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  • 1
    ISSN: 0044-2313
    Keywords: Silver(I) di(organosulfonyl)-amides ; silver(I)-η2-phenyl interaction ; silver-silver interaction ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polysulfonyl Amines. LVII. Two Silver(I) Di(organosulfonyl)-amides with Silver-η2-Aryl or Silver-Silver Interactions: Crystal Structures of Silver Di(benzenesulfonyl)amide-Water (1/0.5) and of Anhydrous Silver Di(4-toluenesulfonyl)-amideCrystals of [(PhSO2)2NAg(μ-H2O)AgN(SO2Ph)2]n (5) and [(4-Me—C6H4SO2)2NAgAgN(SO2C6H4-4-Me)2]n (6) were obtained from aqueous solutions. The crystallographic data are for 5 (at -95°C): monoclinic, space group C2/c, a = 2 743.8(5), b = 600.49(12), c = 1 664.5(3) pm, β = 101.143(15)°, V = 2.6908 nm3, Z = 8, Dx = 2.040 Mg m-3; for 6 (at -130°C): monoclinic, space group P21/n, a = 1 099.8(5), b = 563.7(3), c = 2 487.7(13) pm, β = 99.68(4)°, V = 1.5203 nm3, Z = 4, Dx = 1.888 Mg m-3. In both crystals, the silver atom has a fivefold coordination. The structure of 5 displays [(RSO2)2N—Ag(μ-H2O)Ag′—N(SO2R)2] units with Ag—N 226.9 pm, Ag—O 236.7 pm and Ag—O—Ag′ 95.3°; the water oxygen lies on a crystallographic twofold axis. These units are extended to two fused six-membered rings by intramolecular dative bonds (S)O → Ag′ and S(O)′ → Ag (249.3 pm). One phenyl group from each (PhSO2)2N moiety is η2-coordinated with its p-C and one m-C atom to a silver atom of a neighbouring bicyclic unit related by a glide plane to form infinite parallel strands (p-C—Ag 252.2, m-C—Ag 263.9 pm). The strands are interconnected into parallel layers through hydrogen bonds between H2O and sulfonyl oxygens [O … O(S) 276.1 pm]. These layers consist of a hydrophilic inner region containing metal ions, N(SO2)2 fragments and water molecules, and hydrophobic surfaces formed by phenyl groups. The structure of 6 features centrosymmetric [(RSO2)2N—Ag—Ag′—N(SO2R)2] units with two intramolecular dative bonds (S)O → Ag′ and (S)O′ → Ag (Ag—Ag′ 295.4, Ag—N 226.0, Ag—O 229.4 pm). These bi-pentacyclic units are associated by translation parallel to y into infinite strands by two dative (S)O → Ag bonds per silver atom (Ag—O 243.2 and 253.3 pm).
    Notes: Kristalle von [(PhSO2)2NAg(μ-H2O)AgN(SO2Ph)2]n (5) und [(4-Me—C6H4SO2)2NAgAgN(SO2C6H4-4-Me)2]n (6) wurden aus Wasser erhalten. Die kristallographischen Daten sind für 5 (bei -95°C): monoklin, Raumgruppe C2/c, a = 2 743,8(5), b = 600,49(12), c = 1 664,5(3) pm, β = 101,143(15)°, V = 2,6908 nm3, Z = 8, Dx = 2,040 Mg m-3; für 6 (bei -130°C): monoklin, Raumgruppe P21/n, a = 1 099,8(5), b = 563,7(3), c = 2 487,7(13) pm, β = 99,68(4)°, V = 1,5203 nm3, Z = 4, Dx = 1,888 Mg m-3. Das Silberatom ist in beiden Verbindungen pentakoordiniert. Die Struktur von 5 enthält Einheiten des Typs [(RSO2)2N—Ag(μ-H2O)Ag′—N(SO2R)2] mit Ag—N 226,9 pm, Ag—O 236,7 pm und Ag—O—Ag′ 95,3°; das Wasser-O-Atom liegt auf einer kristallographischen zweizähligen Achse. Durch intramolekulare dative Bindungen (S)O → Ag′ und S(O)′ → Ag (249,3 pm) entstehen zwei kondensierte Sechsringe. Ein Phenylring aus jeder (PhSO2)2N-Gruppe geht mit dem p-C- und einem m-C-Atom eine η2-Wechselwirkung mit einem Ag-Atom eines benachbarten Bicyclus ein (p-C—Ag 252,2, m-C—Ag 263,9 pm). Auf diese Weise bilden sich unendliche parallele Stränge, in welchen die obigen Repetiereinheiten über eine Gleitspiegelebene miteinander in Beziehung