Výsledky vyhledávání - "S. F. Watkins"

A Tetrameric Macrocycle with 2,5-Dithio-1,3,4-thiadiazole Subunits

Autor: J. K. Rugutt, Frank R. Fronczek, S. Pappalardo, S. F. Watkins

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 53:81-84

The centrosymmetric molecule 40 (alternative name: 10,11,21,22,32,33,43,44-octaaza-5,16,27,38-tetraoxa-2,8,13,19,24,30,35,41,45,46,47,48-dodecathiapentacyclo[40.2.1.19,12,. 120,23.131,34]octatetracontane), C24H32N8O4S12, has its 40-membered ring, i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40fc76c255517ae97956accd28aa4b0d
https://doi.org/10.1107/s010827019601236x

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Structure of trans-M(CO)(C4N3)(PPh3)2.1.5C6H6 (M = Ir and Rh): the pyramidal geometry of the tricyanomethanide anion (C4N3 −)

Autor: Frank R. Fronczek, L. J. Shih, Yu Wang, Yih-Jiun Chen, Ju-Chun Wang, S. F. Watkins

Publikováno v: Acta Crystallographica Section B Structural Science. 49:680-685

The crystal structures of two tricyanomethanide (TCM) complexes have been determined. Compound (1), trans-bis(triphenylphosphine)carbonyl(2,2-di - cyanoethylideneamino)iridium(I) (the ligand 2,2-di - cyanoethylideneamino=TCM), was studied at both 298

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::523b4b4e91561cf3ed1fb0ce034309e4
https://doi.org/10.1107/s0108768193001466

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ChemInform Abstract: Structure of the Eudesmanolide Gazaniolide

Autor: S. F. Watkins, F. R. Fronczek, M. S. Jeansonne, M. A. Janusa

Publikováno v: ChemInform. 22

C 15 H 18 O 2 cristallise dans P2 1 2 1 2 1 avec a=7,129, b=11,126, c=16,112 A, Z=4; affinement jusqu'a R=0,038. Cette lactone sesquiterpene de la classe des eudesmanolides, extraite des racines de la plante Rudbeckia subtomentosa, possede un cycle 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::421c0f7cf9a714211a66efe977d977bb
https://doi.org/10.1002/chin.199114257

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ChemInform Abstract: A Tetrameric Macrocycle with 2,5-Dithio-1,3,4-thiadiazole Subunits

Autor: S. F. Watkins, Frank R. Fronczek, J. K. Rugutt, S. Pappalardo

Publikováno v: ChemInform. 28

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b691546fcc6bd25440534a065ac8d83
https://doi.org/10.1002/chin.199719055

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Trichloro(1,4,7-tri-n-butyl-1,4,7-triazacyclononane-N,N',N')chromium

Autor: S. F. Watkins, Frank R. Fronczek, F. J. Wu, G. P. Stahly

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 51:18-20

The facially coordinated macrocyclic ligand 1,4,7-tri-n-butyl- 1,4,7-triazacyclononane ( n Bu 3 tacn) plus three Cl ligands assume a distorted octahedral geometry around the Cr atom in the title compound, [CrCl 3 (C 18 H 39 N 3 )]. The average Cr-N d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ef48ef870d7455287c70356a3595e78
https://doi.org/10.1107/s0108270194006268

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Structure of the eudesmanolide gazaniolide

Autor: M. A. Janusa, S. F. Watkins, M. S. Jeansonne, F. R. Fronczek

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 46:2474-2476

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78c10a3360b4503a0dd3ed203ae11c04
https://doi.org/10.1107/s0108270190005923

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Crystal and molecular structure of di-µ-chloro-[dichlorobis(trimethylarsine)]platinum(II); a quantitative assessment of the trans-influence of the trimethylarsine ligand

Autor: S. F. Watkins

Publikováno v: J. Chem. Soc. A. :168-172

Crystals of Pt2Cl4(AsMe3)2 are monoclinic, space group P21/n, a= 10·39, b= 11·84, c= 6·74 A, β= 94·33°. The dimeric molecule consists of two square-planar platinum moieties sharing an edge, with the platinum atoms bridged unsymmetrically by two

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e79b069d8f6c87f4984e7a92bd15b8ba
https://doi.org/10.1039/j19700000168

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Crystal structure of and metallic bonding in an organotin–ruthenium carbonyl cluster complex, di-µ-dimethylstannylene-bis[tricarbonyl(trimethylstannyl)ruthenium]

Autor: S. F. Watkins

Publikováno v: J. Chem. Soc. A. :1552-1559

The solid-state molecular structure of [Me3Sn(CO)3RuSnMe2]2 has been determined by three-dimensional single-crystal X-ray diffraction analysis. The crystals are monoclinic, P21/c, a= 11·22, b= 9·22, c= 14·39 A, β= 105·3°. Distortion of the dime

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::da23f2de8bdaa70e1f8544d30a7aef99
https://doi.org/10.1039/j19690001552

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Crystal structure of di-µ-(dimethylsilylene)-bis[tricarbonyl(trimethyl-silyl)ruthenium(III)] and a re-evaluation of the metal–metal interaction in tri-µ-chloro-diruthenium complexes

Autor: M. M. Crozat, S. F. Watkins

Publikováno v: J. Chem. Soc., Dalton Trans.. :2512-2515

The molecular structure of the title compound has been determined by single-crystal X-ray diffraction analysis from diffractometer data. The structure was solved by Patterson and Fourier methods and refined by least squares to R 0·060 for 658 indepe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c851ff9b29d142ea77a8e226958f3d16
https://doi.org/10.1039/dt9720002512

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p-(3,3-Dimethyl-1-triazeno)benzonitrile

Autor: F. R. Fronczek, S. F. Watkins, Corwin Hansch

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 44:1651-1653

C 9 H 10 N 4 cristallise dans P2 1 /c avec affinement jusqu'a 0,037. Le groupement triazeno fait un angle de 10,9° avec le plan contenant le noyau benzenique. Le noyau benzenique tend a prendre une conformation bateau deforme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71eafb128ce1b77364d2e9f2ac7fb855
https://doi.org/10.1107/s010827018800647x

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