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Morpholine- and Thiomorpholine-based amidodithiophosphonato nickel complexes: synthesis, characterization, P–N cleavage, antibacterial activity and silica nano-dispersion

Morpholine- and Thiomorpholine-based amidodithiophosphonato nickel complexes: synthesis, characterization, P–N cleavage, antibacterial activity and silica nano-dispersion
Morpholine- and Thiomorpholine-based amidodithiophosphonato nickel complexes: synthesis, characterization, P–N cleavage, antibacterial activity and silica nano-dispersion
The reactivity of thiomorpholinium P-(4-methoxyphenyl)-N-thiomorpholin-amidodithiophosphonate (S-MorH+ 2)(S-Mor-adtp−) and morpholinium P-(4-methoxyphenyl)-N-morpholin-amidodithiophosphonate (O-MorH+ 2)(O-Mor-adtp−) towards nickel (II) dichloride hexahydrated is presented and the hydrolysis of the relevant metal complexes investigated. The hydrolytic products (S-MorH+ 2)2 [Ni(dtp)2]2− and (O-MorH+ 2)2[Ni(dtp)2]2− were characterized by means of FT-IR, 1H, and 31P NMR and XRD and the experimented P–N cleavage investigated and elucidated by means of DFT calculations. The antimicrobial activity of the neutral nickel complex [Ni(S-Mor-adtp)2] was tested against a set of Gram-positive and Gram-negative bacteria alongside with its nanodispersion in a silica matrix. The complex [Ni(S-Mor-adtp)2] did not show antibacterial activity, whilst the nano-dispersed sample [Ni(S-Mor-adtp)2]_SiO2 demonstrated inhibition to growth of Staphylococcus aureus. The nanocomposites were fully characterized by means of XRPD, TGA, SEM and dinitrogen sorption techniques.
Amidodithiophosphonato, Antibacterial Activity, DFT Calculations, Nano-Dispersion, Nickel complexes, P–N cleavage
1533-4880
Podda, Enrico
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Aragoni, M. Carla
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Arca, Massimiliano
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Atzeni, Giulia
e8e92233-1f16-4584-a3cd-504037724b08
Coles, Simon J.
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Ennas, Guido
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Isaia, Francesco
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Lippolis, Vito
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Orrù, Germano
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Scano, Alessandra
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Orton, James
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Pintus, Anna
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Scano, Alessandra
012f0811-9886-4fc6-a474-edc25b047c8b
Podda, Enrico
082cd7c4-4c31-47ba-a011-cc4d3126f02b
Aragoni, M. Carla
3e73ed7a-2cf7-4f5e-9359-61d6e34a6cd5
Arca, Massimiliano
f90b59f6-4dfb-471d-912e-3515e6507165
Atzeni, Giulia
e8e92233-1f16-4584-a3cd-504037724b08
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Ennas, Guido
f33824dd-64ea-4389-b162-d7e35d9c67bd
Isaia, Francesco
11f997fe-81a3-4298-bbdc-15e5f2bf18cc
Lippolis, Vito
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Orrù, Germano
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Scano, Alessandra
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Orton, James
4e2a471f-9e11-4cb4-abb6-d0398047939f
Pintus, Anna
d2ae260a-d159-48a7-b000-539e8c19c68e
Scano, Alessandra
012f0811-9886-4fc6-a474-edc25b047c8b

Podda, Enrico, Aragoni, M. Carla, Arca, Massimiliano, Atzeni, Giulia, Coles, Simon J., Ennas, Guido, Isaia, Francesco, Lippolis, Vito, Orrù, Germano, Scano, Alessandra, Orton, James, Pintus, Anna and Scano, Alessandra (2021) Morpholine- and Thiomorpholine-based amidodithiophosphonato nickel complexes: synthesis, characterization, P–N cleavage, antibacterial activity and silica nano-dispersion. Journal of Nanoscience and Nanotechnology, 21 (5). (doi:10.1166/jnn.2021.19058).

Record type: Article

Abstract

The reactivity of thiomorpholinium P-(4-methoxyphenyl)-N-thiomorpholin-amidodithiophosphonate (S-MorH+ 2)(S-Mor-adtp−) and morpholinium P-(4-methoxyphenyl)-N-morpholin-amidodithiophosphonate (O-MorH+ 2)(O-Mor-adtp−) towards nickel (II) dichloride hexahydrated is presented and the hydrolysis of the relevant metal complexes investigated. The hydrolytic products (S-MorH+ 2)2 [Ni(dtp)2]2− and (O-MorH+ 2)2[Ni(dtp)2]2− were characterized by means of FT-IR, 1H, and 31P NMR and XRD and the experimented P–N cleavage investigated and elucidated by means of DFT calculations. The antimicrobial activity of the neutral nickel complex [Ni(S-Mor-adtp)2] was tested against a set of Gram-positive and Gram-negative bacteria alongside with its nanodispersion in a silica matrix. The complex [Ni(S-Mor-adtp)2] did not show antibacterial activity, whilst the nano-dispersed sample [Ni(S-Mor-adtp)2]_SiO2 demonstrated inhibition to growth of Staphylococcus aureus. The nanocomposites were fully characterized by means of XRPD, TGA, SEM and dinitrogen sorption techniques.

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Published date: 1 May 2021
Keywords: Amidodithiophosphonato, Antibacterial Activity, DFT Calculations, Nano-Dispersion, Nickel complexes, P–N cleavage

Identifiers

Local EPrints ID: 450736
URI: http://eprints.soton.ac.uk/id/eprint/450736
ISSN: 1533-4880
PURE UUID: edbba3aa-ff42-40cd-a25c-66f8d97ccb77
ORCID for Simon J. Coles: ORCID iD orcid.org/0000-0001-8414-9272

Catalogue record

Date deposited: 09 Aug 2021 16:34
Last modified: 10 Aug 2021 01:35

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Contributors

Author: Enrico Podda
Author: M. Carla Aragoni
Author: Massimiliano Arca
Author: Giulia Atzeni
Author: Simon J. Coles ORCID iD
Author: Guido Ennas
Author: Francesco Isaia
Author: Vito Lippolis
Author: Germano Orrù
Author: Alessandra Scano
Author: James Orton
Author: Anna Pintus
Author: Alessandra Scano

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