Synthesis and Molecular Structure of the First Neutral Transition-Metal Complex Containing a Linear MCCCCCR2 chain

Autor:	Raimund W. Lass, Paul Steinert, Justin Wolf, Helmut Werner
Rok vydání:	1996
Předmět:	Stereochemistry Ligand Organic Chemistry General Chemistry Catalysis chemistry.chemical_compound Crystallography Molecular geometry chemistry Transition metal Pyridine Molecule Triethylamine Derivative (chemistry) Coordination geometry
Zdroj:	Chemistry - A European Journal. 2:19-23
ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.19960020107
Popis:	The reaction of [IrH2Cl(PiPr3)2] (2) with the pentadiyne derivative HCCCCCPh2OH (1) yields the five-coordinate compound [IrH(CCCCPh2OH)Cl(PiPr3)2] (3), which photochemically rearranges to give the vinylidene-substituted isomer trans-[IrCl(CCH-CCPh2OH)(PiPr3)2] (4). On treatment of 3 with pyridine, the octahedral complex [IrH (CCCCPh2OH)Cl(py)(PiPr3)2] (5) is formed. While attempts to eliminate water from 4 (or 5) failed, the reaction of 3 with one equivalent of trifluorosulfonic acid anhydride and two equivalents of triethylamine led to the formation of trans-[IrCl(CCCCCPh2)(PiPr3)2] (6), which is the first neutral transition-metal complex containing a C5R2 ligand. The X-ray structural analysis of 6 reveals a perfect square-planar coordination geometry around the metal centre and an almost linear IrC5 chain with Ir-CC and CCC bond angles of 174–179°.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6a7d3fcb229d7e75f25ab35974d3fc1 https://doi.org/10.1002/chem.19960020107 Zobrazit plný text záznamu Plný text