Syntheses, Crystal Structures, and Weak Interactions of Two 4-Substituted Benzyl Triphenylphosphonium Salts Containing Tetrachloromanganate(II) Anion

Abstract

Two new tetrachloromanganate(II) salts, [4FBzTPP]₂[MnCl₄] (1) and [4ClBzTPP]₂[MnCl₄]·2H₂O (2) ([4FBzTPP]⁺ = 1-(4′-fluorobenzyl)triphenylphosphonium; [4ClBzTPP]⁺ = 1-(4′-chlorobenzyl)triphenylphosphonium), have been prepared and characterized by elemental analyses, UV-Vis, IR, ESI-MS, molar conductivity and single-crystal X-ray diffraction. The single-crystal structure analysis shows that compound 1 crystallizes in the monoclinic space group P2₁/c, while 2 is triclinic P-1. Both 1 and 2 comprise one [MnCl₄]^2– anion and two cations, and the [MnCl₄]^2– anion exhibits distorted tetrahedral coordination geometry. The C‒H···Cl, C‒H···π hydrogen bonds and π···π stacking interactions in 1 and the C‒H···Cl, O‒H···Cl hydrogen bonds in 2 result in the forming of a 3D network structure in the solids.

Keywords:

• tetrachloromanganate(II) anion
• 4-substituted benzyl triphenylphosphonium
• crystal structure
• weak interactions

Supplementary Material

The detailed crystallographic data of 1 and 2 have been deposited at the Cambridge Crystallographic Data Center as supplementary publication No.CCDC-984627 and 984629. Copies of the data may be obtained free of charge from the Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK (fax: [phone]; [email protected] or www: http://www.ccdc.cam.ac.uk).

Funding

The authors thank the Science and Technology Project from Guangdong Science and Technology Department (No. 2014A010105037), the key Academic Program of the 3rd phase “211 Project” of South China Agricultural University (No. 2009B010100001), and the university students’ innovation training project from South China Agricultural University (No. 201410564212) for financial support of this work.