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. Author manuscript; available in PMC: 2018 Jun 6.
Published in final edited form as: Angew Chem Int Ed Engl. 2017 May 10;56(24):6921–6926. doi: 10.1002/anie.201703244

Table 1.

Catalytic dinitrogen reduction to ammonia with synthetic Fe complexes.[a]

graphic file with name nihms878161u2.jpg
Variation HBArF4
(equiv)		 KC8
(equiv)		 Mean ± SD
(equiv NH3)
1 300 360 7.5 ± 0.8
2[b] overnight 300 360 8.7 ± 0.7
3 Hg Lamp 300 360 18.1 ± 0.8
4[b] P2P′Ph, no Fe 150 180 < 0.1
5[b] P2P′Ph, no Fe, Hg lamp 150 180 < 0.1
6[b] 2-MeTHF instead of Et2O 300 360 0.5 ± 0.3
7 3000 3600 24.5 ± 1.2
8 Hg Lamp 3000 3600 66.7 ± 4.4
9[b] 5 instead of 3 150 180 2.6 ± 0.1
10[b] 5 instead of 3, Hg lamp 150 180 8.9 ± 0.9
11 P3BFe(N2)− instead of 3 1500 1800 60.0 ± 3.7
12 P3BFe(N2)− instead of 3, Hg lamp 1500 1800 88.1 ± 8.0
[a]

All entries are an average of 3 runs unless otherwise noted.

[b]

Average of 2 runs. Note: Ammonia yields are reported per complex.