Zn(II)-azide complexes of diimine and azoimine functions: Synthesis, spectra and X-ray structures

Das, Dipankar; Chand, B.G.; Sarker, Kamal Krishna; Dinda, Joydev; Sinha, Chittaranjan

doi:10.1016/j.poly.2006.01.033

Cited by 120 publications

(60 citation statements)

References 35 publications

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“…Such a PET process is prevented by the complexation of ligand with metal ions; thus the �uorescence intensity may be greatly enhanced by the coordination of metals. e chelation of the ligand to metals increases the rigidity of the ligand and thus reduces the loss of energy by thermal vibrational decay [43]. e emission and excitation spectra of the metal complexes are depicted in Figures 5(a) and 5(b).…”

Section: Fluorescencementioning

confidence: 99%

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Anitha¹,

Sheela

Tharmaraj

et al. 2013

International Journal of Inorganic Chemistry

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New complexes of 2,3-bis(5-(4-chlorophenyl)diazenyl)-2-hydroxybenzylideneamino)maleonitrile (CDHBDMN) with VO(II), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) were synthesized and characterized by analytical and physicochemical techniques, that is, elemental analyses, molar conductivity, UV, IR, EPR, 1 H-NMR spectra, magnetic susceptibility and also by aid of scanning electron microscopy (SEM), nonlinear optical study (NLO), �uorescence spectral studies, and solvatochromic behaviors. Electronic and magnetic susceptibility measurements of the complexes indicate square pyramidal geometry for VO(II), octahedral for Ni(II), and square planar geometry for all the other complexes. e EPR spectral data provide information about their structures on the basis of Hamiltonian parameters and the degree of covalency. ese metal complexes were also tested for their antibacterial and antifungal activities to assess their inhibiting potential. Metal-mediated �uorescence enhancement is observed on complexation of the azo Schiff base ligand. e synthesized compounds were investigated for nonlinear optical properties, and the surface morphology of the Cu(II) complex was studied by scanning electron microscopy.

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Section: Fluorescencementioning

confidence: 99%

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Anitha¹,

Sheela

Tharmaraj

et al. 2013

International Journal of Inorganic Chemistry

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“…At the beginning of the 21st century, Bose et al [54] reported the synthesis, characterization, and single-crystal XRD analyses of [Zn(dpa)(N 3 ) 2 ] and [Zn(dpa)(N 3 )(NO 3 )] 2 (dpa = 2,2Ј-dipyridylamine), and discussed the role of dpa in crystal engineering and in the luminescence behavior of these compounds. Das et al [55] have studied two new series of Zn II complexes containing imidazole derivatives and N 3 -groups. Zhu et al [56] have reported the optimization of the synthetic method for, and the explosive properties of, hydrazinenickel(II) azide.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Crystal Structures, Thermal Decomposition and Explosive Properties of Two Novel Energetic Compounds M(IMI)₄(N₃)₂ (M = Cu^II and Ni^II, IMI = Imidazole): The New High–Nitrogen Materials (N > 46 %)

Wang

Yang

et al. 2011

Eur J Inorg Chem

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Two novel multiligand coordination complexes of imidazolecopper(II) azide and imidazole-nickel(II) azide, Cu(IMI) 4 -(N 3 ) 2 and Ni(IMI) 4 (N 3 ) 2 , were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results show that the crystals of Cu(IMI) 4 (N 3 ) 2 and Ni(IMI) 4 (N 3 ) 2 crystallize in the orthorhombic Pna2 1 and monoclinic P2 1 /n space groups, respectively. The metal cations are six-coordinate, and are bound to two azido ligands by μ 1 -azido bridges and to four imidazole molecules through nitrogen atoms. Under nitrogen, with a heating rate of 5 K min -1 , these compounds go through two main exothermic stages between 420 K and 750 K during their thermal decom-

