Liebing P, Witzorke J, Oehler F, Schmeide M. Dithiocarbamatocarboxylate (DTCC) Ligands-Building Blocks for Hard/Soft-Heterobimetallic Coordination Polymers.
Inorg Chem 2020;
59:2825-2832. [PMID:
32045219 DOI:
10.1021/acs.inorgchem.9b03168]
[Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Four zinc/platinum(II) heterobimetallic coordination polymers with dithiocarboxylate-functionalized carboxylate (DTCC) ligands were prepared by different synthetic approaches and characterized by elemental analyses, IR and NMR (1H, 13C, and 195Pt) spectroscopy, thermal analyses coupled with mass spectrometry (TG/DTA/MS), and single-crystal and powder X-ray diffraction studies. Sequential syntheses via the carboxylic acid substituted platinum dithiocarbamates and zinc acetate revealed crystalline products in good to excellent yields. One-pot preparations from potassium DTCC salts, K2PtCl4, and ZnCl2 led to comparable products, thus demonstrating the high selectivity of the two donor groups toward platinum(II) and zinc. [SSC-N(Me)CH2COO]2- and [SSC-N(CH2COO)(CH2COOH)]2-, DTCC ligands derived from sarcosine and iminodiacetic acid, respectively, were found to form planar zigzag chains with zinc and platinum(II) ions, while the use of the l-proline-derived ligand [SSC-NC4H7COO]2- results in a helical structure. In the case of [SSC-N(CH2COO)2]3-, two-dimensional arrays are formed. All compounds are thermally stable up to 240-400 °C under nitrogen.
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