Assessing the Metal–Metal Interactions in a Series of Heterobimetallic Nb/M Complexes (M = Fe, Co, Ni, Cu) and Their Effect on Multielectron Redox Properties
Abstract
A one-pot synthetic procedure for a series of bimetallic Nb/M complexes, Cl–Nb(iPrNPPh2)3M–X (M = Fe (2), Ni (4), Cu (5)), is introduced. A similar procedure aimed at synthesizing a Nb/Co analogue instead affords iPrN=Nb(iPrNPPh2)2(μ-PPh2)Co–I (3) through cleavage of one phosphinoamide P–N bond under reducing conditions. Complexes 4 and 5 are found to have short Nb-M distances, corresponding to unusual metal–metal bonds between Nb and these first row transition metals. For comparison, a series of heterobimetallic O≡Nb(iPrNPPh2)3M–X complexes (M = Fe (7), Co (8), Ni (9), Cu (10)) was synthesized. In these complexes, the NbV center is engaged in sufficient π-bonding to the terminal oxo ligand to remove the driving force for direct metal–metal interactions. A comparison of the cyclic voltammograms of 2 and 4–10 shows that the presence of a second metal shifts the redox potentials of both Nb and the late metal center anodically, even when direct metal–metal interactions are not present.
- Authors:
-
[2];
[2];
[3]
- The Ohio State Univ., Columbus, OH (United States)
- Brandeis Univ., Waltham, MA (United States)
- The Ohio State Univ., Columbus, OH (United States); Brandeis Univ., Waltham, MA (United States)
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
- OSTI Identifier:
- 1524782
- Grant/Contract Number:
- SC0019179; SC0014151
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Inorganic Chemistry
- Additional Journal Information:
- Journal Volume: 58; Journal Issue: 1; Journal ID: ISSN 0020-1669
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Barden, Brett A., Culcu, Gursu, Krogman, Jeremy P., Bezpalko, Mark W., Hatzis, Gregory P., Dickie, Diane A., Foxman, Bruce M., and Thomas, Christine M. Assessing the Metal–Metal Interactions in a Series of Heterobimetallic Nb/M Complexes (M = Fe, Co, Ni, Cu) and Their Effect on Multielectron Redox Properties. United States: N. p., 2018.
Web. doi:10.1021/acs.inorgchem.8b02960.
Barden, Brett A., Culcu, Gursu, Krogman, Jeremy P., Bezpalko, Mark W., Hatzis, Gregory P., Dickie, Diane A., Foxman, Bruce M., & Thomas, Christine M. Assessing the Metal–Metal Interactions in a Series of Heterobimetallic Nb/M Complexes (M = Fe, Co, Ni, Cu) and Their Effect on Multielectron Redox Properties. United States. https://doi.org/10.1021/acs.inorgchem.8b02960
Barden, Brett A., Culcu, Gursu, Krogman, Jeremy P., Bezpalko, Mark W., Hatzis, Gregory P., Dickie, Diane A., Foxman, Bruce M., and Thomas, Christine M. Thu .
"Assessing the Metal–Metal Interactions in a Series of Heterobimetallic Nb/M Complexes (M = Fe, Co, Ni, Cu) and Their Effect on Multielectron Redox Properties". United States. https://doi.org/10.1021/acs.inorgchem.8b02960. https://www.osti.gov/servlets/purl/1524782.
@article{osti_1524782,
title = {Assessing the Metal–Metal Interactions in a Series of Heterobimetallic Nb/M Complexes (M = Fe, Co, Ni, Cu) and Their Effect on Multielectron Redox Properties},
author = {Barden, Brett A. and Culcu, Gursu and Krogman, Jeremy P. and Bezpalko, Mark W. and Hatzis, Gregory P. and Dickie, Diane A. and Foxman, Bruce M. and Thomas, Christine M.},
abstractNote = {A one-pot synthetic procedure for a series of bimetallic Nb/M complexes, Cl–Nb(iPrNPPh2)3M–X (M = Fe (2), Ni (4), Cu (5)), is introduced. A similar procedure aimed at synthesizing a Nb/Co analogue instead affords iPrN=Nb(iPrNPPh2)2(μ-PPh2)Co–I (3) through cleavage of one phosphinoamide P–N bond under reducing conditions. Complexes 4 and 5 are found to have short Nb-M distances, corresponding to unusual metal–metal bonds between Nb and these first row transition metals. For comparison, a series of heterobimetallic O≡Nb(iPrNPPh2)3M–X complexes (M = Fe (7), Co (8), Ni (9), Cu (10)) was synthesized. In these complexes, the NbV center is engaged in sufficient π-bonding to the terminal oxo ligand to remove the driving force for direct metal–metal interactions. A comparison of the cyclic voltammograms of 2 and 4–10 shows that the presence of a second metal shifts the redox potentials of both Nb and the late metal center anodically, even when direct metal–metal interactions are not present.},
doi = {10.1021/acs.inorgchem.8b02960},
journal = {Inorganic Chemistry},
number = 1,
volume = 58,
place = {United States},
year = {Thu Dec 20 00:00:00 EST 2018},
month = {Thu Dec 20 00:00:00 EST 2018}
}
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