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Updated: Jan 8, 2026
Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
Synthesis, structural characterization, and reactivity of homocatenated Ga₄ complexes with unsaturated Ga-Ga=Ga-Ga
Ning Zhang1, Bing Wang1, Yanliang Wu1
1Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Zhejiang Key Laboratory of Organosilicon Material Technology, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, Zhejiang, China.
Abstract:
The homocatenation of electron-deficient Group 13 metals to form metal-metal multiple bonds through covalent self-assembly remains extremely challenging. Herein we demonstrate the synthesis and characterizations of N-heterocyclic carbene (NHC)-stabilized digallyl digallenes (1a and 1b), which exhibit unsaturated Ga-Ga=Ga-Ga chains with trans-bent geometries. These compounds were synthesized through salt-metathesis reactions using Cp*Ga, (L1)K2/(L2)Li2, and 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (IiPr). Employing both experimental and computational techniques, our investigation reveals that the chain elongation of 1a was initiated by the in-situ generation of a gallium(I) carbene analog [(L1)GaK]. Additionally, the reactivity of compound 1a with I2, PhS-SPh, Ph3P = S, and Ph2C = O was explored, leading to the formation of tetra-gallium subhalides (4), disulfide addition product (5), a gallium thiirane analog (6), and a [2 + 2] cycloaddition product (7), respectively.
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