Syntheses, Structures and Properties of a New Zn(II) Complex Based on the 2-(Benzoimidazol-2-yl-methyl)-1Htetrazole Ligand

2012 ◽  
Vol 67 (12) ◽  
pp. 1319-1324 ◽  
Author(s):  
Bingtao Liu ◽  
Rui Wang ◽  
Guiyang Zhang ◽  
Yanan Ding ◽  
Xiangru Meng
Keyword(s):  
Thermogravimetric Analysis ◽  
Ir Spectra ◽  
Single Crystal ◽  
Network Structure ◽  
Van Der Waals ◽  
Membered Ring ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structures And Properties ◽  
2D Network

A new Zn(II) complex [Zn2(bimt)2(Ac)(OH)]n (1) has been synthesized by the reaction of the flexible ligand 2-(benzoimidazol-2-yl-methyl)-1H-tetrazole (Hbimt) with Zn(Ac)2 · 2H2O and characterized by single-crystal X-ray diffraction and IR spectra. In complex 1, Zn1 and Zn2 ions are connected by μ2-bridging acetate and hydroxide groups to form a 6-membered ring. The bimt units coordinate to Zn1 and Zn2 ions in a bidentate bridging mode with two nitrogen atoms from the same benzoimidazole ring and connect the 6-membered rings resulting in the formation of a 2D network structure. Adjacent layers are further packed to a threedimensional network through van der Waals bonds. A thermogravimetric analysis was carried out, and the photoluminescent behavior of the complex was investigated.

Syntheses, Structures and Properties of a Cobalt(II) and a Cadmium(II) Complex Based on 1-((Benzotriazol-1-yl)methyl)-1H-1,3-imidazole and 1,3-Benzenedicarboxylate Ligands

2014 ◽  
Vol 69 (4) ◽  
pp. 423-431 ◽  
Author(s):  
Qiuying Huang ◽  
Weiping Tang ◽  
Yi Yang ◽  
Wei Liu
Keyword(s):  
Ir Spectra ◽  
Single Crystal ◽  
Layered Structure ◽  
Chain Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carboxylate Groups ◽  
Benzenedicarboxylic Acid ◽  
Structures And Properties ◽  
A Chain

Two new complexes with the formulae {[Co(bmi)2(bdc)(H2O)]·2H2O}n (1) and {[Cd(bmi)(bdc) (H2O)]·DMF}n (2) (bmi = 1-((benzotriazol-1-yl)methyl)-1H-1,3-imidazole, H2bdc = 1,3-benzenedicarboxylic acid) have been synthesized and characterized by single-crystal X-ray diffraction. Complex 1 exhibits a chain structure in which both carboxylate groups of each 1,3-benzenedicarboxylate coordinate to the Co(II) ions in monodentate and chelating modes, and the bmi ligands with a monodentate mode. Complex 2 features a layered structure where both carboxylate groups of each 1,3- benzenedicarboxylate coordinate to the Cd(II) ions in monodentate and chelating modes, but the bmi ligands with a bridging mode. The IR spectra, PXRD patterns, thermogravimetric analyses, and fluorescence properties are also presented.

Syntheses, Structures and Properties of Two Cd(II) Complexes Based on the 2-(1H-Imidazol-1-yl-methyl)-1H-benzimidazole Ligand

2012 ◽  
Vol 67 (7) ◽  
pp. 678-684 ◽  
Author(s):  
Xiao Su ◽  
Ting Li ◽  
Yu Xiu ◽  
Xiangru Meng
Keyword(s):  
Ir Spectra ◽  
Single Crystal ◽  
Room Temperature ◽  
Chain Structure ◽  
Fluorescence Properties ◽  
Solvent Exchange ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structures And Properties

Two new 1-D Cd(II) complexes, {[Cd(imb)(μ2-Cl)Cl]·CH3OH}n (1) and {[Cd(imb)(μ2- Cl)Cl]·DMF}n (2), have been synthesized by the reactions of the unsymmetrical ligand 2-(1Himidazol- 1-yl-methyl)-1H-benzimidazole (imb) with CdCl2·2.5H2O in methanol or methanol=DMF solution at room temperature, and structurally characterized by single-crystal X-ray diffraction. Complex 1 displays a ladder-shaped chain in which [Cd2Cl4] units are linked to each other through two bridging imb ligands. Complex 2 features an infinite looped chain structure composed of two kinds of rings, the smaller [Cd2Cl2] ring and the larger [Cd2imb2] ring, connected alternately via their Cd(II) ions. The different architectures of complexes 1 and 2 can be generated by solvent exchange. The IR spectra and fluorescence properties of the complexes have been also investigated.

