The Tetracyanopyrrolide Anion as Ligand in Transition Metal Complexes1. Issue 10 (10th June 2014)

• Record Type: Journal Article
• Authors: Szafranowska, Barbara; Beck, Johannes
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 640:Issue 10(2014)
• Page Start: 1960
• Page End: 1964
• Publication Date: 2014-06-10
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201400199
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Two isotypic mononuclear discrete complexes [Co(MeCN)₄(tcp)₂]<bold>·</bold>2MeCN (<bold>1</bold>) and [Ni(MeCN)₄(tcp)₂]<bold>·</bold>2MeCN (<bold>2</bold>) containing the tetracyanopyrrolide anion [C₄(CN)₄N]^– (tcp) were synthesized from [Me₄N]tcp and the respective metal perchlorates in acetone/acetonitrile. Tcp coordinates to the transition metal atoms in η¹ fashion via the nitrogen atom of the pyrrole ring. No coordination via the cyano groups is observed. Both complexes show nearly ideal paramagnetic behavior according to the Curie law with magnetic moments of 4.98 μ_B for <bold>1</bold> and 3.09 μ_B for <bold>2</bold>. In the presence of Cu²⁺ ions tcp reacts with traces of water under hydrolysis of one cyano group to tricyanopyrrole‐2‐carboxamide (NC₄(CN)₃C(O)NH₂)^– (tcpc). From solutions in DMF the complex [Cu(tcpc)₂(DMF)₂] (<bold>3</bold>) is isolated.</p> </abstract>