Dinitrogen complexation and reduction at low-valent calcium

doi:10.1126/science.abf2374

GSTDTAP > 气候变化

DOI	10.1126/science.abf2374
	Dinitrogen complexation and reduction at low-valent calcium
	B. Rösch; T. X. Gentner; J. Langer; C. Färber; J. Eyselein; L. Zhao; C. Ding; G. Frenking; S. Harder
	2021-03-12
发表期刊	Science
出版年	2021
英文摘要	Although lithium reduces dinitrogen, the other alkali and alkaline Earth metals have proven largely inert to the gas under ambient conditions. Rösch et al. report that with just the right β-diketiminate ligand and an assist from potassium as terminal reductant, calcium can mediate dinitrogen reduction. Crystallography and spectroscopic characterization revealed a product in which doubly reduced dinitrogen adopted a side-on bridging motif between two calcium centers. A subsequent reaction with coordinated tetrahydrofuran appeared to release diazene. Science , this issue p. [1125][1] Here we report that attempted preparation of low-valent CaI complexes in the form of LCa-CaL (where L is a bulky β-diketiminate ligand) under dinitrogen (N2) atmosphere led to isolation of LCa(N2)CaL, which was characterized crystallographically. The N22ˉ anion in this complex reacted in most cases as a very potent two-electron donor. Therefore, LCa(N2)CaL acts as a synthon for the low-valent CaI complex LCa-CaL, which was the target of our studies. The N22ˉ anion could also be protonated to diazene (N2H2) that disproportionated to hydrazine and N2. The role of Ca d orbitals for N2 activation is discussed. [1]: /lookup/doi/10.1126/science.abf2374
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/318689
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	B. Rösch,T. X. Gentner,J. Langer,et al. Dinitrogen complexation and reduction at low-valent calcium[J]. Science,2021.
APA	B. Rösch.,T. X. Gentner.,J. Langer.,C. Färber.,J. Eyselein.,...&S. Harder.(2021).Dinitrogen complexation and reduction at low-valent calcium.Science.
MLA	B. Rösch,et al."Dinitrogen complexation and reduction at low-valent calcium".Science (2021).