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G Jafari M, Fehn D, Reinholdt A, Hernández-Prieto C, Patel P, Gau MR, Carroll PJ, Krzystek J, Liu C, Ozarowski A, Telser J, Delferro M, Meyer K, Mindiola DJ. Tale of Three Molecular Nitrides: Mononuclear Vanadium (V) and (IV) Nitrides As Well As a Mixed-Valence Trivanadium Nitride Having a V 3N 4 Double-Diamond Core. J Am Chem Soc 2022; 144:10201-10219. [PMID: 35652694 DOI: 10.1021/jacs.2c00276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Transmetallation of [VCl3(THF)3] and [TlTptBu,Me] afforded [(TptBu,Me)VCl2] (1, TptBu,Me = hydro-tris(3-tert-butyl-5-methylpyrazol-1-yl)borate), which was reduced with KC8 to form a C3v symmetric VII complex, [(TptBu,Me)VCl] (2). Complex 1 has a high-spin (S = 1) ground state and displays rhombic high-frequency and -field electron paramagnetic resonance (HFEPR) spectra, while complex 2 has an S = 3/2 4A2 ground state observable by conventional EPR spectroscopy. Complex 1 reacts with NaN3 to form the VV nitride-azide complex [(TptBu,Me)V≡N(N3)] (3). A likely VIII azide intermediate en route to 3, [(TptBu,Me)VCl(N3)] (4), was isolated by reacting 1 with N3SiMe3. Complex 4 is thermally stable but reacts with NaN3 to form 3, implying a bis-azide intermediate, [(TptBu,Me)V(N3)2] (A), leading to 3. Reduction of 3 with KC8 furnishes a trinuclear and mixed-valent nitride, [{(TptBu,Me)V}2(μ4-VN4)] (5), conforming to a Robin-Day class I description. Complex 5 features a central vanadium ion supported only by bridging nitride ligands. Contrary to 1, complex 2 reacts with NaN3 to produce an azide-bridged dimer, [{(TptBu,Me)V}2(1,3-μ2-N3)2] (6), with two antiferromagnetically coupled high-spin VII ions. Complex 5 could be independently produced along with [(κ2-TptBu,Me)2V] upon photolysis of 6 in arene solvents. The putative {VIV≡N} intermediate, [(TptBu,Me)V≡N] (B), was intercepted by photolyzing 6 in a coordinating solvent, such as tetrahydrofuran (THF), yielding [(TptBu,Me)V≡N(THF)] (B-THF). In arene solvents, B-THF expels THF to afford 5 and [(κ2-TptBu,Me)2V]. A more stable adduct (B-OPPh3) was prepared by reacting B-THF with OPPh3. These adducts of B are the first neutral and mononuclear VIV nitride complexes to be isolated.
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Affiliation(s)
- Mehrafshan G Jafari
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Dominik Fehn
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Anders Reinholdt
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Cristina Hernández-Prieto
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Prajay Patel
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Michael R Gau
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J Carroll
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - J Krzystek
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| | - Cong Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Andrew Ozarowski
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| | - Joshua Telser
- Department of Biological, Physical and Health Sciences, Roosevelt University, Chicago, Illinois 60605, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Karsten Meyer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Daniel J Mindiola
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Electron-Deficient Ru(II) Complexes as Catalyst Precursors for Ethylene Hydrophenylation. INORGANICS 2022. [DOI: 10.3390/inorganics10060076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Ruthenium(II) complexes with the general formula TpRu(L)(NCMe)Ph (Tp = hydrido(trispyrazolyl)borate, L = CO, PMe3, P(OCH2)3CEt, P(pyr)3, P(OCH2)2(O)CCH3) have previously been shown to catalyze arene alkylation via Ru-mediated arene C–H activation including the conversion of benzene and ethylene to ethylbenzene. Previous studies have suggested that the catalytic performance of these TpRu(II) catalysts increases with reduced electron-density at the Ru center. Herein, three new structurally related Ru(II) complexes are synthesized, characterized, and studied for possible catalytic benzene ethylation. TpRu(NO)Ph2 exhibited low stability due to the facile elimination of biphenyl. The Ru(II) complex (TpBr3)Ru(NCMe)(P(OCH2)3CEt)Ph (TpBr3 = hydridotris(3,4,5-tribromopyrazol-1-yl)borate) showed no catalytic activity for the conversion of benzene and ethylene to ethylbenzene, likely due to the steric bulk introduced by the bromine substituents. (Ttz)Ru(NCMe)(P(OCH2)3CEt)Ph (Ttz = hydridotris(1,2,4-triazol-1-yl)borate) catalyzed approximately 150 turnover numbers (TONs) of ethylbenzene at 120 °C in the presence of Lewis acid additives. Here, we compare the activity and features of catalysis using (Ttz)Ru(NCMe)(P(OCH2)3CEt)Ph to previously reported catalysis based on TpRu(L)(NCMe)Ph catalyst precursors.
