@article{gyenes_purrington_liu_1999, title={Friedel-Crafts reactions of fluorinated allylic compounds}, volume={64}, ISSN={["0022-3263"]}, DOI={10.1021/jo981670e}, number={4}, journal={JOURNAL OF ORGANIC CHEMISTRY}, author={Gyenes, F and Purrington, ST and Liu, YS}, year={1999}, month={Feb}, pages={1366–1368} } @article{mcelroy_purrington_bumgardner_burgess_1999, title={Lack of polymerization of fluorinated acrylates}, volume={95}, DOI={10.1016/S0022-1139(99)00019-6}, abstractNote={trans-Ethyl 3-fluoroacrylate and ethyl 2-methyl-3,3-difluoroacrylate do not undergo radical initiated polymerization. They form 1:1 adducts with α-alkoxy radicals in high yield.}, number={1-2}, journal={Journal of Fluorine Chemistry}, author={McElroy, K. T. and Purrington, S. T. and Bumgardner, C. L. and Burgess, J. P.}, year={1999}, pages={117–120} } @article{keefer_bereman_purrington_knight_boyle_1999, title={The Pt-195 NMR of L2Pt(1,2-dithiolene) complexes}, volume={38}, ISSN={["0020-1669"]}, DOI={10.1021/ic980369d}, abstractNote={The syntheses and characterizations of the novel platinum(II) mono-1,2-dithiolenes (COD)Pt(dddt) (1), (Ph3P)2Pt(dddt) (2), (COD)Pt(edt) (3), (Ph3P)2Pt(edt) (4), (bipy)Pt(edt) (5), and (Ph3P)(CO)Pt(dddt) (6) (COD = 1,5-cyclooctadiene; dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate; edt = ethylene-1,2-dithiolate, bipy = 2,2‘-bipyridyl) are reported. 195Pt NMR spectral analysis was performed on the above-mentioned compounds along with the previously reported compounds (COD)Pt(dmid) (7), (Ph3P)2Pt(dmid) (8), (Ph3P)2Pt(dmit) (9), (COD)Pt(mnt) (10), (Ph3P)2Pt(mnt) (11), (COD)Pt(dt) (12), and (Ph3P)2Pt(dt) (13) (dmid = 1,3-dithiole-2-oxo-4,5-dithiolate; dmit = 1,3-dithiole-2-thione-4,5-dithiolate; mnt = maleonitrile-1,2-dithiolate; dt = ethane-1,2-dithiolate). 195Pt NMR results show that, depending on the nature of L2 in L2Pt(1,2-dithiolene) complexes, the 1,2-dithiolene ligands behave as either π donors or acceptors toward the Pt metal center. 195Pt NMR is also sensitive to the relative electron-withdrawing ability of the substituents on the 1,2-dithiolene backbone which results in an ordering of chemical shifts into a series independent of L2. Support is also provided by electrochemistry, UV−vis spectroscopy, and 13C NMR. X-ray structural analysis results are given for 1, monoclinic, P21/a, a = 10.2420(10) Å, b = 10.7510(10) Å, c = 13.2890(20) Å, β = 102.870(10), Z = 4, and for 5, monoclinic, I2/a, a = 7.2294(2) Å, b = 11.4574(4) Å, c = 14.9103(6) Å, β = 89.380(15), Z = 4.}, number={10}, journal={INORGANIC CHEMISTRY}, author={Keefer, CE and Bereman, RD and Purrington, ST and Knight, BW and Boyle, PD}, year={1999}, month={May}, pages={2294–2302} } @article{keefer_purrington_bereman_boyle_1999, title={The first systematic synthesis of heterobimetallic dithiolene-bridged complexes. Synthesis and characterization of metal complexes of 4-(1 ',2 '-ethylenedithiolate)-1,3-dithiole-2-one and dimeric metal complexes of 1,2,3,4-butadienetetrathiolate}, volume={38}, ISSN={["0020-1669"]}, DOI={10.1021/ic990841a}, abstractNote={The 1,2-dithiolene ligands 4-(1‘,2‘-ethylenedithiolate)-1,3-dithiole-2-one (eddo2-) and 1,2,3,4-butadienetetrathiolate (bdt4-) are synthesized by the controlled single or double 1,3-dithiole-2-one ring opening of 4,4‘-bis(1,3-dithiole-2-one) (bdo) (1). The synthesis and characterization of the novel transition metal complexes (COD)Pt(eddo) (2), (diphos)Ni(eddo) (3), [Bu4N][Ni(eddo)2] (4), (COD)Pt(bdt)Pt(COD) (5), and (diphos)Ni(bdt)Pt(COD) (6) (where COD = 1,5-cyclooctadiene, diphos = 1,2-bis(diphenylphosphino)ethane) are reported. Use of eddo2- and bdt4- results in the selective systematic synthesis of transition metal monomers and dimers. In addition, the synthesis of mixed metal dimeric complexes utilizing a “transition metal 1,2-dithiolene” ligand is demonstrated. The single-crystal X-ray structural analyses of the cocrystallized (COD)Pt(eddo)·1/2bdo, monoclinic, P21/n, a = 13.0388(4) A, b = 9.2048(3) A, c = 16.2384(5) A, β = 97.289(5)°, Z = 4, and [Bu4N][Ni(eddo)2], monoclinic, P21/n, a = 8.3508(2) A...