stehen. Die Stränge sind durch Wasserstoffbrücken zwischen H2O und Sulfonyl-O-Atomen [O … O(S) 276,1 pm] zu parallelen Schichten verknüpft. Diese besitzen einen hydrophilen inneren Bereich aus Metallkationen, N(SO2)2-Fragmenten und Wassermolekülen und hydrophobe, von Phenylgruppen gebildete Oberflächen. Die Struktur von 6 enthält zentrosymmetrische [(RSO2)2N—Ag—Ag′—N(SO2R)2]-Einheiten mit zwei intramolekularen dativen Bindungen (S)O → Ag′ und (S)O′ → Ag (Ag—Ag 295,4, Ag—N 226,0, Ag—O 229,4 pm). Diese bipentacyclischen Einheiten sind über zwei dative (S)O → Ag-Bindungen pro Silberatom (Ag—O 243,2 und 253,3 pm) zu unendlichen Strängen parallel zur y-Achse assoziiert. Innerhalb des Stranges stehen sie durch Translation miteinander in Beziehung.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 601 (1991), S. 111-119 
    ISSN: 0044-2313
    Keywords: Sulfonyl amines ; bis(dimesylamino)dimethyl silane ; bis(dimesylamino)dimethyl stannane ; preparation ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polysulfonyl Amines. XXIV. Preparation and Crystal Structures of Bis(dimesylamino)dimethyl Silane and Bis(dimesylamino)dimethyl StannaneThe new compounds (CH3)2E[N(SO2CH3)2]2 with E = Si (3), m.p. 162 °C, and E = Sn (4), m.p. 194-196 ° were prepared by metathesis of AgN(SO2CH3)2 with (CH3)2ECl2 and subjected to X-ray structure determinations. 3 crystallizes in the monoclinic space group C2/c with a = 1714.3(4), b = 679.6(2), c = 1389.9(4) pm, β = 97.50(2)° and Z = 4, 4 in the same space group with a = 2093.8(8), b = 1320.7(6), c = 1443.9(6) pm, β = 124.28(3)° and Z = 8. The crystals of both compounds consist of discrete monomeric molecules, in which the central atom E is bonded to two carbon and two nitrogen atoms in an approximately tetrahedral geometry for 3 [angles at Si in the range (105.5⃛111.9)°] and in a severely distorted tetrahedral arrangement in 4 [CSnC 128.8°; NSnN 107.8°; NSnC in the range (99.9⃛109.4)°]. Details of the molecular structures suggest that in each molecule two intramolecular E⃛O dipole-dipole interactions are stereochemically significant [Si⃛O 291.4 pm (2x); Sn⃛O 300.9 and 303.1 pm]. The molecule of 3 displays an exact, that of 4 an approximate twofold symmetry.
    Notes: Die neuen Verbindungen (CH3)2E[N(SO2CH3)2]2 mit E = Si (3), Schmp. 162 °C, und E = Sn (4), Schmp. 194-196 °C, wurden durch Metathese von AgN(SO2CH3)2 mit (CH3)2ECl2 erhalten und röntgenstrukturanalytisch charakterisiert. 3 kristallisiert in der monoklinen Raumgruppe C2/c mit a = 1714,3(4), b = 679,6(2), c = 1389,9(4) pm, β = 97,50(2)° und Z = 4, 4 in der gleichen Raumgruppe mit a = 2093,8(8), b = 1320,7(6), c = 1443,9(6) pm, β = 124,28(3)° und Z = 8. Die Kristallpackung beider Verbindungen besteht aus diskreten monomeren Molekülen, in denen das Zentralatom E an zwei Kohlenstoff- und zwei Stickstoffatome gebunden ist. 3 weist eine annähernd tetraedrische Geometrie auf [Winkel am Siim Bereich (105,5⃛111,9)°], 4 hingegen eine stark verzerrte Tetraedergeometrie [CSnC 128,8°; NSnN 107,8°; NSnC im Bereich (99,9⃛109,4)°]. Eine Betrachtung der Molekülstrukturen legt nahe, daß in beiden Fällen je zwei intramolekulare (E⃛O)-Wechselwirkungen vom Dipol-Dipol-Typ die Stereochemie beeinflussen [Si⃛O 291,4 pm (2x) Sn⃛O 300,9 und 303,1 pm]. Das Molekül von 3 besitzt eine strenge, das von 4 eine annähernde zweizählige Symmetrie.
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