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Tatebe CJ, Matson EM, Clark CL, Kiernicki JJ, Fanwick PE, Zeller M, Bart SC. Low- and Mid-Valent Uranium Species Supported by Phenyltris(oxazolinyl)borate Ligands. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00793] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Caleb J. Tatebe
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ellen M. Matson
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christopher L. Clark
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - John J. Kiernicki
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Matthias Zeller
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Suzanne C. Bart
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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Nazemi A, Cundari TR. Computational Analysis of Proton-Coupled Electron Transfer in Hydrotris(triazolyl)borate Mid–Late 3d and 4d Transition Metal Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Azadeh Nazemi
- Department of Chemistry, Center of Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, 1155 Union Circle, #305070, Denton, Texas 76203-5017, United States
| | - Thomas R. Cundari
- Department of Chemistry, Center of Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, 1155 Union Circle, #305070, Denton, Texas 76203-5017, United States
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Campbell CJ, Muetterties AT, Chan BC, Reisner BA. New polymorphs of hydrotris(1,2,4-triazolyl)borate complexes with M2+ cations (M = Fe, Co, Ni, Zn). Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Heyer AJ, Shivokevich PJ, Hooe SL, Welch KD, Harman WD, Machan CW. Reversible modulation of the redox characteristics of acid-sensitive molybdenum and tungsten scorpionate complexes. Dalton Trans 2018; 47:6323-6332. [DOI: 10.1039/c8dt00598b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The large-scale synthesis of the scorpionate ligand Ttz (hydrotris(1,2,4-triazol-1-yl)borate) is reported, as well as syntheses of Group VI complexes K[M(L)(CO)3] and M(L)(NO)(CO)2, (M = Mo or W).
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Affiliation(s)
| | | | - Shelby L. Hooe
- Department of Chemistry
- University of Virginia
- Charlottesville
- USA
| | - Kevin D. Welch
- Department of Chemistry
- University of Virginia
- Charlottesville
- USA
| | - W. Dean Harman
- Department of Chemistry
- University of Virginia
- Charlottesville
- USA
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Siek S, Dixon NA, Papish ET. Electrochemical reduction of Ttz copper(II) complexes in the presence and absence of protons: Processes relevant to enzymatic nitrite reduction (TtzR,R′= tris(3-R, 5-R′-1, 2, 4-triazolyl)borate). Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Johnson SA, Tatebe CJ, Gonzalez S, Zeller M, Bart SC. Synthesis and characterization of hydrotris(3-phenylpyrazolyl)borate ligands on low-valent uranium. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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The hydridotris(3-nitro-1,2,4-triazol-1-yl)borate, a new nitro-substituted electron withdrawing polydentate “scorpionate”-type ligand and related copper and silver phosphane complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Bunzen H, Grzywa M, Kalytta-Mewes A, Volkmer D. One-pot synthesis of ultrastable pentanuclear alkylzinc complexes. Dalton Trans 2017; 46:2618-2625. [DOI: 10.1039/c6dt04778e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first ever reported organometallic compounds featuring a Kuratowski-type bond topology were found to be unexpectedly chemically and thermally stable.
