The Role of 2, 6‐Diaminopyridine Ligands in the Isolation of an Unprecedented, Low‐Valent Tin Complex. Issue 46 (8th October 2013)

• Record Type: Journal Article
• Authors: Flock, Johanna; Suljanovic, Amra; Torvisco, Ana; Schoefberger, Wolfgang; Gerke, Birgit; Pöttgen, Rainer; Fischer, Roland C.; Flock, Michaela
• Is Part Of: Chemistry. Volume 19:Issue 46(2013)
• Page Start: 15504
• Page End: 15517
• Publication Date: 2013-10-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201301340
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Stabilization of the central atom in an oxidation state of zero through coordination of neutral ligands is a common bonding motif in transition‐metal chemistry. However, the stabilization of main‐group elements in an oxidation state of zero by neutral ligands is rare. Herein, we report that the transamination reaction of the DAMPY ligand system (DAMPY=2, 6‐[ArNH‐CH₂]₂(NC₅H₃) (Ar=C₆H₃‐2, 6‐<italic>i</italic>Pr₂)) with Sn[N(SiMe₃)₂]₂ produces the DIMPYSn complex (DIMPY=(2, 6‐[ArNCH]₂(NC₅H₃)) with the Sn atom in a formal oxidation state of zero. This is the first example of a tin compound stabilized in a formal oxidation state of zero by only one donor molecule. Furthermore, three related low‐valent Sn^II complexes, including a [DIMPYSn^IICl]⁺[SnCl₃]⁻ ion pair, a bisstannylene DAMPY{Sn^II[N(SiMe₃)₂]₂}₂, and the enamine complex MeDIMPYSn^II, were isolated. Experimental results and the conclusions drawn are also supported by theoretical studies at the density functional level of theory and ¹¹⁹Sn Mössbauer spectroscopy.</p> </abstract>