ChemInform Abstract: PERFLUOROMETHYL ELEMENT LIGANDS. XXI. PREPARATION AND CHARACTERIZATION OF ORGANOELEMENT‐ELEMENT COMPOUNDS OF THE TYPE RNE‐ERM (R = CH3,CF3; E = P,AS,S,SE,TE; N,M = 1,2)

Abstract

Vier verschiedene Darstellungsmethoden für die Titelverbindungen werden untersucht.

The exchange reaction of tetramethyldipnictogens with dimethyldichalcogenides

“…The proton NMR data for 8a-&I are summarized in Table 1. Data for 8b are consistent with those reported by Grobe [5]. Relative assignments may be made easily since the signals for the methyl groups attached to the pnictogen atom are twice as intense as those for the methyl groups attached to telhuium.…”

Covalently bonded compounds of heavy group 15/16 elements – Synthesis, structure and potential application in material sciences

“…[56] However, the most convenient route for such compounds including those containing sterically less demanding organic substituents, for which intermolecular interactions between adjacent molecules in the solid state are most likely, are reactions of low-valent dipentelanes R 4 M 2 (M = Sb, Bi) containing weak M-M bonds with dichalcogenanes E' 2 R 2 (E' = S, Se, Te). [8,10,18,19,20,21,22] For instance, R 2 SbER' (E = S, Se, Te; R = Me, Et, R' = Me, Ph) were obtained from reactions of Sb 2 R 4 and E 2 R' 2 at ambient temperature (Sb 2 Me 4 ) and -40 °C (Sb 2 Et 4 ), respectively. [15,16,17] R 2 SbTeMe (R = Me, Et), which decompose upon heating with formation of the corresponding trialkylstibine SbR 3 and RSb(ER') 2 , were reported to be thermochromic, indicating the presence of intermolecular contacts between the metal centers in the solid state.…”

Perfluormethyl-Element-Liganden, XXIV Organozinnverbindungen als Reagenzien, III Spaltungsreaktionen der Element-Element-Bindung in Verbindungen des Typs RnE-ERm(R = CH3, CF3·E =P, As, Se, Te · n,m = 1, 2)/Perfluormethyl Element Ligands, XXIV ; Organotin Compounds as Reagents, III Cleavage Reactions of the Element-Element-Bond in Compounds of the Type RnE-ERm (R = CH3CF3; E = P, AS, S, Se, Te; n,m=1, 2)

“…Die Identifizierung der Reaktionspartner und -produkte bereitet keine Schwierigkeiten, da die NMR-Daten der Verbindungen weitgehend bekannt sind [2,3,5,10].…”

“…Die in dieser Ar beit verwendeten OrganoelementElement-Verbindungen werden nach früher beschriebenen Methoden [5] hergestellt. Die Wasserstoffverbindungen Me3M'H (M' = Si, Ge, Sn) und MeSeH werden nach Literaturvorschriften [9][10][11] gewonnen.…”

“…Hauptgruppe des Periodensystems gegenüber einfachen Metallwasserstoffverbindungen des Typs HM'Me3 (M' = Si, Ge, Sn) [2,3] und HM(CO)5 (M = Mn, Re) [4] haben wir vor kurzem eine Reihe von Darstellungsverfahren erprobt und ca. 30 Element-Element-Verbindungen synthetisiert [5]. Die vorliegende Arbeit faßt die Ergebnisse der Spaltungsreaktionen mit den Hydriden HM'Me3 (M' = Si, Ge, Sn) sowie mit den H-aciden Partnern H20, CH3OH, HBr und HI zusammen.…”