1975
DOI: 10.1002/zaac.19754110109
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Über Arsen‐haltige Heterocyclen. II. Molekül‐ und Kristallstruktur von 5‐Chlor‐1‐oxa‐4,6‐dithia‐5‐arsaocan

Abstract: Die Struktur der Titelsubstanz wurde röntgenographisch aus Diffraktometer‐Einkristalldaten bestimmt und bis zu einem konventionellen R von 0,048 verfeinert. Der 8‐Ring besitzt Wanne‐Sessel‐Konformation. PITZER‐ und BAEYER‐Spannung sind gegenüber Cyclooctan verringert, und an die Stelle der transannularen 1, 5‐H…︁H‐Abstoßung im Cyclooctan ist eine stabilisierende 1, 5‐As…︁O‐Anziehung getreten. Die Koordination am As‐Atom ist ψ‐trigonal‐bipyramidal mit axialen Abständen AsCl 2,27 Å, AsO 2,45 Å und äquatorialen… Show more

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Cited by 26 publications
(3 citation statements)
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“…In all complexes 1 , 2 and 3 the As–S distances are in good agreement with the covalent radii sum [Σ r cov (As,S) = 2.22 Å]7 and with those reported in other heterocycles with arsenic–sulfur bonds 8–19. The As–Hal distances (Hal = Cl, Br, I) are 5–7 % longer than the corresponding covalentradii sum [(Σ r cov (As,Cl) = 2.19 Å; Σ r cov (As,Br) = 2.34 Å;Σ r cov (As,I) = 2.53 Å]5 and are similar to otherdistances in several heterocycles containing As–Hal bonds.…”
Section: Resultssupporting
confidence: 84%
“…In all complexes 1 , 2 and 3 the As–S distances are in good agreement with the covalent radii sum [Σ r cov (As,S) = 2.22 Å]7 and with those reported in other heterocycles with arsenic–sulfur bonds 8–19. The As–Hal distances (Hal = Cl, Br, I) are 5–7 % longer than the corresponding covalentradii sum [(Σ r cov (As,Cl) = 2.19 Å; Σ r cov (As,Br) = 2.34 Å;Σ r cov (As,I) = 2.53 Å]5 and are similar to otherdistances in several heterocycles containing As–Hal bonds.…”
Section: Resultssupporting
confidence: 84%
“…Then, to simplify the citation process, all of the 77 structures were classified into 48 groups and each group was related to a scientific paper (Table S1). …”
Section: Resultsmentioning
confidence: 99%
“…Interacting pairs of structure 1 (As­(III), As···Cl), structure 2 (As­(III), As···Cl), structure 3 (As­(III), As···S); structure 4 (As­(III), As···S), and structure 5 (As­(V), As···O) . Color code: purple, As; green, Cl; gray, C; white, H; yellow, S; red, O.…”
Section: Resultsmentioning
confidence: 99%