Discovery, Development, and Characterization of Metal-rich Niobium and Tungsten Halide Compounds

富金属铌和卤化钨化合物的发现、开发和表征

• 批准号: 461070232
• 负责人: Professor Dr. Hans-Jürgen Meyer
• 金额: --
• 依托单位: Abteilung für Festkörperchemie und theoretische Anorganische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/461070232?language=en
• 关键词: Discovery; Development; Characterization; Metal; rich

The exploration of metal-rich compounds via thermal scanning, combined with X-ray analyses is a very powerful and systematic approach for the discovery of new systems. The objective of this research is to develop new metal-rich phases containing halides and non-metal heteroatoms (Q), such as chalcogenides (O, S, Se, Te) and pnictides (P, N, As). The employment of heteroatoms is expected to lead to the formation of metal-rich compounds with new cluster types (see W6PBr17), or cluster compounds with lower dimensionality (one-dimensional Nb6I9s) or two-dimensional materials (like WTe2I). M-X and M-Q systems with M = Nb and W are expected to pass though several reaction stages when being reacted with Q and X2 (X2 = Br2, I2) to form new M-Q-X compounds (see W6PBr17 and (WTe2I), as will be investigated by thermal scanning. Intermediate phases of metal-halide-Q systems are identified and structurally characterized. These compounds can in fact serve as precursors to yield new binary compounds (Nb4S3). New compounds are structurally characterized and studied by physical properties measurements and theoretical calculations.

通过热扫描结合X射线分析探索富金属化合物是发现新系统的非常强大和系统的方法。本研究的目的是开发新的富金属相含有卤化物和非金属杂原子（Q），如硫族化合物（O，S，Se，Te）和磷族化合物（P，N，As）。杂原子的使用预计会导致形成具有新簇类型的富金属化合物（参见W 6PBr 17），或具有较低维度的簇化合物（一维Nb 6 I9）或二维材料（如WTe 2 I）。M = Nb和W的M-X和M-Q系统在与Q和X2（X2 = Br 2，I2）反应形成新的M-Q-X化合物（参见W 6PBr 17和（WTe 2 I），这将通过热扫描进行研究）时，预计将经过几个反应阶段。金属卤化物-Q系统的中间相的识别和结构特征。这些化合物实际上可以作为产生新的二元化合物（Nb 4S 3）的前体。通过物理性质测量和理论计算对新化合物进行结构表征和研究。