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“…Depending on the ligands involved, Zn(II) complexes show a wide variety of structures, such as dinuclear triple helix and polymer complexes. 5,6 The Schiff-base ligand (3,4,5-MeO-ba)2en acts as a bidentate ligand coordinating via two N atoms to the metal center.2 As part of our continuing interest in the synthesis of transition metal complexes with Schiff base ligands, 1,2 we have reported the title complex, [Zn((3,4,To a stirring solution of 320 mg (1 mmol) of ZnI2 in 3 ml of methanol was added dropwise a solution of 416 mg (1 mmol) of (3,4,5-MeO-ba)2en 7 in 3 ml of dichloromrthane. The solution was stirred for an additional 30 min at room temperature.…”

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Crystal Structure of N,N'-Bis(3,4,5-trimethoxybenzylidene)-ethylenediaminediiodozinc(II)

et al. 2008

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Schiff-base ligands have been extensively studied in the development of coordination complexes of transition metals. Depending on the ligands involved, Zn(II) complexes show a wide variety of structures, such as dinuclear triple helix and polymer complexes. 5,6 The Schiff-base ligand (3,4,5-MeO-ba)2en acts as a bidentate ligand coordinating via two N atoms to the metal center.2 As part of our continuing interest in the synthesis of transition metal complexes with Schiff base ligands, 1,2 we have reported the title complex, [Zn((3,4,To a stirring solution of 320 mg (1 mmol) of ZnI2 in 3 ml of methanol was added dropwise a solution of 416 mg (1 mmol) of (3,4,5-MeO-ba)2en 7 in 3 ml of dichloromrthane. The solution was stirred for an additional 30 min at room temperature. The product precipitated as a white powder, and was collected by filtration and then dissolved in 20 ml of acetone and filtered. The filtrate was left overnight to give colorless crystals.A colorless single crystal with dimensions of 0.25 ¥ 0.20 ¥ 0.18 mm 3 was chosen for a single-crystal X-ray diffraction study.Data were collected on a Enraf-Nonius CAD-4 diffractometer (graphite Mo Ka radiation, 071073 Å) at 293K. Details of the data collection and refinement parameters are listed in Table 1. The structure was solved by direct methods.The positions of the H atoms were placed in at geometrically idealized positions (C-H = 0.93 Å, N-H = 0.86 Å) and constrained to ride on their parent atoms with Uiso(H) = 1.2Ueq(carrier atom).Selected interatomic distances are gathered in Table 2.The crystal structure of the title complex, [Zn((3,4, The title complex, [Zn((3,4,5-MeO-ba)2en)I2], has been synthesized and structurally characterized by single crystal X-ray diffraction. The geometry around the zinc atom is a distorted tetrahedron. This structure consists of intermolecular hydrogen bonds of the type C-H·I and C-H·O.

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Zn(II)-azide complexes of diimine and azoimine functions: Synthesis, spectra and X-ray structures

Cited by 120 publications

References 35 publications

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Preparation, Crystal Structures, Thermal Decomposition and Explosive Properties of Two Novel Energetic Compounds M(IMI)₄(N₃)₂ (M = Cu^II and Ni^II, IMI = Imidazole): The New High–Nitrogen Materials (N > 46 %)

Crystal Structure of N,N'-Bis(3,4,5-trimethoxybenzylidene)-ethylenediaminediiodozinc(II)

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Zn(II)-azide complexes of diimine and azoimine functions: Synthesis, spectra and X-ray structures

Cited by 120 publications

References 35 publications

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Studies on Synthesis and Spectral Characterization of Some Transition Metal Complexes of Azo-Azomethine Derivative of Diaminomaleonitrile

Preparation, Crystal Structures, Thermal Decomposition and Explosive Properties of Two Novel Energetic Compounds M(IMI)4(N3)2 (M = CuII and NiII, IMI = Imidazole): The New High–Nitrogen Materials (N > 46 %)

Crystal Structure of N,N'-Bis(3,4,5-trimethoxybenzylidene)-ethylenediaminediiodozinc(II)

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Preparation, Crystal Structures, Thermal Decomposition and Explosive Properties of Two Novel Energetic Compounds M(IMI)₄(N₃)₂ (M = Cu^II and Ni^II, IMI = Imidazole): The New High–Nitrogen Materials (N > 46 %)