Výsledky vyhledávání - "Joan A. Deiters"

ANIONIC FIVE-COORDINATED CYCLIC ORGANOFLUOROSILICATES VARYING IN RING SIZE FROM FIVE- TO SEVEN-MEMBERED

Autor: Stephen E. Johnson, Lori Howe, Joan A. Deiters, Joan M. Holmes, Roberta O. Day, Channareddy. Sreelatha, Robert R. Holmes

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 100:87-105

Synthesis of the potassium crown ether complexes (K, 18-c-6) 3 and 4 of the anionic five-coordinated spirocyclic fluorosilicates from the precursor fluorosilanes has provided additional members of this new class of silicon compounds. Silicates 3 and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01b342123896e54331ad0a79ad15b728
https://doi.org/10.1080/10426509508037702

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ENHANCED REACTIVITY OF PENTACOORDINATED SILICON SPECIES. AN AB INITIO APPROACH

Autor: Robert R. Holmes, Joan A. Deiters

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 100:51-65

Molecular orbital calculations using GAUSSIAN 86 on tetracoordinated silicon species SiH n F4-n are compared with calculations on the anionic species formed by the addition of fluoride ion [SiH n F5-n ]. Similar calculations on isoelectronic tetra- a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d249a2f4ae899990720b1132acad550
https://doi.org/10.1080/10426509508037700

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NOVEL HYDROLYSIS PATHWAYS OF DIMESITYLDIFLUOROSILANE VIA AN ANIONIC FIVE-COORDINATED SILICATE AND A HYDROGEN-BONDED BISILONATE. MODEL INTERMEDIATES IN THE SOL-GEL PROCESS

Autor: Joan A. Deiters, Roberta O. Day, Stephen E. Johnson, Robert R. Holmes

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 99:129-147

Reaction of dimesityldifluorosilane, Mes2SiF2, with Et4NF 2H2O in acetonitrile resulted in the formation of the five-coordinated complexes, [Et4N][MeS2SiF3], [Et4N][MesSiF4], the hydrogen bisilonate, [Mes2Si(F)O]2[H][Et4N] (2), and the disiloxane, (M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c623fda6a6ffa0204087cc1fed21b47b
https://doi.org/10.1080/10426509508031342

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FLUORINE AND CHLORINE APICOPHILICITIES IN FIVE-COORDINATED PHOSPHORUS AND SILICON COMPOUNDS VIA MOLECULAR ORBITAL CALCULATIONS. A MODEL FOR NUCLEOPHILIC SUBSTITUTION

Autor: Joan M. Holmes, Robert R. Holmes, Joan A. Deiters

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 99:101-124

Comparative ab initio molecular orbital calculations on pentacoordinated phosphorus and silicon model states are used to establish apicophilicities in a series of trigonal-bipyramidal molecules composed of all combinations of the ligand atoms, hydrog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf7318fbede881b6e5a810167733fd43
https://doi.org/10.1080/10426509508031340

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CRYSTAL STRUCTURES OF TWO PHENYL SPIROARSORANES. THE FIRST TRULY RECTANGULAR-PYRAMIDAL ARSENIC(V) COMPOUND

Autor: Joan A. Deiters, Arjun C. Sau, Jean R. Devillers, Roberta O. Day, Robert R. Holmes, Joan M. Holmes

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 98:287-299

Single-crystal X-ray analysis of 2-phenyl-2,2′-spirobi(1,3,2-benzodioxarsole), (C6H4O2)2AsPh (5), and 2-phenyl-2,2′(3H,3′H)-spirobi(1,3,2-benzoxazarsole), (C6H2ONH)2AsPh (6), reveals, respectively, a rectangular-pyramidal structure and a trigon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::998f803a1c1da653d0c32bf7b94ce216
https://doi.org/10.1080/10426509508036956

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COMPUTER SIMULATION OF STAPHYLOCOCCAL NUCLEASE ACTION ON THYMIDINE 3′,5′-BIS(PHOSPHATE) (pdTp)

Autor: Robert R. Holmes, Joan A. Deiters, Judtih C. Gallucci

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 98:311-333

Computer modeling based on a molecular mechanics approach was used to explore the mechanism of staphylococcal nuclease action on the thymidine 3′-phosphate 5′-(p-nitrophenyl phosphate)-calcium ion substrate complex. The active-site residues Asp-2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a12cab35f0c0975d7580eaae28fb63d7
https://doi.org/10.1080/10426509508036958

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STRUCTURAL DISTORTIONS OF CYCLIC PHOSPHORANES AND THE BERRY EXCHANGE COORDINATE. A QUANTITATIVE DESCRIPTION

Autor: Joan A. Deiters, Robert R. Holmes

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 98:105-124

Structural distortions of cyclic phosphoranes are shown to form a continuous series between the idealized trigonal bipyramidal (D 3h) and square pyramidal (C 4v) representations. The particular form of the distortions is along the Berry intramolecula

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a96e260ba399c1edb15121e2f978bc2
https://doi.org/10.1080/10426509508036945

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