Journal
SCIENCE
Volume 371, Issue 6534, Pages 1125-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.abf2374
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Funding
- University of Erlangen-Nurnberg
- Nanjing Tech University [39837123, 39837132]
- National Natural Science Foundation of China [21973044]
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The attempted preparation of low-valent Ca-I complexes in the form of LCa-CaL under dinitrogen atmosphere led to the isolation of LCa(N-2)CaL, which acts as a synthon for the target LCa-CaL.The N-2(2-) anion in this complex reacted as a potent two-electron donor and could be protonated to diazene. The role of Ca d orbitals in N-2 activation is also discussed.
Here we report that attempted preparation of low-valent Ca-I complexes in the form of LCa-CaL (where L is a bulky beta-diketiminate ligand) under dinitrogen (N-2) atmosphere led to isolation of LCa(N-2)CaL, which was characterized crystallographically. The N-2(2-) anion in this complex reacted in most cases as a very potent two-electron donor. Therefore, LCa(N-2)CaL acts as a synthon for the low-valent Ca-I complex LCa-CaL, which was the target of our studies. The N-2(2-) anion could also be protonated to diazene ( N2H2) that disproportionated to hydrazine and N-2. The role of Ca d orbitals for N-2 activation is discussed.
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