@article{grant_geiser-bush_cornman_britt_1999, title={Probing the molecular geometry of five-coordinate vanadyl complexes with pulsed ENDOR}, volume={38}, ISSN={["0020-1669"]}, DOI={10.1021/ic9909173}, abstractNote={The pulsed electron paramagnetic resonance (EPR) technique of (51)V electron spin echo-electron nuclear double resonance (ESE-ENDOR) has been used to measure the nuclear quadrupole coupling constants of a series of five-coordinate vanadyl complexes containing Schiff base ligands with geometries ranging from distorted square pyramidal to distorted trigonal bipyramidal. Vanadium nuclear quadrupole coupling constants are sensitive to the coordination geometry of the vanadyl ion, and thus sensitive to the structural distortions within this series of complexes. (51)V ESE-ENDOR has been shown to be a probe of the coordination geometry of vanadyl complexes. Such a spectroscopic probe should prove useful in the investigation of vanadyl of unknown coordination geometry, such as may be found in the interaction of the vanadyl ion with biomolecules.}, number={26}, journal={INORGANIC CHEMISTRY}, author={Grant, CV and Geiser-Bush, KM and Cornman, CR and Britt, RD}, year={1999}, month={Dec}, pages={6285–6288} }
 @article{cornman_zovinka_boyajian_olmstead_noll_1999, title={Synthesis, structure and EPR spectroscopy of a vanadium(IV)-amide metallacyclic complex}, volume={285}, ISSN={["0020-1693"]}, DOI={10.1016/S0020-1693(98)00261-8}, abstractNote={The crystal structures and EPR spectra for two dinuclear, metallacyclic VIV complexes are reported. The coordinating ligands include a rare example of vanadium(IV) coordinated to the carbonyl oxygen of an amide moiety. In the solid state, the cavity of these complexes encircles two molecules of methylene chloride which interact only weakly with the metallacycle. EPR spectra are typical of mononuclear VIV ion indicating that the spins are not interacting. Crystal data: for 1, C21H20Cl8N4O3V, M = 710.95, triclinic, space group P1, a = 10.543(2), b = 11.999(3), c = 13.654(2) Å, α = 64.170(14), β = 70.084(12), γ = 87.19(2)°, U = 1451.6(5) Å3, Z = 2, Dc = 1.627 g cm−3, T = 123(2) K, no. of unique reflections = 3797, no. of parameters = 355, R1 = 0.0882, wR2 = 0.1892 (all data). Crystal data for 2: C40.5H45Cl13N8O6V, M = 71302.63, triclinic, space group P1, a = 11.933(5), b = 12.020(3), c = 12.047(4) Å, α = 63.24(2), β = 65.46(3), γ = 80.06(3)°, U = 1403.4(9) Å3, Z = 2, Dc = 1.54 g cm−3, T = 130 K, no. of unique reflections = 3663, no. of parameters = 224, R1 = 0.1271, Rw = 0.1384 (F > 4.0σ(F)).}, number={1}, journal={INORGANICA CHIMICA ACTA}, author={Cornman, CR and Zovinka, EP and Boyajian, YD and Olmstead, MM and Noll, BC}, year={1999}, month={Feb}, pages={134–137} }
 @article{cornman_geiser-bush_kampf_1999, title={Vanadium(V) complexes of 2,2 '-thiobis(4-methyl-6-tert-butylphenol) (H(2)mbp(2)S) and 2,2 '-sulfinylbis(4-methyl-6-tert-butylphenol) (H(2)mbp(2)SO)}, volume={38}, ISSN={["0020-1669"]}, DOI={10.1021/ic9900253}, abstractNote={The sulfide-containing ligand 2,2‘-thiobis(4-methyl-6-tert-butylphenol), H2mbp2S, coordinates facially to vanadium forming six-coordinate alkoxide- (1) or hydroxide-bridged (2) dimers that have been structurally characterized. 51V NMR indicates that structural isomers are present. Electrochemical studies indicate that the metal centers in 1 are strongly coupled (Kcom ≈ 105). The corresponding sulfoxide, H2mbp2SO, coordinates to vanadium(V) to form a six-coordinate complex with a 2:1 L:M stoichiometry. Under the conditions of this study, direct oxygenation of the coordinated sulfide in 1 and 2 has not been observed. Crystal data for 1 (C55H74O8S2V2):  space group R-3, a = 35.6184(2) A, b = 35.6184(2) A, c = 13.52170(10) A, α, β = 90°, γ = 120°, Z = 18. Crystal data for 2 (C26H35N2O4SV):  space group P2(1)/n, a = 13.2894(2) A, b = 12.9652(2) A, c = 16.3639(2) A, α,γ = 90°, β = 102.43°, Z = 4. Crystal data for 3 (C50H70O7S2V):  space group P-1, a = 9.1567(5) A, b = 13.9314(8) A, c = 19.7196(11) A, α = 79.146...}, number={19}, journal={INORGANIC CHEMISTRY}, author={Cornman, CR and Geiser-Bush, KM and Kampf, JW}, year={1999}, month={Sep}, pages={4303–4308} }
 @article{kadla_cornman_1998, title={An EPR investigation into the reactions of alkaline hydrogen peroxide with cyanamide}, ISSN={["0300-9580"]}, DOI={10.1039/a801251b}, abstractNote={Free-radical involvement in an alkaline hydrogen peroxide/cyanamide system has been demonstrated using electron paramagnetic resonance (EPR) spectroscopy. A stable free radical is formed which shows coupling to two pairs of equivalent 14N nuclei (a14N1 = 7.30, a14N2 = 2.13 G). Both hydroxyl and carbon-centered radicals have been trapped with 5,5-dimethyl-4,5-dihydro-3H-pyrrole N-oxide (DMPO) (DMPO–OH: aH = aN = 14.9 G, DMPO–C: aH = 24.0, aN = 16.4 G). The presence of HOO˙ has been inferred based on the absence of reactivity in the presence of superoxide dismutase. Involvement of superoxide and cyanamide radicals has been demonstrated by the formation of ring-opened and cyanamide coupled products obtained from reactions of alkaline hydrogen peroxide–cyanamide with substituted aromatic compounds.}, number={10}, journal={JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2}, author={Kadla, JF and Cornman, CR}, year={1998}, month={Oct}, pages={2309–2313} }
