Chemie polyfunktioneller Liganden, 53 [1] Über methyl-substituierte Triarsa-trioxa-, Triarsa-trithiaund Triarsa-triaza-adamantane und über den stark aufgeweiteten Adamantan-Käfig im Schwefel-Derivat / Chemistry of Polyfunctional Ligands, 53 [1] About Methyl-substituted Triarsa-trioxa-, Triarsa-trith

  title={Chemie polyfunktioneller Liganden, 53 [1] {\"U}ber methyl-substituierte Triarsa-trioxa-, Triarsa-trithiaund Triarsa-triaza-adamantane und {\"u}ber den stark aufgeweiteten Adamantan-K{\"a}fig im Schwefel-Derivat / Chemistry of Polyfunctional Ligands, 53 [1] About Methyl-substituted Triarsa-trioxa-, Triarsa-trith},
  author={Jochen Ellermann and Martin Lietz and Peter Merbach and Gerhard Thiele and Gerd Zoubek},
  journal={Zeitschrift f{\"u}r Naturforschung B},
  pages={975 - 982}
Abstract The reaction of l,l,l-tris(diiodarsinomethyl)ethane, CH3C(CH2Asl2)3 (1), with H2O, H2S and CH3NH2 in THF gives the adamantane cage compounds CH3C(CH2ASO)3 (4), CH3C(CH2ASS)3 (5) and CH3C(CH2ASNCH3)3 (6) in high yields. The crystal structure of 5 has been determinated by X-ray diffraction. The unit cell (space group P2i/w) contains 4 isolated molecules in a cubic closest packing. The heteroadamantane 5 has an enlarged cage structure with extremely spread C-C(H2)-As bond angles of 124… Expand
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Chemie Polyfunktioneller Molekülle: XCIX. Hydrolyse und oxidative Hydrolyse von Tetrakis[(diiodarsino) methyl]methan. Kristallstrukturanalyse eines Organoarsenoxid-Arsonigsäure-Derivats
Abstract Hydrolysis of C(CH2AsI2)4 (V) gives the combined arsonous acid-organoarsenic oxide compound (HO)2AsCH2C(CH2AsO)3 (VIa). Boiling VIa with D2O results in the formation of (DO)2AsCH2C(CH2AsO)3Expand
Chemie polyfunktioneller liganden : LXVIII. Chrom-, molybdän- und wolframcarbonyl-komplexe des 7-methyl-1,3,5-triarsa-2,4,9-trioxa-adamantans
Abstract The adamantane-structured compound CH 3 C(CH 2 AsO) 3 (III) reacts on ultra-violet irradiation with the hexacarbonyls of chromium, molybdenum and tungsten to give the complexes CH 3 C(CH 2Expand
Chemie polyfunktioneller Moleküle, 78. Noradamantane mit den Heteroelementen Arsen, Sauerstoff, Schwefel und Selen
Durch Reduktion des Hetero-adamantans CH3C(CH2AsO)3 (1a) mit alkalischer Hypophosphitlosung erhalt man das Hetero-noradamantan CH3C(CH2As)3O2 (2a) neben CH3C(CH2As)3 (3). Die homologen NoradamantaneExpand
Chemie polyfunktioneller Moleküle, 88. (Chlormethyl)tris[(diiodarsino)methyl]methan und seine Verwendung zur Synthese offenkettiger, bi- und tricyclischer Organo-Arsen-Verbindungen
Tetrakis(chlormethyl)methan, C(CH2Cl)4 reagiert mit NaAs(C6H5)2(Molverhaltnis 1:4) in flussigem Ammoniak lediglich zum tritertiaren Arsan ClCH2C[CH2As(C6H5)2]3 (1). Dieses setzt sich mit gasformigemExpand
Synthesis and structure of 6‐exo‐hydroxy‐1,2‐diphenyl‐1‐phosphoniatricyclo []decane iodide, a derivative of 1‐phosphaadamantane
The annelation reaction between l,2,3,6-tetrahydro-1-phenyl-4-(1-pyrrolidinyl)phosphorin 1-oxide (10) and 2,2-bis(chloromethyl)acetophenone (7) leads to two stereoisomericExpand
Resolution and improved synthesis of (±)-arsenicin A: A natural adamantane-type tetraarsenical possessing strong anti-acute promelocytic leukemia cell line activity
The resolution and improved synthesis of the naturally occurring, adamantane-type, tetraarsenical (±)-Arsenicin A is reported. The five-step synthesis of (±)-Arsenicin A fromExpand
Chemie polyfunktioneller moleküle
Abstract The reaction of 5-diphenylphosphine-uracil with M(CO) 5 thf (M = Cr, Mo, W; thf = tetrahydrofuran) yields the novel 5-diphenylphosphine-uracil-pentacarbonylmetal(O) complexes. In each caseExpand
Density functional calculations of molecular structures of arsenic-binding β-domain of metallothioneins-2
Abstract Arsenic is part of the most serious hazards whose detoxification in organisms is mainly performed by its binding to some metalloproteins such as metallothioneins (MTs). It is of greatExpand
Bioactive poly(arsenic) compounds.
An overview of the biological activities of arsenic compounds containing more than one arsenic atom in their molecular structure is presented. This contribution covers the literature of the lastExpand