Synthesis and Characterization Complexes of Ni(II) that Contain Cyanoguanidine and Phosphines Ligands

Irzoqi, Ahmad A.; Salih, None Mahmood Mahdi

doi:10.25130/tjps.23.2018.014

Tikrit J. Pure Sci.

2018

DOI: 10.25130/tjps.23.2018.014

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Synthesis and Characterization Complexes of Ni(II) that Contain Cyanoguanidine and Phosphines Ligands

Ahmad A. Irzoqi¹,

None Mahmood Mahdi Salih²

Abstract: The ligand of Cyanoguanidine showed an important coordination formula with Ni 2+ to give a complex of tetrahedral geometrical shape [Ni(CY)2Cl2] when the metal reacted with Cyanoguanidine of 1:2 ratio, and octahedral complexes of the types [Ni(CY)2(PPh3)2Cl2], [Ni(CY)2)(PPh3)4]Cl2 and [Ni(CY)2(diphos)2]Cl2 (where CY= Cyanoguanidine and diphos = dppm, dppe, dppp, dppb), since the structure depends on the conditions and type of the compounds involved in reaction. The prepared complexes were characterized by elem… Show more

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Cited by 3 publications

References 16 publications

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Cu(C₂N₄H₄)₂Br₂·2H₂O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

Zhang

Corkett

Leusen

et al. 2022

Zeitschrift Für Naturforschung B

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Phase-pure copper(II) cyanoguanidine bromide hydrate, Cu(C2N4H4)2Br2·2H2O (1), was precipitated from aqueous solution and its structure was solved and refined from single-crystal X-ray diffraction data at 100 K. 1 crystallizes in space group P21/n with a = 12.09(3) Å, b = 3.925(9) Å, c = 13.79(3) Å, β = 96.62(6)°, Z = 2, and V = 650(2) Å3. The copper(II) cation is coordinated by two cyanoguanidine molecules adopting the cyanoimine shape and four bromide anions in a Jahn–Teller-distorted motif, forming infinite chains of edge-sharing octahedra along the crystallographic b axis. IR spectroscopic and magnetic susceptibility measurements were carried out in addition to density-functional electronic-structure calculations performed to assess both the magnetic ground state and the exchange interactions. Experiment and theory agree as regards antiferromagnetism and weak magnetic exchange.

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Cu(C₂N₄H₄)₂Br₂·2H₂O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

Zhang

Corkett

Leusen

et al. 2022

Zeitschrift Für Naturforschung B

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New nitrification inhibitors based on copper(II) complex compounds

Malook,

Matrosov,

Kramarev

et al. 2023

Vopr. Khim. Khim. Tekhnol.

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The work presents the results of research aimed at the synthesis of new nitrification inhibitors based on complex compounds of Cu2+ with 4-amino-1,2,4-triazole (ATC) and dicyandiamide (DCD). The purpose of the conducted work is the synthesis of new nitrification inhibitors based on complex copper compounds followed with subsequent studies of their structure, properties and biological activity. Four compounds of different compositions were obtained. A number of physical and chemical properties of substances were established: thermal behavior, and solubility in the KAS-28 system (a saturated solution of urea and ammonium nitrate with a nitrogen content of 28%)–water. With the help of infrared spectroscopy, the presence of functional groups and bonds inherent in ligands was proven in the synthesized compounds. Possible ways of coordination of 4-amino-1,2,4-triazole (monodentately through the atom N1 or N2) and dicyandiamide (through the group C=NH or CN with equal probability) were proposed. The content of Cu2+ ions in the synthesized compounds was determined by iodometry. The biological activity of the synthesized substances in relation to soil bacteria was investigated by the potentiometric method. The dynamics of changes in NH4+ and NO3– ions in research samples containing the obtained substances and commonly used nitrification inhibitors (ATC and DCD) was established. All results were equated relative to the control. It was established that the substance with the probable empirical formula [Cu(ATC)2(DCD)1(H2O)1]SO4 had the highest biological activity.

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Solvent-Induced Cobalt(II) Cyanoguanidine Bromides: Syntheses, Crystal Structure, Optical and Magnetic Properties

Zhang

Corkett²,

Leusen³

et al. 2022

Crystals

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Two different phase-pure cobalt(II) cyanoguanidine bromide coordination compounds, Co(C2N4H4)2(H2O)4·2Br·2H2O (1) and Co3(C2N4H4)8(H2O)8·6Br (2), were precipitated from aqueous and methanol solutions, respectively, and their structures were solved and refined from X-ray single-crystal data at 100 K. Both 1 and 2 crystallize in the triclinic system with space group P. The structure of 1 consists of two crystallographically distinct isolated CoO4N2 octahedral units plus bromide anions and crystal water molecules, whereas 2 is built from both isolated octahedra and discrete binuclear cluster units made from edge-sharing octahedra. Diffuse reflectance spectra and IR analysis then go on to highlight optical and vibrational differences between these two compounds. The magnetic susceptibility of 1 is consistent with either isolated or very weakly interacting Co2+ centers whereas the magnetic susceptibility of 2 evidences the potential weak antiferromagnetic exchange interactions that may arise from superexchange within the binuclear clusters.

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Synthesis and Characterization Complexes of Ni(II) that Contain Cyanoguanidine and Phosphines Ligands

Cited by 3 publications

References 16 publications

Cu(C₂N₄H₄)₂Br₂·2H₂O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

Cu(C₂N₄H₄)₂Br₂·2H₂O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

New nitrification inhibitors based on copper(II) complex compounds

Solvent-Induced Cobalt(II) Cyanoguanidine Bromides: Syntheses, Crystal Structure, Optical and Magnetic Properties

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Product

Resources

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Synthesis and Characterization Complexes of Ni(II) that Contain Cyanoguanidine and Phosphines Ligands

Cited by 3 publications

References 16 publications

Cu(C2N4H4)2Br2·2H2O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

Cu(C2N4H4)2Br2·2H2O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

New nitrification inhibitors based on copper(II) complex compounds

Solvent-Induced Cobalt(II) Cyanoguanidine Bromides: Syntheses, Crystal Structure, Optical and Magnetic Properties

Contact Info

Product

Resources

About

Cu(C₂N₄H₄)₂Br₂·2H₂O: an antiferromagnetic cyanoguanidine coordination compound and its characterization

Cu(C₂N₄H₄)₂Br₂·2H₂O: an antiferromagnetic cyanoguanidine coordination compound and its characterization