 @article{cornman_jantzi_wirgau_stauffer_kampf_boyle_1998, title={Coordination chemistry of a tripodal S2ON ligand: Syntheses, structures, and reactivity of the molybdenum(VI) and nickel(II) complexes of bis(2-mercaptoethyl)-2-amino-4-methylphenol (H(3)btap) and comparison to (VO)-O-v(btap)}, volume={37}, ISSN={["0020-1669"]}, DOI={10.1021/ic9802956}, abstractNote={The tripodal tetradentate ligand H3btap coordinates to VV, MoVI, and NiII via three different bonding modes to yield three complexes with unique ligand-based oxidation chemistry. For VV and MoVI (1), all four of the heteroatom donors are coordinated to the metal ion forming a trigonal bipyramidal complex with the oxovanadium(V) ion, VVO3+, and an octahedral complex with the cis-dioxomolybdenum(VI) ion, [MoO2]2+. Only three of the heteroatom donors of H3btap are used to coordinate to NiII (2), two thiolate sulfurs and the amine nitrogen, yielding a dimeric structure in which each nickel(II) ion has NS3 coordination. The ability of VVO(btap) to form η2-sulfenates, while [MoO2(btap)]- does not form stable η2-sulfenates, has been ascribed to the electron-deficient, π-accepting nature of VVO3+ relative to [MoVIO2]2+. Crystal data for 1 (C11H16NO4S2KMo):  space group Pbcn, a = 6.6596(9) A, b = 13.7446(9) A, c = 32.992(2) A, α = β = γ = 90°, Z = 8. Crystal data for 2 (C24H38N2O4S4Ni):  space group Pbcn, a = 12.0...}, number={22}, journal={INORGANIC CHEMISTRY}, author={Cornman, CR and Jantzi, KL and Wirgau, JI and Stauffer, TC and Kampf, JW and Boyle, PD}, year={1998}, month={Nov}, pages={5851–5855} }
 @article{cornman_stauffer_boyle_1997, title={Oxidation of a vanadium(V)-dithiolate complex to a vanadium(V)-eta(2),eta(2)-disulfenate complex}, volume={119}, ISSN={["0002-7863"]}, DOI={10.1021/ja971007s}, abstractNote={ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTOxidation of a Vanadium(V)−Dithiolate Complex to a Vanadium(V)−η2,η2-Disulfenate ComplexCharles R. Cornman, Thad C. Stauffer, and Paul D. BoyleView Author Information Department of Chemistry North Carolina State University Raleigh, North Carolina 27695-8204 Cite this: J. Am. Chem. Soc. 1997, 119, 25, 5986–5987Publication Date (Web):June 25, 1997Publication History Received31 March 1997Published online25 June 1997Published inissue 1 June 1997https://doi.org/10.1021/ja971007sCopyright © 1997 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views271Altmetric-Citations30LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit Read OnlinePDF (106 KB) Get e-AlertsSupporting Info (2)»Supporting Information Supporting Information SUBJECTS:Group theory,Ligands,Oxidation,Peptides and proteins,Thiolates Get e-Alerts}, number={25}, journal={JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, author={Cornman, CR and Stauffer, TC and Boyle, PD}, year={1997}, month={Jun}, pages={5986–5987} }
 @article{cornman_geiser-bush_rowley_boyle_1997, title={Structural and electron paramagnetic resonance studies of the square pyramidal to trigonal bipyramidal distortion of vanadyl complexes containing sterically crowded Schiff base ligands}, volume={36}, ISSN={["0020-1669"]}, DOI={10.1021/ic970868z}, abstractNote={[N,N‘-Ethylenebis(o-(tert-butyl-p-methylsalicylaldiminato)]oxovanadium(IV) (1), [N,N‘-propanediylbis(o-(tert-butyl-p-methylsalicylaldiminato)]oxovanadium(IV) (2), bis(N-methylsalicylaldiminato)oxovanadium(IV) (3), bis(N-isopropyl-o-methylsalicylaldiminato)oxovanadium(IV) (4), and, bis(N-methyl-o-(tert-butyl-p-methylsalicylaldiminato)oxovanadium(IV) (5) were prepared and characterized by X-ray crystallography and EPR spectroscopy. Complexes 1 and 2 are best described as square pyramids, while complexes 3−5 are distorted trigonal bipyramids, demonstrating that oxovanadium(IV) complexes can readily adopt a trigonal bipyramidal geometry. All five compounds give nearly the same parallel hyperfine coupling constant (Az) regardless of the fact that the geometry about the vanadium changes from square pyramidal to trigonal bipyramidal. Crystal data for 1:  space group P1, a = 7.9382(3) A, b = 12.6749(7) A, c = 13.8353(7) A, α = 109.608(5)°, β = 96.552(5)°, γ = 96.589(5)°, Z = 2. Crystal data for 2:  space group I...}, number={27}, journal={INORGANIC CHEMISTRY}, author={Cornman, CR and Geiser-Bush, KM and Rowley, SP and Boyle, PD}, year={1997}, month={Dec}, pages={6401–6408} }