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SM ISO690:2012 DARII, Mariana, NIRCA, Ecaterina, KRAVTSOV, Victor, BOUROSH, Pavlina, HAUSER, J, DECURTINS, Silvio, LIU, Shi-Xia, SULTANOVA, Olga, BACA, Svetlana. Crystalline multi-component compounds involving hexaammine cobalt(III) cations and their effects against plant patogenic bacteria. In: New trends and strategies in the chemistry of advanced materials with relevance in biological systems, technique and environmental protection, 7-8 octombrie 2021, Timișoara. Timişoara, România: Institute of Chemistry Timişoara of the Romanian Academy, 2021, Ediția a 13-a, p. 56. |
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New trends and strategies in the chemistry of advanced materials with relevance in biological systems, technique and environmental protection Ediția a 13-a, 2021 |
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Conferința "New trends and strategies in the chemistry of advanced materials with relevance in biological systems, technique and environmental protection" Timișoara, Romania, 7-8 octombrie 2021 | |||||||
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A new series of multi-component compounds containing the cation [Co(NH3)6]3+ and various N-, N,O-, and O-donor ligands has been synthesized and crystallized. The series involves [Co(NH3)6]Cl3·2(phen)·3H2O (1), [Co(NH3)6](Hbdc)(bdc)·3H2O (2), [Co(NH3)6]Cl2(Hpht)·4H2O (3), [Co(NH3)6]Cl(Hpht)2·3H2O (4) [Co(NH3)6]Cl(2,3-pdc)·H2O (5), [Co(NH3)6]11[Co(2,5-pdc)3]8Cl·84H2O (6), [Co(NH3)6][Co(3,5-pdc)2(H2O)4]Cl·3H2O (7) [Co(NH3)6]Cl(sb)·4H2O (8), and [Co(NH3)6]2(sb)3·EtOH·3H2O (9) (where phen = 1,10-phenanthroline, H2bdc = diphenyl-4,4′-dicarboxylic acid, H2pht = o-phthalic acid, H2pdc = 2,3-/ 2,5-/ 3,5-pyridinedicarboxylic acid, H2sb = 4-sulfobenzoic acid). The complexes have been characterized by elemental analysis, IR-spectroscopy, and single crystal X-ray diffraction studies. In these compounds, the [Co(NH3)6]3+ cation serves as a building block for the incorporation of various anions/molecules containing O, N or Cl atoms as donor for hydrogen bonds and promotes the formation of multi-component compounds. Note, in addition to the [Co(NH3)6]3+ cations, compounds 1–9 comprise Cl–, deprotonated phthalate, diphenyldicarboxylate, pyridinedicarboxylate and sulfonate anions or complex [Co(2,5-pdc)3]4− and [Co(3,5-pdc)2(H2O)4]2− anions as well as neutral 1,10-phenanthroline, and solvent ethanol and water molecules as constituents of crystallization. The role of hydrogen bonds in the formation of the second coordination sphere of CoIII and in the crystal packing is investigated. The structures 1–9 reveal multiple charge-assisted H-bond interactions between cations and anions and others such as H-bonds between charged…neutral and neutral…neutral components, and π-π stacking interactions (Fig. 1). The compounds 1-9 have been tested in vitro against Rhizobium (Agrobacterium) vitis, an oncogenic bacteria that causes the formation of tumors in plants. Compound 1, comprising hexaammine cobalt(III) chloride and 1,10-phenanthroline, shows the highest inhibitory potential and is thus qualified for an application against bacterial cancer in plants. Figure 1. Hydrogen-bonded layer formed between [Co(NH3)6]3+ cations (shown as pink octahedra) and sb2− anions in |
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