Q1. What are the contributions in this paper?
In this paper, Mahmood et al. reported the crystal structures of new 2D polymeric cadmium ( II ) complexes containing 1,3imidazolidine-2-thione ( Imt ) ligand.
2D polymeric cadmium(II) complexes containing 1,3-imidazolidine-2-thione (Imt) ligand, [Cd(Imt)(H2O)2(SO4)]n and [Cd(Imt)2(N3)2]n
TL;DR: In this paper, the structural investigation of two polymeric cadmium(II) complexes of imidazolidine-2-thione (Imt) based on sulfate or azide ions was carried out.
About: This article is published in Journal of Molecular Structure.The article was published on 2018-03-15 and is currently open access. It has received 9 citations till now. The article focuses on the topics: Octahedral molecular geometry & Coordination sphere.
Summary (1 min read)
1. Introduction
- Cadmium(II) is known to form a wide variety of 1:1 to 1:4 complexes with thiones (L), with the structural arrangements generally based on tetrahedl and octahedral coordination environments.
- (MeImt = N-methylimidazolidine-2-thione) usually exist in the polymeric form.
2. Experimental
- 1. Materials M AN US CR IP T AC CE PT ED 4 Cadmium sulfate (CdSO4 .8/3H2O) and NaN3 were obtained from Merck Chemical Company, Germany.
- Imidazolidine-2-thione was prepared according to the method reported in the literature [36].
- As a result, a white crystalline product was obtained, that was washed with methanol and dried.
- Crystal data and details of the data collection are summarized in Table 1.
3. Results and Discussion
- 1. X-ray Structure Studies Selected bond angles and distances are given in Table 1.
- The azide anion forms an end-to-end bridge between two cadmium ions resulting into a 2D network based on a 16-membered ring motif [CdN3]4 .
4. Conclusion
- The X-ray structures of the complexes show that both of them exist in the form of two dimensional polymers with each cadmium atom being octahedrally coordinated.
- The polymers are assembled through triplybridging sulfate and doubly-bridging, µ(1,3) azide ions in case of 1 and 2 respectively.
- Acknowledgement M AN US CR IP T AC CE PT ED 14 The Deanship of Scientific Research, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia is gratefully acknowledged for supporting this work through Project No. 2016/01/6822.
- Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK, e-mail: deposit@ccdc.cam.ac.uk or www.ccdc.cam.ac.uk.
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Figures (5)
Table 1. Crystal data and details of the structure refinement for compounds 1 and 2. 
Figure 6. View of the packing of the 2D networks in compound 2 in the form of a 3D network 
Table 2. Selected bond distances (Å) and bond angles (˚) for compounds 1 and 2 
Figure 4. ORTEP diagram of the molecular structure of compound 2 showing the atomic labeling scheme. Thermal ellipsoids have been drawn t 50% probability level. Symmetry codes: i = x, 1+y, z ; ii = -x+1/2, -y+3/2, 1-z ; iii = 1-x, y, -z+3/2 
Table 3 Hydrogen bond parameters in complexes 1 and 2 (Å, deg)a _______________________________________________________________________ D-H...A d(D-H) d(H...A) d(D...A) ∠(D-H-A) _______________________________________________________________________ (1)
Citations
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TL;DR: A survey of relatively recent coordination compounds of these metals is described with selective heterocyclic thiones, namely, pyridine-2-thione, pyrimidine-two-thiones and purine-6thione as discussed by the authors.
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TL;DR: In this article, a series of 1,3-disubstituted 4-benzylideneamino-5thioxohexahydroimidazo[4,5-d]imidazol-2(1H)-ones (thioglycolurils) was synthesized via the reaction of 5,7-disubsubstitized 3-thioxoperhydroIMidazo [4, 5-e]-1,2,4-triazin-6-ones with hydroxy-, alkoxy-, and
Abstract: A series of 1,3-disubstituted 4-benzylideneamino-5-thioxohexahydroimidazo[4,5-d]imidazol-2(1H)-ones (thioglycolurils) was synthesized via the reaction of 5,7-disubstituted 3-thioxoperhydroimidazo[4,5-e]-1,2,4-triazin-6-ones with hydroxy-, alkoxy-, and fluorocontaining benzaldehyde derivatives. An alkylation of the obtained thioglycolurils with methyl iodide or 4-bromobenzyl bromide provided the corresponding 6-benzylideneamino-5-alkylsulfanyl-3,3a,6,6a-tetrahydroimidazo[4,5-d]imidazol-2(1H)-ones. The fungicidal activity of some synthesized compounds against pathogens causing diseases of agricultural crops was studied.
