Six-Membered Thiolate–Thione Chelate Complexes of Group 10 Elements─Syntheses, Crystal Structures, and NMR Studies
Imido-<i>C</i>,<i>C'</i>-dithiodicarbonic-<i>O</i>,<i>O</i>'-dialkyl esters (alkyl: <b>1</b> = Me, <b>2</b> = Et, <b>3</b> = <sup><i>i</i></sup> Pr) were synthesized by facile synthetic protocols. They form air-stable complexes with divalent group 10 ions (Ni-[<b>1</b>]<sub>2</sub>, Ni-[<b>2</b>]<sub>2</sub>, Ni-[<b>3</b>]<sub>2</sub>, Pd-[<b>1</b>]<sub>2</sub>, Pd-[<b>2</b>]<sub>2</sub>, Pd-[<b>3</b>]<sub>2</sub>, Pt-[<b>1</b>]<sub>2</sub>, Pt-[<b>2</b>]<sub>2</sub>, and Pt-[<b>3</b>]<sub>2</sub>). In their crystal structures, the metal center is coordinated by four sulfur atoms of two anionic ligands in a slightly distorted square planar fashion. The backbones of all complexes show distortion depending on the bulkiness of the ligand. A comparison of bond lengths in free ligands and their respective complexes reveals CS bond length extension and CN bond length shortening due to electron delocalization among the S-C-N-C-S moiety. The <sup>13</sup>C NMR spectra show a dominating influence of the metal center, while the effect of the different alkyl chains is negligible.
Authors
- Stephan Hohloch (ORCID: https://orcid.org/0000-0002-5353-0801)
- Hennes Günther
- Frank Tambornino (ORCID: https://orcid.org/0000-0003-3538-6049)
Institutions
- Philipps University of Marburg (DE)
- Universität Innsbruck (AT)
Publication Details
- Journal
- ACS Omega
- Published
- 2025-10-15
- DOI
- https://doi.org/10.1021/acsomega.5c06668
- Primary Topic
- Synthesis and characterization of novel inorganic/organometallic compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00