}, number={23}, journal={INORGANIC CHEMISTRY}, author={Keefer, CE and Purrington, ST and Bereman, RD and Boyle, PD}, year={1999}, month={Nov}, pages={5437–5442} } @article{shofran_purrington_breidt_fleming_1998, title={Antimicrobial properties of sinigrin and its hydrolysis products}, volume={63}, DOI={10.1111/j.1365-2621.1998.tb15798.x}, abstractNote={Sinigrin, a thioglucoside of Cruciferae plants, may be enzymatically hydrolyzed to yield up to four distinct aglycones when the plants are injured or mechanically disrupted. These aglycones, allyl isothiocyanate (AITC), allyl cyanide (AC), 1-cyano-2,3-epithiopropane (CETP), and allyl thiocyanate (ATC), were tested for their minimum inhibitory concentration (MIC) in broth to 9 species of bacteria and 8 species of yeasts. Sinigrin, AC, and CETP at 1,000 ppm were not inhibitory to any of the bacteria or yeasts tested. The inhibitory activity of ATC was uncertain due to its gradual conversion to AITC. AITC had an MIC of 50 to 1,000 ppm for bacteria and 1 to 4 ppm for nonxerotolerant yeasts, and, against xerotolerant yeasts at 50 ppm, it retarded but did not prevent growth.}, number={4}, journal={Journal of Food Science}, author={Shofran, B. G. and Purrington, S. T. and Breidt, F. and Fleming, H. P.}, year={1998}, pages={621–624} } @article{liu_purrington_huang_1998, title={Formation of fluorinated heterocycles from aromatic silyl enol ethers}, volume={63}, ISSN={["0022-3263"]}, DOI={10.1021/jo971989j}, number={16}, journal={JOURNAL OF ORGANIC CHEMISTRY}, author={Liu, YS and Purrington, ST and Huang, WY}, year={1998}, month={Aug}, pages={5623–5626} } @article{keefer_purrington_bereman_1998, title={On the reported existence of ethylenetetrathiolate (C2S44-):The synthesis and characterization of 4,5-bis(acetylthio)-1,3-dithiol-2-one}, number={12}, journal={Synthesis (Stuttgart)}, author={Keefer, C. E. and Purrington, S. T. and Bereman, R. D.}, year={1998}, pages={1710–1712} } @article{purrington_thomas_1998, title={Rapid lithiation of 1,1-difluoroalkenes}, volume={90}, ISSN={["0022-1139"]}, DOI={10.1016/S0022-1139(98)00150-X}, abstractNote={The dehydrofluorination reaction of trifluoroethoxy compounds to form 1,1-difluoroalkenes requires a two-fold excess of n-butyllithium. The initially formed alkene is rapidly lithiated by the reagent. Thus, when only one equivalent of base is used 50% of the difluoroalkene results along with 50% of starting material after quenching.}, number={1}, journal={JOURNAL OF FLUORINE CHEMISTRY}, author={Purrington, ST and Thomas, HN}, year={1998}, month={Jun}, pages={47–48} } @article{liebman_purrington_1998, title={Some thoughts on hydrogen fluoride traps in fluorine bomb calorimetry}, volume={9}, ISSN={["1040-0400"]}, DOI={10.1023/A:1022479216205}, number={3}, journal={STRUCTURAL CHEMISTRY}, author={Liebman, JF and Purrington, ST}, year={1998}, month={Jun}, pages={237–238} } @article{keefer_purrington_bereman_knight_bedgood_boyle_1998, title={The synthesis and characterization of platinum monodithiolene complexes containing 1,3-dithiole-2-oxo-4,5-dithiolate (dmid(2-)) and 1,3-dithiole-2-thione-4,5-dithiolate (dmit(2-))}, volume={282}, ISSN={["0020-1693"]}, DOI={10.1016/S0020-1693(98)00244-8}, abstractNote={Abstract The platinum monodithiolene complexes (COD)Pt(dmid) (1), (COD)Pt(dmit) (2), (Ph3P)2Pt(dmid) (3) and (Ph3P)2Pt(dmit) (4) (where COD = 1.5-cyclooctadiene, dmid = 1,3-dithiole-2-oxo-4,5-dithiolate, dmit = 1,3-dithiole-2-thione-4,5-dithiolate) have been synthesized and characterized. We report here their 1H NMR, 195Pt NMR, UV-Vis spectra and electrochemistry. The X-ray crystal structures are also reported. 2: orthorhombic, Cmcm, a = 10.8535(6), b = 16.8503(7), c = 7.3622(3)A, Z = 4, 3: triclinic, P 1 ¯ , a = 11.2051(4), b = 11.4409(5), c = 15.2212(9)A, α = 71.882(4), β = 73.125(4), γ = 84.589(6)°, Z = 2. 4·CHCl3: triclinic, P 1 ¯ , a = 10.2521(5), b = 13.9387(14), c = 15.6884(18)A, α = 67.154(9), β = 89.380(15), γ = 83.570(13)°, Z = 2. The crystal structure of 2 exhibits a molecular stacking pattern which has alternating Pt and S(thione) atoms forming a one-dimensional chain which suggests the presence of a weak axial interaction between the Pt and S(thione). A correlation exists between the 195Pt NMR chemical shifts and the one-electron oxidation potentials of these complexes. In addition, it is shown that the carbonyl of the dmid2− ligand is not susceptible to alkoxide attack when coordinated to platinum.}, number={2}, journal={INORGANICA CHIMICA ACTA}, author={Keefer, CE and Purrington, ST and Bereman, RD and Knight, BW and Bedgood, DR and Boyle, PD}, year={1998}, month={Nov}, pages={200–208} }