112. Burns KT, Marks WR, Cheung PM, Seda T, Zakharov LN, Gilbertson JD (2018) Uncoupled
redox-inactive Lewis acids in the secondary coordination sphere entice ligand-based nitrite
reduction. Inorg Chem 57(16):9601–9610. https://doi.org/10.1021/acs.inorgchem.8b00032
113. Cheung PM, Burns KT, Kwon YM, Deshaye MY, Aguayo KJ, Oswald VF, Seda T, Zakharov
LN, Kowalczyk T, Gilbertson JD (2018) Hemilabile proton relays and redox activity lead to
{FeNO}x and significant rate enhancements in NO2- reduction. J Am Chem Soc 140
(49):17040–17050. https://doi.org/10.1021/jacs.8b08520
114. Moore CM, Szymczak NK (2013) 6,6
0 -Dihydroxy terpyridine: a proton-responsive bifunctional ligand and its application in catalytic transfer hydrogenation of ketones. Chem Commun
49(4):400–402. https://doi.org/10.1039/C2CC36927C
115. Moore CM, Bark B, Szymczak NK (2016) Simple ligand modifications with pendent OH
groups dramatically impact the activity and selectivity of ruthenium catalysts for transfer
hydrogenation: the importance of alkali metals. ACS Catal 6(3):1981–1990. https://doi.org/10.
1021/acscatal.6b00229
116. Gade LH (2000) Highly polar metal–metal bonds in “early–late” heterodimetallic complexes.
Angew Chem Int Ed 39(15):2658–2678. https://doi.org/10.1002/1521-3773(20000804)
39:15<2658::AID-ANIE2658>3.0.CO;2-C
117. Huang D, Holm RH (2010) Reactions of the terminal NiII-OH group in substitution and
electrophilic reactions with carbon dioxide and other substrates: structural definition of
binding modes in an intramolecular NiIIÁÁÁFeII bridged site. J Am Chem Soc 132
(13):4693–4701. https://doi.org/10.1021/ja1003125
118. Zhang X, Huang D, Chen Y-S, Holm RH (2012) Synthesis of binucleating macrocycles and
their nickel(II) hydroxo- and cyano-bridged complexes with divalent ions: anatomical variation of ligand features. Inorg Chem 51(20):11017–11029. https://doi.org/10.1021/ic301506x
119. Dobbek H, Svetlitchnyi V, Gremer L, Huber R, Meyer O (2001) Crystal structure of a carbon
monoxide dehydrogenase reveals a [Ni-4Fe-5S] cluster. Science 293(5533):1281–1285.
https://doi.org/10.1126/science.1061500
120. Can M, Armstrong FA, Ragsdale SW (2014) Structure, function, and mechanism of the nickel
metalloenzymes, CO dehydrogenase, and acetyl-CoA synthase. Chem Rev 114
(8):4149–4174. https://doi.org/10.1021/cr400461p
121. Halvagar MR, Tolman WB (2013) Isolation of a 2-Hydroxytetrahydrofuran complex from
copper-promoted hydroxylation of THF. Inorg Chem 52(15):8306–8308. https://doi.org/10.
1021/ic401446s
122. Haack P, Limberg C (2014) Molecular CuII-O-CuII complexes: still waters run deep. Angew
Chem Int Ed 53(17):4282–4293. https://doi.org/10.1002/anie.201309505
123. Halvagar MR, Neisen B, Tolman WB (2013) Copper-, palladium-, and platinum-containing
complexes of an asymmetric dinucleating ligand. Inorg Chem 52(2):793–799. https://doi.org/
10.1021/ic301914u
134
A. Singh et al.
redox-inactive Lewis acids in the secondary coordination sphere entice ligand-based nitrite
reduction. Inorg Chem 57(16):9601–9610. https://doi.org/10.1021/acs.inorgchem.8b00032
113. Cheung PM, Burns KT, Kwon YM, Deshaye MY, Aguayo KJ, Oswald VF, Seda T, Zakharov
LN, Kowalczyk T, Gilbertson JD (2018) Hemilabile proton relays and redox activity lead to
{FeNO}x and significant rate enhancements in NO2- reduction. J Am Chem Soc 140
(49):17040–17050. https://doi.org/10.1021/jacs.8b08520
114. Moore CM, Szymczak NK (2013) 6,6
0 -Dihydroxy terpyridine: a proton-responsive bifunctional ligand and its application in catalytic transfer hydrogenation of ketones. Chem Commun
49(4):400–402. https://doi.org/10.1039/C2CC36927C
115. Moore CM, Bark B, Szymczak NK (2016) Simple ligand modifications with pendent OH
groups dramatically impact the activity and selectivity of ruthenium catalysts for transfer
hydrogenation: the importance of alkali metals. ACS Catal 6(3):1981–1990. https://doi.org/10.
1021/acscatal.6b00229
116. Gade LH (2000) Highly polar metal–metal bonds in “early–late” heterodimetallic complexes.
Angew Chem Int Ed 39(15):2658–2678. https://doi.org/10.1002/1521-3773(20000804)
39:15<2658::AID-ANIE2658>3.0.CO;2-C
117. Huang D, Holm RH (2010) Reactions of the terminal NiII-OH group in substitution and
electrophilic reactions with carbon dioxide and other substrates: structural definition of
binding modes in an intramolecular NiIIÁÁÁFeII bridged site. J Am Chem Soc 132
(13):4693–4701. https://doi.org/10.1021/ja1003125
118. Zhang X, Huang D, Chen Y-S, Holm RH (2012) Synthesis of binucleating macrocycles and
their nickel(II) hydroxo- and cyano-bridged complexes with divalent ions: anatomical variation of ligand features. Inorg Chem 51(20):11017–11029. https://doi.org/10.1021/ic301506x
119. Dobbek H, Svetlitchnyi V, Gremer L, Huber R, Meyer O (2001) Crystal structure of a carbon
monoxide dehydrogenase reveals a [Ni-4Fe-5S] cluster. Science 293(5533):1281–1285.
https://doi.org/10.1126/science.1061500
120. Can M, Armstrong FA, Ragsdale SW (2014) Structure, function, and mechanism of the nickel
metalloenzymes, CO dehydrogenase, and acetyl-CoA synthase. Chem Rev 114
(8):4149–4174. https://doi.org/10.1021/cr400461p
121. Halvagar MR, Tolman WB (2013) Isolation of a 2-Hydroxytetrahydrofuran complex from
copper-promoted hydroxylation of THF. Inorg Chem 52(15):8306–8308. https://doi.org/10.
1021/ic401446s
122. Haack P, Limberg C (2014) Molecular CuII-O-CuII complexes: still waters run deep. Angew
Chem Int Ed 53(17):4282–4293. https://doi.org/10.1002/anie.201309505
123. Halvagar MR, Neisen B, Tolman WB (2013) Copper-, palladium-, and platinum-containing
complexes of an asymmetric dinucleating ligand. Inorg Chem 52(2):793–799. https://doi.org/
10.1021/ic301914u
134
A. Singh et al.