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TL;DR: In this article, the properties of the Cadmium(II) complexes of thioureas, [Cd(Tu)(SO4)(H2O)2]n (1), [Ccd(Dmtu)2(SO4), H2O 2, H2 O 2 ]n (2) and Mpy 2(Mpy) 2(SO 4 )n (3) were characterized by IR and NMR spectroscopy, and thermal analysis.
2 citations
TL;DR: In this paper , the authors synthesized four new Au(I)-NHC complexes (1-4) by reacting (1,3-bis(2,6-di-isopropylphenyl)imidazol-2-ylidenegold(I)chloride) (Au(Ipr)Cl) with four different thiones, namely N-(i-propyl)IMidazolidine- 2-thione (i-PrImt), N-(dipropyl)-imidrazolidine (2-THione), 1, 3-Diazinane-2,Diaz, and 1,3 -Diazipane- 2 -thione(Diap), which showed moderate anticancer activities against selected cancer cell lines.
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References
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TL;DR: The complex salts CdL4(O3SCF3)2 (L = 2(1H)-pyridinethione (Py2SH), 4 (1H)pyrinethion (Py4SH), or 2( 1H)-quinolinethione(Q2SH)) have been synthesized by the stoichiometric reaction of Cd(O 3SCF 3)2 as discussed by the authors.
Abstract: The complex salts CdL4(O3SCF3)2 (L = 2(1H)-pyridinethione (Py2SH), 4(1H)-pyridinethione (Py4SH), or 2(1H)-quinolinethione (Q2SH)) have been synthesized by the stoichiometric reaction of Cd(O3SCF3)2
29 citations
TL;DR: In this article, the authors describe a pseudo-tetrahedral coordination with monodentate carboxylate ligands, which is common for Zn complexes of this kind, but is unusual for Cd complexes.
26 citations
TL;DR: The crystal structure of tristhiourea-cadmium sulphate, Cd(SC(NH2)2)3SO4, has been determined by three dimensional X-ray analysis as discussed by the authors.
25 citations
TL;DR: A high nitrogen-contented cadmium (II) coordination polymer [Cd(DAT)2(N3)2]n (DAT = 1,5-diaminotetrazole) has been synthesized and characterized by elemental analysis and FT-IR spectrum The crystal structure was determined by using single crystal X-ray diffraction analysis with monoclinic cell: P21/n space group.
23 citations
TL;DR: In this article, the crystal structure of a cadmium(II) complex of 1,3-imidazolidine-2-thione (Imt) coordinated with two molecules of Imt and two Cl - ions, [CdCl 2 (C 3 H 6 N 2 S) 2 ], has been performed in order to obtain accurate parameters and to study the effects of the metal coordination on the metal-S and C-S bonds in Imt complexes.
Abstract: The redetermination of the crystal structure of a cadmium(II) complex of 1,3-imidazolidine-2-thione (Imt) coordinated with two molecules of Imt and two Cl - ions, [CdCl 2 (C 3 H 6 N 2 S) 2 ], has been performed in order to obtain accurate parameters and to study the effects of the metal coordination on the metal-S and C-S bonds in Imt complexes. The Cd I -S distances of 2.525(2) and 2.535(2)A in the present tetrahedral complex are significantly longer than the corresponding distances in the Au I and Cu II complexes of Imt, but there is no significant difference in the C-S distances of 1.721(6) and 1.710(6)A from that in Au I and Cu II complexes. This work represents a significant increase in the quality of the structure of the title compound over the earlier work.
23 citations