首页|Synthesis,chemical bonding and reactivity of new medium-sized polyarsenides

Synthesis,chemical bonding and reactivity of new medium-sized polyarsenides

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Gaining an understanding of the growth mechanism from single atoms to clusters and bulk materials continues to present a challenge.Thus,it is important to explore the evolving trends of clusters in the structure and properties during the size evolution.In this work,we report the synthesis and charac-terization of two medium-sized chain-like polyarsenic anions.[As21]3-represents a trimeric example of polyarsenic anion assembled through oxidative coupling of As73-anions.The anion As184-included in[As18Mo2(CO)8]4-is regarded as formed by two realgar-type As8 subunits connected by a dinuclear As-As dumbbell.The As18 cluster was previously predicted by theory,and this is the first time successfully synthesized using wet chemistry method.Besides,small-sized polyarsenides As22-and As102-were found in compound[K(18-crown-6)]3[As10]0.5[As4{Mo(CO)3}2]0.5·2en.Among these,the former exhibits coordi-nation with metal atoms.Single-crystal X-ray diffraction combined with quantum chemical calculations revealed the formation of double bonded As22-stabilized by metal carbonyl groups.This work demon-strates a novel synthetic approach for the preparation of new polyarsenides and highlights their intriguing bonding characteristics,laying the foundation for the synthesis of such compounds and paving the way for their potential applications.

PolyarsenideZintl anionsChain-like clusterDFT calculationsAdNDP

Xu-Hui Yue、Xiang-Wen Zhang、Hui-Min He、Lei Qiao、Zhong-Ming Sun

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State Key Laboratory of Element-Organic Chemistry,Tianjin Key Lab for Institution Rare Earth Materials and Applications,School of Materials Science and Engineering,Nankai University,Tianjin 300350,China

Department of Physics,Institute of Computational and Applied Physics,Taiyuan Normal University,Jinzhong 030619,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Tianjin CityNatural Science Foundation of Tianjin CityFundamental Research Program of Shanxi ProvinceTaiyuan Normal University College Students Science and Technology Innovation Project

921611022197111820JCYBJC0156021JCZXJC00140202203021222248CXCY2278

2024

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子:0.771
ISSN:1001-8417
年,卷(期):2024.35(7)