Diamond-like Cage Motifs in {Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>} Complexes with Pyridines

The reduction of Cu(NO<sub>3</sub>)<sub>2</sub> by HS<sup>t</sup>Bu in CH<sub>3</sub>CN under Ar atmosphere produces a light-yellow solution containing numerous {Cu<sub>x</sub>(S<sup>t</sup>Bu)<sub>y</sub>} species....

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Bibliographic Details
Main Authors: Taisiya S. Sukhikh, Maxim N. Sokolov, Pavel A. Abramov
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Crystals
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Online Access:https://www.mdpi.com/2073-4352/15/7/607
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Summary:The reduction of Cu(NO<sub>3</sub>)<sub>2</sub> by HS<sup>t</sup>Bu in CH<sub>3</sub>CN under Ar atmosphere produces a light-yellow solution containing numerous {Cu<sub>x</sub>(S<sup>t</sup>Bu)<sub>y</sub>} species. The addition of different pyridines (py-R) into this solution results in the formation of {Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>} hexanuclear complexes. The slow Et<sub>2</sub>O diffusion leads to crystals of [Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(2-Me-py)<sub>5</sub>(CH<sub>3</sub>CN)(NO<sub>3</sub>)](NO<sub>3</sub>) (<b>1</b>), [Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(Me<sub>3</sub>py)<sub>4</sub>(NO<sub>3</sub>)<sub>2</sub>]·3.5CH<sub>3</sub>CN (<b>2a</b>), [Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(Me<sub>3</sub>py)<sub>5</sub>(NO<sub>3</sub>)](NO<sub>3</sub>)·5CH<sub>3</sub>CN (<b>2b</b>), (NHEt<sub>3</sub>)[Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(CH<sub>3</sub>CN)<sub>3</sub>(NO<sub>3</sub>)<sub>3</sub>]·H<sub>2</sub>O (<b>3</b>), [Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(2-Br-py)<sub>4</sub>(NO<sub>3</sub>)<sub>2</sub>]·2-Br-Py (<b>4</b>), [Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(3-Br-py)<sub>6</sub>][Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(CH<sub>3</sub>CN)<sub>6</sub>](NO<sub>3</sub>)<sub>4</sub>·9CH<sub>3</sub>CN (<b>5</b>), and [Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(3-Cl-py)<sub>6</sub>][Cu<sub>6</sub>(S<sup>t</sup>Bu)<sub>4</sub>(CH<sub>3</sub>CN)<sub>6</sub>](NO<sub>3</sub>)<sub>4</sub>·5CH<sub>3</sub>CN (<b>6</b>). The titled compounds were characterized by single crystal X-ray diffraction (SCXRD). The Cu···Cu contacts were analyzed with quantum chemical methods.
ISSN:2073-4352