Exploring the coordination chemistry of bifunctional organoarsonate ligands: Syntheses and characterisation of coordination polymers that contain 4-(1,2,4-triazol-4-yl)phenylarsonic acid
File Type:
PDFItem Type:
Journal ArticleDate:
2014Author:
Access:
openAccessCitation:
Lin, J.-D., Clérac, R., Rouzières, M., (...), Chimamkpam, T.O., Schmitt, W., Exploring the coordination chemistry of bifunctional organoarsonate ligands: Syntheses and characterisation of coordination polymers that contain 4-(1,2,4-triazol-4-yl)phenylarsonic acid, CrystEngComm, 16, 34, 2014, 7894-7905Download Item:
c4ce00553h.pdf (PDF) 6.038Mb
Abstract:
This account describes the coordination chemistry of a novel bifunctional arsonic acid ligand, 4-(1,2,4-triazol-4-yl)phenylarsonic acid (H2TPAA) that contains a triazole group. Hydrothermal reactions of transition metal salts with H2TPAA produced five unprecedented coordination polymers: [Co(H2TPAA)(HTPAA)2]·H2O (1), M(HTPAA)Cl·2H2O (M = Cu (2), Co (3)) and M(HTPAA)2 (M = Mn (4), Cd (5)). These five polymers have been fully characterized by single crystal and powder X-ray diffraction, thermogravimetric analysis, infra-red spectroscopy and elemental analysis. Single crystal X-ray diffraction reveals that 1, 2 and 3 adopt 2-D layered structural motifs whereas 4 and 5 are 3-D frameworks. 1 and 3 are the first examples of arsonate-stabilised cobalt(II) coordination polymers. Likewise, 4 is recognised as the first record of a MnII arsonate coordination polymer with 3-D framework topology. Its isostructural Cd analogue 5 shows characteristic ligand-centered fluorescence properties. Magnetic measurements of 2 and 4 reveal predominant antiferromagnetic interactions between their respective spin centers while, in agreement with its chain structure, 3 exhibits one-dimensional magnetic behavior with weak ferromagnetic interactions between the spin centres.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
Author's Homepage:
http://people.tcd.ie/venkatemDescription:
PUBLISHED
Author: VENKATESAN, MUNUSWAMY
Type of material:
Journal ArticleCollections:
Series/Report no:
CrystEngComm16
34
Availability:
Full text availableKeywords:
novel bifunctional arsonic acid ligandDOI:
http://dx.doi.org/10.1039/c4ce00553hLicences: