Edwards Peter H, Bairan Espano Jeremy R, Macdonald Janet E
Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States.
Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States.
Chem Mater. 2024 Jul 31;36(15):7186-7196. doi: 10.1021/acs.chemmater.4c00911. eCollection 2024 Aug 13.
A library of substituted thioureas was used as sulfur reagents in the synthesis of cobalt sulfides. The substitution pattern of the thioureas controls the decomposition rate of precursors into sulfur monomers and thereby aids in the exploration of decomposition kinetics on cobalt sulfide-phase formation, including phase-pure jaipurite (CoS), cobalt pentlandite (CoS), linnaeite (CoS), and cattierite (CoS). We hypothesize that the available transformation pathways between phases during synthesis are dictated by the approximate ccp or hcp stacking of the sulfur lattice. Through gaining a complex understanding of the cobalt sulfide crystal system, phase-pure syntheses of all four naturally occurring crystalline structures in the cobalt sulfide system were achieved.
一个取代硫脲库被用作硫化钴合成中的硫试剂。硫脲的取代模式控制前体分解为硫单体的速率，从而有助于探索硫化钴相形成过程中的分解动力学，包括纯相的贾普尔矿（CoS）、钴镍黄铁矿（CoS）、硫钴矿（CoS）和硫铜钴矿（CoS）。我们假设合成过程中各相之间可用的转变途径由硫晶格近似的立方密堆积或六方密堆积决定。通过深入了解硫化钴晶体系统，实现了硫化钴系统中所有四种天然存在的晶体结构的纯相合成。
