79. De-Botton S, Romm R, Bensoussan G, Hitrik M, Musa S, Gelman D (2016) Coordination
versatility of p-hydroquinone-functionalized dibenzobarrelene-based PC(sp3)P pincer ligands.
Dalton Trans 45(40):16040–16046. https://doi.org/10.1039/C6DT02201D
80. De-Botton S, Cohen S, Gelman D (2018) Iridium PC(sp3)P pincer complexes with Hemilabile
pendant arms: synthesis, characterization, and catalytic activity. Organometallics 37
(8):1324–1330. https://doi.org/10.1021/acs.organomet.8b00105
81. Musa S, Shpruhman A, Gelman D (2012) New PC(sp
3
)P pincer complexes of platinum and
palladium. J Organomet Chem 699:92–95. https://doi.org/10.1016/j.jorganchem.2011.11.007
82. Musa S, Ghosh A, Vaccaro L, Ackermann L, Gelman D (2015) Efficient E-selective transfer
semihydrogenation of alkynes by means of ligand-metal cooperating ruthenium catalyst. Adv
Synth Catal 357(10):2351–2357. https://doi.org/10.1002/adsc.201500372
83. Musa S, Fronton S, Vaccaro L, Gelman D (2013) Bifunctional ruthenium(II) PCP pincer
complexes and their catalytic activity in acceptorless dehydrogenative reactions. Organometallics 32(10):3069–3073. https://doi.org/10.1021/om400285r
84. Musa S, Filippov OA, Belkova NV, Shubina ES, Silantyev GA, Ackermann L, Gelman D
(2013) Ligand-metal cooperating PC(sp
3
)P pincer complexes as catalysts in olefin
hydroformylation. Chem Eur J 19(50):16906–16909. https://doi.org/10.1002/chem.
201303311
85. Musa S, Ackermann L, Gelman D (2013) Dehydrogenative cross-coupling of primary and
secondary alcohols. Adv Synth Catal 355(14–15):3077–3080. https://doi.org/10.1002/adsc.
201300656
86. Bertini F, Glatz M, Stoger B, Peruzzini M, Veiros LF, Kirchner K, Gonsalvi L (2019) Carbon
dioxide reduction to methanol catalyzed by Mn(I) PNP pincer complexes under mild reaction
conditions. ACS Catal 9(1):632–639. https://doi.org/10.1021/acscatal.8b04106
87. Bernskoetter WH, Hazari N (2017) Reversible hydrogenation of carbon dioxide to formic acid
and methanol: Lewis acid enhancement of base metal catalysts. Acc Chem Res 50
(4):1049–1058. https://doi.org/10.1021/acs.accounts.7b00039
88. Celaje JJA, Lu Z, Kedzie EA, Terrile NJ, Lo JN, Williams TJ (2016) A prolific catalyst for
dehydrogenation of neat formic acid. Nat Commun 7:11308. https://doi.org/10.1038/
ncomms11308
89. Boddien A, Mellmann D, Gaertner F, Jackstell R, Junge H, Dyson PJ, Laurenczy G,
Ludwig R, Beller M (2011) Efficient dehydrogenation of formic acid using an Iron catalyst.
Science 333(6050):1733–1736. https://doi.org/10.1126/science.1206613
90. Fukuzumi S, Yamada Y, Suenobu T, Ohkubo K, Kotani H (2011) Catalytic mechanisms of
hydrogen evolution with homogeneous and heterogeneous catalysts. Energy Environ Sci 4
(8):2754–2766. https://doi.org/10.1039/c1ee01551f
91. Luo Q, Beller M, Jiao H (2013) Formic acid dehydrogenation on surfaces - a review of
computational aspects. J Theor Comput Chem 12(7):1330001/1330001–1330001/1330028.
https://doi.org/10.1142/s0219633613300012
92. Yang X (2013) Mechanistic insights into iron catalyzed dehydrogenation of formic acid:
β-hydride elimination vs. direct hydride transfer. Dalton Trans 42:11987–11991. https://doi.
org/10.1039/c3dt50908g
93. Jongbloed LS, de Bruin B, Reek JNH, Lutz M, van der Vlugt JI (2016) Reversible
cyclometalation at RhI as a motif for metal-ligand bifunctional bond activation and base-free
formic acid dehydrogenation. Cat Sci Technol 6(5):1320–1327. https://doi.org/10.1039/
C5CY01505G
94. Tutusaus O, Ni C, Szymczak NK (2013) A transition metal Lewis acid/base triad system for
cooperative substrate binding. J Am Chem Soc 135(9):3403–3406. https://doi.org/10.1021/
ja400962h
95. Yoshinari A, Tazawa A, Kuwata S, Ikariya T (2012) Synthesis, structures, and Reactivities of
pincer-type ruthenium complexes bearing two proton-responsive Pyrazole arms. Chem Asian J
7(6):1417–1425. https://doi.org/10.1002/asia.201200014
132
A. Singh et al.
versatility of p-hydroquinone-functionalized dibenzobarrelene-based PC(sp3)P pincer ligands.
