Exploring the syntheses, crystal structures and photophysical properties of new anthracene-tethered Ni(II) dithiocarbamates

Structures of anthracene-based Ni(II) dithiocarbamates were revealed by X-ray crystallography. Rare examples of dimeric structures based on intermolecular Ni···S contacts in heteroleptic thiocyanato dithiocarbamates are highlighted. NMR data confirms the facile transformation of heteroleptic chloro...

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Bibliographic Details
Published in:	Inorganica Chimica Acta 2022-10, Vol.541, p.121066, Article 121066
Main Authors:	Nguyen, Tien-Dat, Lau, Mai-Trang, Hoang, Khanh-Linh, Dinh, Thi-Hien, Nguyen, Hung-Huy, Nguyen, Minh-Hai
Format:	Article
Language:	eng
Subjects:	Anthracene Dithiocarbarmate Nickel Photochemistry X-ray crystallography
Online Access:	Get full text
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Summary:	Structures of anthracene-based Ni(II) dithiocarbamates were revealed by X-ray crystallography. Rare examples of dimeric structures based on intermolecular Ni···S contacts in heteroleptic thiocyanato dithiocarbamates are highlighted. NMR data confirms the facile transformation of heteroleptic chloro dithiocarbamates into the parent complexes. Anthracene-based characteristic absorption and emission spectral features are revealed for all compounds. [Display omitted] •Structures of anthracene-based Ni(II) dithiocarbamates revealed by X-ray crystallography.•Facile transformation of heteroleptic chloro dithiocarbamates into the parent complexes.•Unusual dimeric structures based on intermolecular Ni···S contacts.•Anthracene-based characteristic absorption and emission spectral features. A series of mononuclear anthracene-based dithiocarbamate Ni(II) complexes were readily prepared from one-pot reaction between corresponding secondary amine and nickel salt in the presence of carbon disulfide. X-ray crystallographic data reveals the marked difference in square planar structures of Ni(II) dithiocarbamate complexes with and without the presence of chloro and thiocyanato auxiliary ligands. Also, various intermolecular interactions of the complexes in the solid state such as π–π stackings, Ni···S linkages and CH···Ni anagostic bonds are detected. The 1H-NMR results evidently show the steric effect of the anthracenyl and dithiocarbamate moieties upon complexation. Importantly, phosphorus and proton magnetic resonance spectroscopies are tools to probe the facile transformation of the mixed-ligand complexes 3 into the congeners 1 in the solution. The absorption and emission spectral data describe the influence of anthracenyl rings on the photophysics of the complexes 1 and 2.
ISSN:	0020-1693 1873-3255