MRI: Acquisition of a Variable-Temperature, Dual-Wavelength, Single-Crystal X-Ray Diffractometer

该奖项由主要研究仪器和化学研究仪器计划支持。来自爱荷华州大学的伦纳德·麦吉利夫雷教授和他的同事詹姆斯·格洛尔、克里斯托弗·皮格、格雷戈里·弗里斯塔和斯科特·戴利获得了一台双源单晶衍射仪。一般来说，X射线衍射仪允许准确和精确地测量分子的完整三维结构，包括键距和角度，并提供关于分子相对于相邻分子的空间排列的准确信息。这里描述的研究影响了许多领域，包括有机和无机化学，材料化学和生物化学。该仪器是该机构化学，药物化学，药学和生物化学研究生和本科生的教学，研究和研究培训的一个组成部分。它还为爱荷华州东部、伊利诺斯州西部和北方密苏里州的没有单晶X射线衍射仪的主要本科院校的教师和学生研究人员免费提供晶体学服务。该提案旨在加强各级的研究和教育。它特别影响了对分子固体中非共价键作用的研究和对模板固态反应的探索。衍射仪有助于使用非无辜配体合成的化合物的表征，以及那些具有含f-元素的软供体配体的化合物。 该仪器对于研究将地球上丰富的金属与非无辜配体偶联用于电化学二氧化碳还原是必不可少的。 该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This award is supported by the Major Research Instrumentation and the Chemistry Research Instrumentation programs. Professor Leonard MacGillivray from University of Iowa and colleagues James Gloer, Christopher Pigge, Gregory Friestad and Scott Daly have acquired a dual source single crystal diffractometer. In general, an X-ray diffractometer allows accurate and precise measurements of the full three-dimensional structure of a molecule, including bond distances and angles, and provides accurate information about the spatial arrangement of a molecule relative to neighboring molecules. The studies described here impact many areas, including organic and inorganic chemistry, materials chemistry and biochemistry. This instrument is an integral part of teaching as well as research and research training of graduate and undergraduate students in chemistry, medicinal chemistry, pharmacy and biochemistry at this institution. It also provides crystallographic services free of charge to faculty and student researchers in primarily undergraduate institutions that do not possess single-crystal X-ray diffractometers in eastern Iowa, western Illinois, and northern Missouri.The proposal is aimed at enhancing research and education at all levels. It especially impacts studies on effects of noncovalent bonding in molecular solids and exploration of templated solid-state reactions. The diffractometer aids the characterization of synthesized compounds using non-innocent ligands, and those having soft-donor ligands with f-elements. The instrument is essential for studies coupling earth-abundant metals with non-innocent ligands to be used in electrochemical carbon dioxide reduction. It is also useful in designing catalytic carbon-hydrogen activation with N-acylhydrazones and for studying reactivity and selectivity in radical polar crossover reactions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.