Syntheses and Characterizations of Three Organically Templated Zinc Phosphites with 12-Ring Channels

2017 ◽  
Vol 70 (3) ◽  
pp. 286
Author(s):  
Zhen-Zhen Bao ◽  
Song-De Han ◽  
Jin-Hua Li ◽  
Guo-Ming Wang ◽  
Zong-Hua Wang
Keyword(s):  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Three Dimensional ◽  
Membered Ring ◽  
X Ray Diffraction ◽  
Organic Amine ◽  
X Ray ◽  
Hydroxyethyl Piperazine

Three new zinc phosphites, [Hapy]2[Zn3(HPO3)4] (1; apy = 4-aminopyridine), [H2hepip][Zn3(HPO3)4]·(H2O)0.25 (2; hepip = N-(2-hydroxyethyl)piperazine), and [H2tmdab][Zn3(HPO3)4] (3; tmdab = N,N,N′,N′-tetramethyl-1,3-diaminobutane), have been synthesized and characterized by infrared spectroscopy, elemental analysis, thermogravimetric analysis, and powder and single-crystal X-ray diffraction. The frameworks of 1–3 are constructed from 4-connected ZnO4 tetrahedra and 3-connected HPO3 pseudo pyramids with distinct connection mode driven by different organic amine templates. There are 12-membered ring (12-MR) and 8-MR apertures in the (3,4)-connected three-dimensional architecture of 1–3. It is notable that helical chains are observed in the framework of compound 3.

Polymorphism of Trimeric Perfluoro-ortho-phenylene Mercury, [Hg(o-C6F4)]3

2004 ◽  
Vol 59 (11-12) ◽  
pp. 1483-1487 ◽  
Author(s):  
Mason R. Haneline ◽  
François P. Gabbaï
Keyword(s):  
Single Crystal ◽  
Electrostatic Interactions ◽  
Van Der Waals ◽  
Relativistic Effects ◽  
Van Der Waals Interactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Π Interactions

Three new modifications of trimeric perfluoro-ortho-phenylene mercury (2) have been investigated by single crystal X-ray diffraction. In each of these modifications, the molecules of 2 form extended stacks. Within each stack, the successive molecules are parallel and separated by approximately 3.3 - 3.4 Å. The packing observed in the different structures is rationalized on the basis of secondary mercury-π interactions, mercuriophilic interactions and electrostatic interactions. Altogether, little preference is given for one particular type of interaction. The packing appears to be dominated by non-directional van der Waals interactions between molecules of 2 which are largely aromatic and whose overall polarizability is magnified by relativistic effects at the mercury(II) centers.

Soluble Pyridine Complexes Of The Ternary Gallium(III) Chalcogenide Halides (GaEX)3, With E = S, Se And X = Cl, Br

2001 ◽  
Vol 56 (8) ◽  
pp. 711-718 ◽  
Author(s):  
Stefan D. Nogai ◽  
Annette Schier ◽  
Hubert Schmidbaur
Keyword(s):  
Single Crystal ◽  
Molecular Complexes ◽  
Membered Ring ◽  
New Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pyridine Ligands ◽  
Ring Molecules ◽  
Gallium Metal ◽  
Convenient Preparation

The four ternary gallium(III) chalcogenide halides GaEX with E = S, Se and X = Cl, Br can be prepared a) from the binary gallium(III) chalcogenides Ga2E3 and halides Ga2X6, b) from gallium(I) tetrahalogallates(III) GafGaX4] and the chalcogen E, and c) from gallium metal and the dichalcogen dihalides E2X2. The new method c) was shown to be the most convenient preparation. The products are readily soluble in pyridine to give trinuclear molecular complexes [GaEX·Py]3 which are not volatile without decomposition, but can be purified by crystallization. The structures have been determined by single crystal X-ray diffraction techniques. The two chlorides are isostructural and show twisted tub-form six-membered ring molecules with the pyridine donors in axial positions. The two bromides are also isostructural, but with the pyridine ligands in two axial and one equatorial positions

Crystal structure of zerumbone [(E,E,E)-2,6,9,9-Tetramethylcycloundeca-2,6,10-trien-1-one]

1981 ◽  
Vol 34 (10) ◽  
pp. 2243 ◽  
Author(s):  
SR Hall ◽  
S Nimgirawath ◽  
CL Raston ◽  
A Sittatrakul ◽  
S Thadaniti ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Least Squares ◽  
Membered Ring ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Zingiber Zerumbet ◽  
Space Group ◽  
X Ray ◽  
Considerable Distortion

The crystal structure of zerumbone, C15H22O, extracted from the rhizomes of Zingiber zerumbet Smith, has been determined by single-crystal X-ray diffraction at 295(1) K and refined by least squares to a residual of 0.051 for 925 'observed' reflections. Crystals are monoclinic, space group P21/c, a 9.036(3), b 9.712(5), c 15.643(6) �, β 97.19(3)�, Z = 4. Although the molecule has no chiral centre, the presence of the three trans double bonds confers considerable distortion and rigidity on the eleven-membered ring and renders the whole molecule chiral and potentially resolvable.

