Zobrazeno 1 - 10 of 43 pro vyhledávání: '"Duane C. Hrncir"'
1
Redox Processes Controlling Manganese Fate and Transport in a Mountain Stream
Autor: Durelle T. Scott, Diane M. McKnight, Duane C. Hrncir, Bettina M. Voelker
Publikováno v: Environmental Science & Technology. 36:453-459
The biogeochemical processes controlling the speciation and transport of manganese in a Colorado mountain stream were studied using a conservative tracer approach combined with laboratory experiments. The study stream, Lake Fork Creek, receives manga
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cb1f1c260fcbe107cc1f77a191b1daf
https://doi.org/10.1021/es010951s
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2
Photodimerization of 1-Phenylcyclohexene. A Novel Transient−Transient Component
Autor: David J. Unett, Richard A. Caldwell, Duane C. Hrncir
Publikováno v: Journal of the American Chemical Society. 118:1682-1689
Low-temperature irradiations of 1-phenylcyclohexene (PC6) yield two singlet state 2 + 2 photodimers and two 4 + 2 cycloadducts. The 4 + 2 adducts are not observed in low intensity lamp irradiations at room temperature but are produced in significant
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94c138e69bdb0f2479812dfdcba8b2f2
https://doi.org/10.1021/ja9533860
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3
Chemistry of Cr(VI) in a constructed wetland
Autor: Duane C. Hrncir, Janice D. Makos
Publikováno v: Environmental Science & Technology. 29:2414-2419
The feasibility of the use of constructed wetlands to treat acidic wastes containing hexavalent chromium is successfully demonstrated on a laboratory scale. The chemistry of Cr(VI) in this system has been determined. Cr(VI) removal is highly dependen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::366168530163e27eedc5094bc6bcc07f
https://doi.org/10.1021/es00009a038
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4
Synthesis, Crystal Structure, and Potentiometry of Pyridine-Containing Tetraaza Macrocyclic Ligands with Acetate Pendant Arms
Autor: A. Dean Sherry, Won D. Kim, Garry E. Kiefer, Duane C. Hrncir
Publikováno v: Inorganic Chemistry. 34:2225-2232
Tetraazamacrocycles containing the pyridine moiety as part of the cyclic backbone and acetate pendant arms were prepared. The resulting products were characterized by high resolution NMR (‘H and I3C) spectroscopy and single-crystal X-ray diffractio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05288032a5718b2713ad890bffb1ae47
https://doi.org/10.1021/ic00112a040
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6
Synthesis and X-ray crystal structure of three polyazamacrocycles having sulfonate pendant groups: Piperazinyl-monomethanesulfonic acid, sodium hydrogen 1,4,7-triazacyclononane-N,N?-di(methanesulfonate) and 1,4,7,10-tetraazacyclododecane-N,N?-di(methanesulfonic acid)
Autor: Anne E. Vivian, Duane C. Hrncir, A. Dean Sherry, Won D. Kim, Jeroen van Westrenen
Publikováno v: Journal of Crystallographic and Spectroscopic Research. 23:885-890
C5H10N2O3S,1, monoclinicC2/c,a=17.545(5),b=6.822(8),c=13.928(2),β=108.36(7),Z=8, MoKα, λ=0.7107 A,μ=3.56cm−1,R=0.061,Rw=0.099. C8H16N3O6S2Na·2H2O,2, orthorhombicPna21,a=17.964(8),b=10.157(1),c=8.263(4),Z=4, MoKα, λ=0.7107 A,μ=4.07 cm−1,R=
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77b2f30ccab14a4fc4875f6a548a5cfc
https://doi.org/10.1007/bf01195736
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7
GROUP 13 AMIDES. SYNTHESES AND MOLECULAR STRUCTURES OF [(i-Bu)2Al-N(H)Mes]2,[(i-Bu)Al-N(H)Ph(t-Bu)2-μ-(CMe2CH2)]2, [Me2In-N(H)Ph′]2, AND [(i-Bu)2Al-N(H)Ada]2
Autor: Gregory H. Robinson, Baosheng Lee, Mary D. B. Dillingham, Duane C. Hrncir, Jameica B. Hill, Steven J. Schauer, William T. Pennington
Publikováno v: Journal of Coordination Chemistry. 28:337-346
The sterically demanding Group 13 amide dimers [(i-Bu)2Al-N(H)Mes]2 (I), [(i-Bu)Al-N(H)Ph(t-Bu)2-μ-(CMe2CH2)]2 (II), [Me2In-N(H)Ph′]2 (III), and [(i-Bu)2Al-N(H)Ada]2 (IV) (Ada = adamantyl; Bu=butyl; Mes = Ph(Me)3; Ph = phenyl; Ph′= 2-biphenyl) h
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1344332b0d6b40daedb948c5d451989
https://doi.org/10.1080/00958979308037115
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8
Organoaluminum-phosphine chemistry. Synthesis and molecular structure of [Ph2P(O)2 · AlCl2]2 and [Ph2P · Al(i-Bu)2]2
Autor: Duane C. Hrncir, Samuel A. Sangokoya, Gregory H. Robinson, William T. Pennington
Publikováno v: Journal of Organometallic Chemistry. 385:23-31
The crystalline complex [Ph2P(O)2 · AlCl2]2 (I) was prepared by reaction of the disproportionation product of ethylaluminum sesquichloride, EtAlCl2, or by direct reaction of EtAlCl2 with diphenylphosphonic acid, Ph2P(O)OH, in a heptane/toluene mixtu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58c6e8243e36c19fbd19bd2e89a41b3b
https://doi.org/10.1016/0022-328x(90)87143-2
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9
Alkylsilazalanes. Reaction of trimethylaluminium with silazanes: Synthesis and molecular structure of [Al(CH3)2]2[C12H32N2Si4] and [Al(CH3)2]2[C8H28N2Si4]
Autor: Jameica J. Byers, Duane C. Hrncir, William T. Pennington, Gregory H. Robinson
Publikováno v: Polyhedron. 9:2205-2210
The crystalline product [Al(CH3)2]2[C12H32N2Si4] (I), obtained from reaction of 2,2,5,5-tetramethyl-2,5-disila-1-azacyclopentane with trimethylaluminium in a heptane-chlorobenzene mixture, crystallizes in the orthorhombic space group Pbca (No. 61) wi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab4dc06c0dd483887aab33c6a313f454
https://doi.org/10.1016/s0277-5387(00)86943-0
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10
Seasonal varability of metals transport through a wetland impacted by mine drainage in the Rocky Mountains
Autor: Kimberly S. Garhart, Diane M. McKnight, Duane C. Hrncir, Eric E. August
Publikováno v: Environmental sciencetechnology. 36(17)
An annual study of a natural wetland receiving drainage with high concentrations of iron, zinc, and manganese from an abandoned mine tunnel was conducted. During summer, the wetland reduced the mass flow from the tunnel to a receiving stream by more
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f0da499d0510aeec85b1df82789bda1
https://pubmed.ncbi.nlm.nih.gov/12322751
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