Unusual bonding mechanisms in Beryllium clusters

铍簇中不寻常的键合机制

• 批准号: 0956442
• 负责人: Michael Heaven
• 金额: $ 40.95万
• 依托单位: Emory University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0956442&HistoricalAwards=false
• 关键词: Unusual; bonding; mechanisms; Beryllium; clusters

In this award, funded by the Chemical Structure, Dynamics and Mechanisms Program of the Chemistry Division, Prof. Michael C. Heaven of Emory University and his research group will investigate unusual bonding mechanisms in (1) beryllium clusters containing 3 - 30 Be atoms, and (2) the interactions between beryllium oxide (BeO) and rare gas atoms (helium, neon and argon). The ultimate aim of these studies is to develop a better understanding of the unusual modes of bonding that are not well-characterized in terms of conventional models, and to advance our understanding of bonding when clusters grow from a few atoms in size to large systems that approach bulk metal behavior. The BeO rare gas studies will address intriguing theoretical results that predict unusually strong bonds involving normally inert rare gas elements. A variety of experimental tools will be employed, including photodetachment spectroscopy, laser-induced fluorescence, resonance-enhanced multiphoton ionization, and cavity ring-down spectroscopy.The results from these studies will help chemists to develop a deeper understanding of bonding that encompasses the traditional models of bonding as well as the unusual interactions that are one of the themes of the present study. The research will provide the graduate and undergraduate students, and post-doctoral associates involved with a rich experience in advanced experimental and theoretical methods. A collaboration will be established with Spelman College, to expand the research experience to students from a historically Black women's college.

在这个奖项，由化学部的化学结构，动力学和机制计划资助，迈克尔C。埃默里大学的Heaven和他的研究小组将研究（1）含有3 - 30个Be原子的铍团簇中不寻常的键合机制，以及（2）氧化铍（BeO）与稀有气体原子（氦、氖和氩）之间的相互作用。这些研究的最终目的是更好地了解不寻常的模式键合，没有很好地表征在传统的模型，并推进我们的理解键合时，从几个原子大小的集群增长到大型系统，接近散装金属行为。BeO稀有气体研究将解决有趣的理论结果，预测异常强的债券涉及通常惰性稀有气体元素。本研究将采用光剥离光谱、激光诱导荧光、共振增强多光子电离和光腔衰荡光谱等多种实验手段，这些研究结果将有助于化学家对键合有更深入的理解，包括传统的键合模型以及本研究的主题之一的不寻常的相互作用。这项研究将为研究生和本科生以及博士后研究员提供先进的实验和理论方法的丰富经验。 将与斯佩尔曼学院建立合作，将研究经验扩大到来自历史悠久的黑人女子学院的学生。