Dalton Trans 45(40):16040–16046. https://doi.org/10.1039/C6DT02201D
80. De-Botton S, Cohen S, Gelman D (2018) Iridium PC(sp3)P pincer complexes with Hemilabile
pendant arms: synthesis, characterization, and catalytic activity. Organometallics 37
(8):1324–1330. https://doi.org/10.1021/acs.organomet.8b00105
81. Musa S, Shpruhman A, Gelman D (2012) New PC(sp
3
)P pincer complexes of platinum and
palladium. J Organomet Chem 699:92–95. https://doi.org/10.1016/j.jorganchem.2011.11.007
82. Musa S, Ghosh A, Vaccaro L, Ackermann L, Gelman D (2015) Efficient E-selective transfer
semihydrogenation of alkynes by means of ligand-metal cooperating ruthenium catalyst. Adv
Synth Catal 357(10):2351–2357. https://doi.org/10.1002/adsc.201500372
83. Musa S, Fronton S, Vaccaro L, Gelman D (2013) Bifunctional ruthenium(II) PCP pincer
complexes and their catalytic activity in acceptorless dehydrogenative reactions. Organometallics 32(10):3069–3073. https://doi.org/10.1021/om400285r
84. Musa S, Filippov OA, Belkova NV, Shubina ES, Silantyev GA, Ackermann L, Gelman D
(2013) Ligand-metal cooperating PC(sp
3
)P pincer complexes as catalysts in olefin
hydroformylation. Chem Eur J 19(50):16906–16909. https://doi.org/10.1002/chem.
201303311
85. Musa S, Ackermann L, Gelman D (2013) Dehydrogenative cross-coupling of primary and
secondary alcohols. Adv Synth Catal 355(14–15):3077–3080. https://doi.org/10.1002/adsc.
201300656
86. Bertini F, Glatz M, Stoger B, Peruzzini M, Veiros LF, Kirchner K, Gonsalvi L (2019) Carbon
dioxide reduction to methanol catalyzed by Mn(I) PNP pincer complexes under mild reaction
conditions. ACS Catal 9(1):632–639. https://doi.org/10.1021/acscatal.8b04106
87. Bernskoetter WH, Hazari N (2017) Reversible hydrogenation of carbon dioxide to formic acid
and methanol: Lewis acid enhancement of base metal catalysts. Acc Chem Res 50
(4):1049–1058. https://doi.org/10.1021/acs.accounts.7b00039
88. Celaje JJA, Lu Z, Kedzie EA, Terrile NJ, Lo JN, Williams TJ (2016) A prolific catalyst for
dehydrogenation of neat formic acid. Nat Commun 7:11308. https://doi.org/10.1038/
ncomms11308
89. Boddien A, Mellmann D, Gaertner F, Jackstell R, Junge H, Dyson PJ, Laurenczy G,
Ludwig R, Beller M (2011) Efficient dehydrogenation of formic acid using an Iron catalyst.
Science 333(6050):1733–1736. https://doi.org/10.1126/science.1206613
90. Fukuzumi S, Yamada Y, Suenobu T, Ohkubo K, Kotani H (2011) Catalytic mechanisms of
hydrogen evolution with homogeneous and heterogeneous catalysts. Energy Environ Sci 4
(8):2754–2766. https://doi.org/10.1039/c1ee01551f
91. Luo Q, Beller M, Jiao H (2013) Formic acid dehydrogenation on surfaces - a review of
computational aspects. J Theor Comput Chem 12(7):1330001/1330001–1330001/1330028.
https://doi.org/10.1142/s0219633613300012
92. Yang X (2013) Mechanistic insights into iron catalyzed dehydrogenation of formic acid:
β-hydride elimination vs. direct hydride transfer. Dalton Trans 42:11987–11991. https://doi.
org/10.1039/c3dt50908g
93. Jongbloed LS, de Bruin B, Reek JNH, Lutz M, van der Vlugt JI (2016) Reversible
cyclometalation at RhI as a motif for metal-ligand bifunctional bond activation and base-free
formic acid dehydrogenation. Cat Sci Technol 6(5):1320–1327. https://doi.org/10.1039/
C5CY01505G
94. Tutusaus O, Ni C, Szymczak NK (2013) A transition metal Lewis acid/base triad system for
cooperative substrate binding. J Am Chem Soc 135(9):3403–3406. https://doi.org/10.1021/
ja400962h
95. Yoshinari A, Tazawa A, Kuwata S, Ikariya T (2012) Synthesis, structures, and Reactivities of
pincer-type ruthenium complexes bearing two proton-responsive Pyrazole arms. Chem Asian J
7(6):1417–1425. https://doi.org/10.1002/asia.201200014
132
A. Singh et al.