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Affiliation(s)
- Hana Bunzen
- Chair of Solid State and Materials Chemistry
- Institute of Physics
- University of Augsburg
- D-86159 Augsburg
- Germany
| | - Maciej Grzywa
- Chair of Solid State and Materials Chemistry
- Institute of Physics
- University of Augsburg
- D-86159 Augsburg
- Germany
| | - Andreas Kalytta-Mewes
- Chair of Solid State and Materials Chemistry
- Institute of Physics
- University of Augsburg
- D-86159 Augsburg
- Germany
| | - Dirk Volkmer
- Chair of Solid State and Materials Chemistry
- Institute of Physics
- University of Augsburg
- D-86159 Augsburg
- Germany
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“Scorpionate-like” complexes that are held together by hydrogen bonds: Crystallographic and spectroscopic studies of (3-NH(t-butyl)-5-methyl-pyrazole) MX2 (M = Zn, Ni, Co, Mn; n= 3, 4; X = Cl, Br). Polyhedron 2016. [DOI: 10.1016/j.poly.2015.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Pawar GM, Sheridan JB, Jäkle F. Pyridylborates as a New Type of Robust Scorpionate Ligand: From Metal Complexes to Polymeric Materials. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501373] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gajanan M. Pawar
- Department of Chemistry; Rutgers University Newark; 73 Warren Street 07102 Newark New Jersey United States
| | - John B. Sheridan
- Department of Chemistry; Rutgers University Newark; 73 Warren Street 07102 Newark New Jersey United States
| | - Frieder Jäkle
- Department of Chemistry; Rutgers University Newark; 73 Warren Street 07102 Newark New Jersey United States
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13
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Siek S, Dixon NA, Kumar M, Kraus JS, Wells KR, Rowe BW, Kelley SP, Zeller M, Yap GPA, Papish ET. Synthesis of Biomimetic Zinc Complexes for CO2 Activation and the Influence of Steric Changes in the Ttz Ligands [Ttz = Tris(triazolyl)borate]. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500819] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sopheavy Siek
- Department of ChemistryThe University of AlabamaBox 87033635487‐0336TuscaloosaAlabamaUSA
| | - Natalie A. Dixon
- Department of ChemistryDrexel University3141 Chestnut St.19104PhiladelphiaPAUSA
| | - Mukesh Kumar
- Department of ChemistryDrexel University3141 Chestnut St.19104PhiladelphiaPAUSA
| | - Jodi S. Kraus
- Department of ChemistryDrexel University3141 Chestnut St.19104PhiladelphiaPAUSA
| | - Kirsten R. Wells
- Department of ChemistrySalisbury University1101 Camden Ave.21801SalisburyMDUSA
| | - Brittany W. Rowe
- Department of ChemistrySalisbury University1101 Camden Ave.21801SalisburyMDUSA
| | - Steven P. Kelley
- Department of ChemistryThe University of AlabamaBox 87033635487‐0336TuscaloosaAlabamaUSA
| | - Matthias Zeller
- Department of ChemistryYoungstown State UniversityOne University Plaza44555YoungstownOHUSA
| | - Glenn P. A. Yap
- Department of Chemistry and BiochemistryUniversity of Delaware102 Brown Laboratory19716NewarkDEUSA
| | - Elizabeth T. Papish
- Department of ChemistryThe University of AlabamaBox 87033635487‐0336TuscaloosaAlabamaUSA
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Kumar M, DePasquale J, White NJ, Zeller M, Papish ET. Ruthenium Complexes of Triazole-Based Scorpionate Ligands Transfer Hydrogen to Substrates under Base-Free Conditions. Organometallics 2013. [DOI: 10.1021/om301260j] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Mukesh Kumar
- Department of Chemistry, Drexel University, 3141 Chestnut Street,
Philadelphia, Pennsylvania 19104, United States
| | - Joseph DePasquale
- Department of Chemistry, Drexel University, 3141 Chestnut Street,
Philadelphia, Pennsylvania 19104, United States
| | - Nicholas J. White
