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Atomically Defined Monocarborane Copper(I) Acetylides with Structural and Luminescence Properties Tuned by Ligand Sterics


Zhang, Kang; Shen, Yunjun; Yang, Xiaoli; Liu, Jiyong; Jiang, Tao; Finney, Nathaniel; Spingler, Bernhard; Duttwyler, Simon (2019). Atomically Defined Monocarborane Copper(I) Acetylides with Structural and Luminescence Properties Tuned by Ligand Sterics. Chemistry - A European Journal, 25(37):8754-8759.

Abstract

The weakly coordinating cluster [CB11H12]− is used as a versatile building block for the preparation of luminescent copper(I) complexes. Treatment of [CB11H11‐12‐C≡CH]− with CuI and ammonia affords {(CB11H11‐12‐C≡C)2Cu4(NH3)3}n (2). Addition of selected phosphine and pyridine ligands transforms 2 to a range of homometallic products 3–13. All compounds have been characterized by X‐ray crystallography, which reveals a surprising variety of structural complexity featuring cores with two to ten Cu+ centers. In the solid state, products 3–13 exhibit room‐temperature phosphorescence across the visible spectrum in colors from blue to deep red. Lifetimes at room temperature are in the microsecond regime, and quantum yields of up to Φ=0.99 are observed.

Abstract

The weakly coordinating cluster [CB11H12]− is used as a versatile building block for the preparation of luminescent copper(I) complexes. Treatment of [CB11H11‐12‐C≡CH]− with CuI and ammonia affords {(CB11H11‐12‐C≡C)2Cu4(NH3)3}n (2). Addition of selected phosphine and pyridine ligands transforms 2 to a range of homometallic products 3–13. All compounds have been characterized by X‐ray crystallography, which reveals a surprising variety of structural complexity featuring cores with two to ten Cu+ centers. In the solid state, products 3–13 exhibit room‐temperature phosphorescence across the visible spectrum in colors from blue to deep red. Lifetimes at room temperature are in the microsecond regime, and quantum yields of up to Φ=0.99 are observed.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Uncontrolled Keywords:General Chemistry
Language:English
Date:6 May 2019
Deposited On:31 Jul 2019 11:51
Last Modified:01 Aug 2019 07:30
Publisher:Wiley-VCH Verlag
ISSN:0947-6539
OA Status:Closed
Publisher DOI:https://doi.org/10.1002/chem.201900584

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