthesized.
• The structure reveals a pentanuclear core where three Cu(II) ions bridge two square-planar Ni(II) units via thiolate ligands.
• Each copper atom exhibits an approximate trigonal planar coordination geometry.

Conclusions:

• The study successfully synthesized and characterized a novel pentanuclear copper-nickel complex.
• The findings demonstrate the utility of [NiIN(amine)2S(thiolate)2] units for constructing complex multinuclear coordination compounds.
• The trigonal planar coordination of copper atoms provides insights into the electronic and structural diversity of such complexes.