Complexation of Cd(SeCN)2 with imidazolidine-2-thione and its derivatives: Solid state, solution NMR and anti-bacterial studies

Bassem A. Al-Maythalony; Mohammed I.M. Wazeer; Anvarhusein A. Isab; M. T. Nael; Saeed Ahmad

doi:10.3233/SPE-2008-0359

Complexation of Cd(SeCN)₂ with imidazolidine-2-thione and its derivatives: Solid state, solution NMR and anti-bacterial studies

Bassem A. Al-Maythalony, Mohammed I.M. Wazeer, Anvarhusein A. Isab, M. T. Nael, Saeed Ahmad

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Reactions of imidazolidine-2-thione (Imt), 1,3-diazinane-2-thione (Diaz) and 1,3-diazipane-2-thione (Diap) with Cd(SeCN)₂ in acetonitrile resulted in the formation of 2:1 tetrahedral complexes. Both solid state and solution NMR, confirm the exocyclic thione atom to be the donor in all cases. ¹¹³Cd shielding tensors and anisotropies were calculated from the solid-state NMR spectra. Based on the solid NMR data, a distorted tetrahedral dispositions of ligands around cadmium is proposed for the Imt complex. However, when the Imt ligand is substituted with one or two R groups (where R=Me, Et or i-Pr) forming RImt or R₂Imt, a five coordinate complex with polymeric structure [(RImt)Cd(SeCN)₂]_∞ or [(R ₂Imt)Cd(SeCN)₂]_∞ is observed. Antibacterial studies of some of the complexes were carried out.

Original language	English
Pages (from-to)	361-370
Number of pages	10
Journal	Spectroscopy
Volume	22
Issue number	5
DOIs	https://doi.org/10.3233/SPE-2008-0359
State	Published - 2008

Keywords

CP MAS NMR studies
Cadmium(II) complexes
Imidazolidine-2-thione
Selenocyanate complexes

ASJC Scopus subject areas

Spectroscopy

Access to Document

10.3233/SPE-2008-0359

Cite this

@article{786b8f263d5e4c1b813b2d6b97fab1fe,

title = "Complexation of Cd(SeCN)2 with imidazolidine-2-thione and its derivatives: Solid state, solution NMR and anti-bacterial studies",

abstract = "Reactions of imidazolidine-2-thione (Imt), 1,3-diazinane-2-thione (Diaz) and 1,3-diazipane-2-thione (Diap) with Cd(SeCN)2 in acetonitrile resulted in the formation of 2:1 tetrahedral complexes. Both solid state and solution NMR, confirm the exocyclic thione atom to be the donor in all cases. 113Cd shielding tensors and anisotropies were calculated from the solid-state NMR spectra. Based on the solid NMR data, a distorted tetrahedral dispositions of ligands around cadmium is proposed for the Imt complex. However, when the Imt ligand is substituted with one or two R groups (where R=Me, Et or i-Pr) forming RImt or R2Imt, a five coordinate complex with polymeric structure [(RImt)Cd(SeCN)2]∞ or [(R 2Imt)Cd(SeCN)2]∞ is observed. Antibacterial studies of some of the complexes were carried out.",

keywords = "CP MAS NMR studies, Cadmium(II) complexes, Imidazolidine-2-thione, Selenocyanate complexes",

author = "Al-Maythalony, {Bassem A.} and Wazeer, {Mohammed I.M.} and Isab, {Anvarhusein A.} and Nael, {M. T.} and Saeed Ahmad",

year = "2008",

doi = "10.3233/SPE-2008-0359",

language = "English",

volume = "22",

pages = "361--370",

journal = "Spectroscopy",

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T1 - Complexation of Cd(SeCN)2 with imidazolidine-2-thione and its derivatives

T2 - Solid state, solution NMR and anti-bacterial studies

AU - Al-Maythalony, Bassem A.

AU - Wazeer, Mohammed I.M.

AU - Isab, Anvarhusein A.

AU - Nael, M. T.

AU - Ahmad, Saeed

PY - 2008

Y1 - 2008

N2 - Reactions of imidazolidine-2-thione (Imt), 1,3-diazinane-2-thione (Diaz) and 1,3-diazipane-2-thione (Diap) with Cd(SeCN)2 in acetonitrile resulted in the formation of 2:1 tetrahedral complexes. Both solid state and solution NMR, confirm the exocyclic thione atom to be the donor in all cases. 113Cd shielding tensors and anisotropies were calculated from the solid-state NMR spectra. Based on the solid NMR data, a distorted tetrahedral dispositions of ligands around cadmium is proposed for the Imt complex. However, when the Imt ligand is substituted with one or two R groups (where R=Me, Et or i-Pr) forming RImt or R2Imt, a five coordinate complex with polymeric structure [(RImt)Cd(SeCN)2]∞ or [(R 2Imt)Cd(SeCN)2]∞ is observed. Antibacterial studies of some of the complexes were carried out.

AB - Reactions of imidazolidine-2-thione (Imt), 1,3-diazinane-2-thione (Diaz) and 1,3-diazipane-2-thione (Diap) with Cd(SeCN)2 in acetonitrile resulted in the formation of 2:1 tetrahedral complexes. Both solid state and solution NMR, confirm the exocyclic thione atom to be the donor in all cases. 113Cd shielding tensors and anisotropies were calculated from the solid-state NMR spectra. Based on the solid NMR data, a distorted tetrahedral dispositions of ligands around cadmium is proposed for the Imt complex. However, when the Imt ligand is substituted with one or two R groups (where R=Me, Et or i-Pr) forming RImt or R2Imt, a five coordinate complex with polymeric structure [(RImt)Cd(SeCN)2]∞ or [(R 2Imt)Cd(SeCN)2]∞ is observed. Antibacterial studies of some of the complexes were carried out.

KW - CP MAS NMR studies

KW - Cadmium(II) complexes

KW - Imidazolidine-2-thione

KW - Selenocyanate complexes

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DO - 10.3233/SPE-2008-0359

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