Syntheses, crystal structures, and electrochemical studies of Fe2(CO)6(μ-PPh2)(μ-L) (L = OH, OPPh2, PPh2)

Reaction of Fe 3 (CO) 12 and Ph 2 PH in the presence of Et 3 N in THF at 0 °C immediately forms Fe 2 (CO) 6 (μ-PPh 2 )(μ-OH) (1), Fe 2 (CO) 6 (μ-PPh 2 )(μ-k 2 O,P-OPPh 2 ) (2), and Fe 2 (CO) 6 (μ-PPh 2 ) 2 (3) in yields of 25, 14, and 19%, respectively. Experiments confirm that Et 3 N shortens the r...

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Bibliographic Details
Published in:Journal of coordination chemistry 2014-07, Vol.67 (13), p.2330-2343
Main Authors: Shi, Yao-Cheng, Yang, Wei, Shi, Ying, Cheng, Da-Cong
Format: Article
Language:English
Subjects:
Bridging hydroxyl group
Carbonyl ligand
Crystal structure
Crystallography
Hydrogenase
Iron-iron bond
NMR
Nuclear magnetic resonance
Reaction time
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Summary:Reaction of Fe 3 (CO) 12 and Ph 2 PH in the presence of Et 3 N in THF at 0 °C immediately forms Fe 2 (CO) 6 (μ-PPh 2 )(μ-OH) (1), Fe 2 (CO) 6 (μ-PPh 2 )(μ-k 2 O,P-OPPh 2 ) (2), and Fe 2 (CO) 6 (μ-PPh 2 ) 2 (3) in yields of 25, 14, and 19%, respectively. Experiments confirm that Et 3 N shortens the reaction time. The absence of O 2 hinders the formation of 2. The presence of H 2 O can increase the yield of 1. Their structures have been determined by X-ray crystallography and the complexes have been completely characterized by EA, IR, and 1 H, 13 C, 31 P NMR. Electrochemical studies reveal that they exhibit catalytic H 2 -producing activities.
ISSN:0095-8972
1029-0389
DOI:10.1080/00958972.2014.940925