Linear, mixed-valent homocatenated tri-tin complexes featuring Sn-Sn bonds

Wei-Chieh Chang; Ankit Raj; Hirotsugu Hiramatsu; Han-Jung Li; Micah S Ziegler; Yichen Lin; Shengcih Huang; Hsueh-Ju Liu

doi:10.1039/d0cc02699a

Linear, mixed-valent homocatenated tri-tin complexes featuring Sn-Sn bonds

Chem Commun (Camb). 2020 Jun 23;56(50):6786-6789. doi: 10.1039/d0cc02699a.

Authors

Wei-Chieh Chang¹, Ankit Raj², Hirotsugu Hiramatsu³, Han-Jung Li⁴, Micah S Ziegler⁵, Yichen Lin¹, Shengcih Huang¹, Hsueh-Ju Liu¹

Affiliations

¹ Department of Applied Chemistry, National Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City, 30010, Taiwan. [email protected].
² Department of Applied Chemistry, National Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City, 30010, Taiwan. [email protected] and Institute of Molecular Science, National Chiao Tung University, Taiwan.
³ Department of Applied Chemistry, National Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City, 30010, Taiwan. [email protected] and Institute of Molecular Science, National Chiao Tung University, Taiwan and Center for Emergent Functional Matter Science, National Chiao Tung University, Taiwan.
⁴ Material and Chemical Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4, Chung Hsing Rd., Chutung, Hsinchu, 31040, Taiwan.
⁵ Institute for Data, Systems, and Society, Massachusetts Institute of Technology Cambridge, MA 02139, USA.

PMID: 32427248
DOI: 10.1039/d0cc02699a

Abstract

A series of tri-tin complexes (LPhSn)3X with triple-decker structures (LPh = 2,5-di(o-pyridyl)-3,4-diphenylpyrrolate; X = Cl, AlCl4, OTf, and PF6) was synthesized by reducing LPhSnCl with LiBsBu3H and subsequent reactions. Structural characterization of (LPhSn)3Cl revealed a Sn-Sn-Sn core, and DFT calculations suggest that its HOMO is primarily σ-bonding along the tri-tin framework. (LPhSn)3Cl reacts with W(CO)5THF to afford (LPhSn)2(W(CO)5)2 and LPhSnCl, implying that (LPhSn)3Cl may exhibit dynamic behavior in solution.