Ligandenstabilisierung durch Komplexbildung: P.P′.P″ -Triaminocyclotriphosphazan und adamantananaloges Tetraphosphorhexaimid / Stabilisation of Ligands by Complex Formation: P,P′,P″ -Triaminocyclotriphosphazane and an Adamantane-Analogous Tetraphosphorus Hexaimide

Abstract

<jats:title>Abstract</jats:title><jats:p> The thermal decomposition of (CO)<jats:sub>5</jats:sub>MP(NH<jats:sub>2</jats:sub>)<jats:sub>3</jats:sub> (M = Cr, Mo, W) has been studied. No definite products were obtained for M = W but the molybdenum complex yielded [(CO)<jats:sub>5</jats:sub>MoP]<jats:sub>4</jats:sub>(NH)<jats:sub>6</jats:sub>. The same type of complex results with M = Cr, in addition to [(CO)<jats:sub>5</jats:sub>CrP(NH)NH<jats:sub>2</jats:sub>]<jats:sub>3</jats:sub>. The pentacarbonylchromium groups may be removed from the adamantane type [(CO)<jats:sub>5</jats:sub>CrP]<jats:sub>4</jats:sub>(NH)<jats:sub>6</jats:sub> with sulfur. The new compound S<jats:sub>4</jats:sub>P<jats:sub>4</jats:sub>(NH)<jats:sub>6</jats:sub> results in this reaction. This compound is also a by-product in the thermal decomposition of SP(NH<jats:sub>2</jats:sub>)<jats:sub>3</jats:sub>. Attempts to prepare P<jats:sub>4</jats:sub>(NH)<jats:sub>6</jats:sub> by desulfurisation from S<jats:sub>4</jats:sub>P<jats:sub>4</jats:sub>(NH)<jats:sub>6</jats:sub> or from the chromium complex failed.</jats:p>