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Structure of Amorphous Selenium by 2D 77Se NMR Spectroscopy: An End to the Dilemma of Chain versus Ring
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-07-17 06:55:29 , DOI: 10.1002/anie.201704323 Maxwell Marple 1 , Jackson Badger 2 , Ivan Hung 3 , Zhehong Gan 3 , Kirill Kovnir 2 , Sabyasachi Sen 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-07-17 06:55:29 , DOI: 10.1002/anie.201704323 Maxwell Marple 1 , Jackson Badger 2 , Ivan Hung 3 , Zhehong Gan 3 , Kirill Kovnir 2 , Sabyasachi Sen 1
Affiliation
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Amorphous selenium, owing to its tremendous technological importance and perhaps to its chemical simplicity, has been studied for nearly a century and yet an unequivocal structural description of this material remains lacking to date. The primary controversy regarding the structure of amorphous Se relates to the relative fraction of Se atoms residing in 
chains versus in Se8 rings. Herein we present the results of a two-dimensional solid-state 77Se nuclear magnetic resonance (NMR) spectroscopic study of the chain and ring crystalline allotropes of Se as well as of amorphous Se to unequivocally demonstrate that 1) the Se8 rings and the 
chains are characterized by their unique 77Se NMR signatures and 2) the structure of amorphous Se consists exclusively of 
chains.
中文翻译：
2D 77Se NMR光谱分析非晶态硒的结构：链对环困境的终结
非晶硒由于其巨大的技术重要性，也许还因为其化学简单性，已被研究了近一个世纪，但至今仍缺乏对该材料的明确结构描述。关于非晶态Se结构的主要争议涉及相
对于Se 8环存在于链中的Se原子的相对分数。在此，我们介绍了二维Se以及无定形Se的链状和环状同素异形体的二维固态77 Se核磁共振（NMR）光谱研究，以明确表明1）Se 8环和
链的特点是其独特的77Se NMR特征和2）无定形Se的结构仅由
链组成。
更新日期：2017-07-17
chains versus in Se8 rings. Herein we present the results of a two-dimensional solid-state 77Se nuclear magnetic resonance (NMR) spectroscopic study of the chain and ring crystalline allotropes of Se as well as of amorphous Se to unequivocally demonstrate that 1) the Se8 rings and the
chains are characterized by their unique 77Se NMR signatures and 2) the structure of amorphous Se consists exclusively of
chains.
中文翻译：
2D 77Se NMR光谱分析非晶态硒的结构：链对环困境的终结
非晶硒由于其巨大的技术重要性，也许还因为其化学简单性，已被研究了近一个世纪，但至今仍缺乏对该材料的明确结构描述。关于非晶态Se结构的主要争议涉及相
对于Se 8环存在于链中的Se原子的相对分数。在此，我们介绍了二维Se以及无定形Se的链状和环状同素异形体的二维固态77 Se核磁共振（NMR）光谱研究，以明确表明1）Se 8环和
链的特点是其独特的77Se NMR特征和2）无定形Se的结构仅由
链组成。
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