Abstract
A series of gold(I) monoisocyanide [AuCl(CNC6H4-4-X)] (X = Cl (IIa), Br (IIb), I (IIc) and bis-isocyanide [Au(CNC6H4-4-X)2](PF6) (X = Cl (IIIa), Br (IIIb), I (IIIc) complexes were prepared by the reaction of [AuCl(Tht)] (Tht = tetrahydrothiophene) with the specified isocyanide. The molecular structure of IIa–IIc was established by X-ray diffraction (CCDC no. 2253450 (IIa), 2253447 (IIb), 2253448 (IIc)). The crystals of IIb and IIc are isostructural; they were found to have several types of intermolecular interactions, particularly, C–X⋯Cl–Au halogen bonds, π-hole (CCNR)···\(~{{d}_{{{{z}^{2}}}}}\)(Au) interactions, and Au⋯Au aurophilic contacts, which form together a two-layer 2D supramolecular polymer. The crystals of IIb, IIc and IIIa, IIIb exhibit phosphorescence at room temperature; compounds IIa and IIIc do not possess luminescent properties; and mechanical grinding of IIa‒IIc and IIIa‒IIIc powders does not change the photophysical properties.
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ACKNOWLEDGMENTS
This study was carried out using research equipment of the resource centers of the Saint Petersburg State University: Magnetic Resonance Investigation Methods; X-ray Diffraction Investigation Methods; Methods of Analysis of the Compound Composition; Educational Center in Chemistry; Optical and Laser Methods of Investigation of Matter; Center for Diagnostics of Functional Materials for Medicine, Pharmacology, and Nanoelectronics; and Cryogenic Department and Computer Center. The authors are grateful to A.S. Ketova for conducting test experiments in the initial stages of the study. The authors wifh to thank Yu.R. Shakirova for valuable comments and useful discussion.
Funding
This study was supported by the Russian Science Foundation (no. 21-73-10083).
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To the 300th year anniversary of the foundation of the Saint Petersburg State University
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Gavrilov, G.A., Davletbaeva, K.N. & Kinzhalov, M.A. Gold(I) Chloride Complexes with 4-Halo-Substituted Phenyl Isocyanide Ligands. Russ J Coord Chem 50, 40–48 (2024). https://doi.org/10.1134/S1070328423600596
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DOI: https://doi.org/10.1134/S1070328423600596