- Department of Chemistry, Drexel University, 3141 Chestnut Street,
Philadelphia, Pennsylvania 19104, United States
| | - Matthias Zeller
- Department
of Chemistry, Youngstown State University, 1 University Plaza, Youngstown, Ohio 44555, United States
| | - Elizabeth T. Papish
- Department of Chemistry, Drexel University, 3141 Chestnut Street,
Philadelphia, Pennsylvania 19104, United States
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15
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DePasquale J, Kumar M, Zeller M, Papish ET. Variations on an NHC Theme: Which Features Enhance Catalytic Transfer Hydrogenation with Ruthenium Complexes? Organometallics 2013. [DOI: 10.1021/om300547f] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Joseph DePasquale
- Department
of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United
States
| | - Mukesh Kumar
- Department
of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United
States
| | - Matthias Zeller
- Department of Chemistry, Youngstown University, One University Plaza, Youngstown, Ohio 44555,
United States
| | - Elizabeth T. Papish
- Department
of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United
States
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16
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Zhao F, Zhang G, Dong H, Ji W, Zhou L, Li H, Hu H, Liu Y, Kang Z. Transition metal-directed assembly of diverse coordination polymers based on multifunctional ligand 2,4-dichloro-5-sulfamoylbenzoic acid. CrystEngComm 2013. [DOI: 10.1039/c3ce41331d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Dixon NA, McQuarters AB, Kraus JS, Soffer JB, Lehnert N, Schweitzer-Stenner R, Papish ET. Dramatic tuning of ligand donor properties in (Ttz)CuCO through remote binding of H+ (Ttz = hydrotris(triazolyl)borate). Chem Commun (Camb) 2013; 49:5571-3. [DOI: 10.1039/c3cc00036b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Kumar M, Dixon NA, Merkle AC, Zeller M, Lehnert N, Papish ET. Hydrotris(triazolyl)borate complexes as functional models for Cu nitrite reductase: the electronic influence of distal nitrogens. Inorg Chem 2012; 51:7004-6. [PMID: 22671968 DOI: 10.1021/ic300160c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrotris(triazolyl)borate (Ttz) ligands form CuNO(x) (x = 2, 3) complexes for structural and functional models of copper nitrite reductase. These complexes have distinct properties relative to complexes of hydrotris(pyrazolyl)borate (Tp) and neutral tridentate N-donor ligands. The electron paramagnetic resonance spectra of five-coordinate copper complexes show rare nitrogen superhyperfine couplings with the Ttz ligand, indicating strong σ donation. The copper(I) nitrite complex [PPN](+)[(Ttz(tBu,Me))Cu(I)NO(2)](-) has been synthesized and characterized and allows for the stoichiometric reduction of NO(2)(-) to NO with H(+) addition. Anionic Cu(I) nitrite complexes are unusual and are stabilized here for the first time because Ttz is a good π acceptor.
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Affiliation(s)
- Mukesh Kumar
- Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States
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Oseback SN, Shim SW, Kumar M, Greer SM, Gardner SR, Lemar KM, DeGregory PR, Papish ET, Tierney DL, Zeller M, Yap GPA. Crowded bis ligand complexes of TtzPh,Me with first row transition metals rearrange due to ligand field effects: structural and electronic characterization (TtzPh,Me = tris(3-phenyl-5-methyl-1,2,4-triazolyl)borate). Dalton Trans 2012; 41:2774-87. [DOI: 10.1039/c2dt12029a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Shannon N Oseback
- Departments of Chemistry, Drexel University, Philadelphia, PA 19104, USA
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