Ein zweikerniger Bis-N,S-Platin(II)-Komplex mit einem indigoiden 1,3,5,7-Tetraazafulvalen-4,8-dithion

Metal Complexes of Dyes. XI. A Dinuclear Bis N,S Platinum(II) Complex with an Indigoid 1,3,5,7-Tetraazafulvalene-4,8-dithione The dianion of 2,6-bis(diethylamino)-3,4,7,8-tetrahydro-1,3,5,7-tetraazafulvalene-4,8-dithione ( 1 -2 H⁺) reacts with the chloro-bridged platinum(II)-complex [(Et₃P)PtCl₂]₂ to give a dark green (N,S)-bischelate (Et₃P)(Cl)Pt( 1 -2 H⁺)Pt(Cl)(PEt₃) ( 2 ). Spectroscopic data and a ¹H-/¹H-2D-COSY-NMR-spectra are discussed. Chelation leads to a bathochromic shift of about 200 nm.     

Übergangsmetall—carbin-komplexe: LXXV. Synthese neuer halogenverbrückter zweikerniger carbinkomplexe von chrom und wolfram

Irradiation of hexacarbonyl chromium in dichloromethane at low temperature yields an intensely yellow solution, in which the presence of “Cr(CO)₅(CH₂Cl₂)” is supposed. After addition of carbyne complexes of chromium or tungsten to these solutions the new halogen-bridged dinuclear carbyne complexes (I–V) can be isolated. They are readily cleaved, even by weak donors, to form the corresponding carbyne complex and the pentacarbonyl derivative of the donor.     

Synthesen und Kristallstrukturen neuer sulfidoverbrückter Rutheniumclusterverbindungen

Syntheses and Crystal Structures of New Sulfido‐bridged Ruthenium Clusters The reaction of S(SiMe₃)₂ or NaSH with [RuCl₂(PPh₃)₃] or [Ru₃Cl₈(PEt₃)₄] leads to the formation of sulfidobridged ruthenium clusters. In this publication the compounds [Ru₆S₈(PPh₃)₆][PF₆] ( 1 ), [Ru₆S₈(PPh₃)₆][RuCl₄(PPh₃)₂] ( 2 ), [Ru₆S₈(PEt₃)₆] ( 3 ) and [Ru₃S₄Cl₂(PPh₃)₃]₂ ( 4 ) are described. The structures of these compounds were elucidated by single crystal X‐ray structural analyses.     

Ein neuer Alkoholometer (Liquometer)

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