A Series of Enthalpy/Entropy-Driven Reversible Dissolution/Reorganization Equilibriums in the System of Cu(NO3)2–HL–GdX3–H2O (HL=5-methylpyrazine-2-carboxylic acid; X=Cl, Br, NO3, ClO4)

2014 ◽  
Vol 67 (11) ◽  
pp. 1679
Author(s):  
Sheng Zhang ◽  
Qi Yang ◽  
Xiangyu Liu ◽  
Gang Xie ◽  
Qing Wei ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Magnetic Property ◽  
Structural Analysis ◽  
Carboxylic Acid ◽  
Single Crystal ◽  
Coordination Polymers ◽  
X Ray Diffraction ◽  
X Ray ◽  
2D Network ◽  
Thermal Stability Of

Five coordination polymers, [Cu(L)2]n (1), {[Cu(L)(Cl)(H2O)]·H2O}2n (2), [KCu(L)(μ-Cl)2]n (3), [Cu(L)(Br)H2O]n (4), and {[Cu0.5(HL)(H2O)](NO3)·H2O}2n (5) (HL = 5-methylpyrazine-2-carboxylic acid) were obtained by reactions of a pyramidal CuII-containing ligand, {[Cu(L)2(H2O)]·3H2O}n (LCu), with Gd(ClO4)3·6H2O, GdCl3·6H2O, GdCl3·6H2O/KCl, GdBr3·6H2O, or Gd(NO3)3·6H2O in water. Structural analysis reveals that the structures of these compounds range from a 0D block to a 2D network with modification of the environment of the CuII ions compared with LCu. Interestingly, there occurred a series of reversible dissolution/reorganization equilibriums between the initial reactants and the final products 1–5, which were determined as enthalpy/entropy driven chemical equilibriums by single crystal X-ray diffraction and microcalorimetry. In addition, the thermal stability of 1–4 and the magnetic property of 2 are discussed.

scholarly journals A pyridyl-substituted cyclodisilazane [(Apy)2(μ-SiMe)2] (ApyH2 = 2-aminopyridine)

IUCrData ◽  
2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Rui Li ◽  
Xin-E Duan ◽  
Wei Cao ◽  
Xue-Hong Wei
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Title Compound ◽  
Membered Ring ◽  
Side Product ◽  
Inversion Center ◽  
X Ray Diffraction ◽  
X Ray ◽  
Compound C

The title compound, C14H20N4Si2 or [(Apy)2(μ-SiMe)2], systematic name 2-[2,2,4,4-tetramethyl-3-(pyridin-2-yl)-1,3,2,4-diazadisiletidin-1-yl]pyridine, was obtained as a side product from the reaction of 2-amino-pyridine with LiBu n followed by the addition of Me2NMe2SiCl in hexane. The compound was characterized by single-crystal X-ray diffraction analysis and NMR spectroscopy. The title compound lies about an inversion center at the centroid of the cyclodisilazane ring. The four-membered Si2N2 core is strictly planar with the two pyridyl rings placed centrosymmetrically on either side of the Si2N2 plane and are almost coplanar with the central four-membered ring.

A twofold interpenetrating two-dimensional zinc(II) coordination polymer: synthesis, crystal structure and physical properties

2020 ◽  
Vol 76 (9) ◽  
pp. 850-855
Author(s):  
Ning-Ning Chen ◽  
Chen Zhang ◽  
Jian-Qing Tao
Keyword(s):  
Single Crystal ◽  
Uv Light ◽  
High Photocatalytic Activity ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Strong Fluorescence ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Coordination Framework ◽  
2D Network

A novel twofold interpenetrating two-dimensional (2D) ZnII coordination framework, poly[[(μ-1,3-bis(2-methyl-1H-imidazol-1-yl)benzene-κ2 N 3:N 3)(μ-naphthalene-2,6-dicarboxylato-κ2 O 2:O 6)zinc(II)] dimethylformamide monosolvate], {[Zn(C12H6O4)(C14H14N4)]·C3H7NO} n or {[Zn(1,3-BMIB)(NDC)]·DMF} n (I), where H2NDC is naphthalene-2,6-dicarboxylic acid, 1,3-BMIB is 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and DMF is dimethylformamide, was prepared and characterized through IR spectroscopy, elemental analysis, thermal analysis and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analysis revealed that (I) exhibits an unusual twofold interpenetrating 2D network. In addition, it displays strong fluorescence emissions and a high photocatalytic activity for the degradation of Rhodamine B (RhB) under UV-light irradiation.

On Attempts to Synthesize Lanthanide Complexes of the Dianionic Fluorenyl-alkoxo Ligand [C13H8-cyclo-C6H10-O]2-. Crystal Structure of (C13H9-cyclo-C6H10-O)LaI2(DME)2

2003 ◽  
Vol 58 (5) ◽  
pp. 389-394 ◽  
Author(s):  
Alexander A. Trifonov ◽  
Mikhail N. Bochkarev ◽  
Herbert Schumann ◽  
Sebastian Dechert
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Ir Spectra ◽  
Single Crystal ◽  
Lanthanide Complexes ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Elemental Analyses ◽  
C Nmr

Racemic trans-2-(9(H)-fluoren-9-yl)cyclohexanol, C13H9-cyclo-C6H10-OH (1), reacts with two equivalents of potassium naphthalenide in THF to give the dipotassium salt [C13H8-cyclo-C6H10-O]- K2(THF) (2). Recrystallization of 2 from pyridine affords the solvent free salt [C13H8-cyclo-C6H10- O]K2 (3). The reactions of LaI3(THF)4 with one equivalent of 2 or of YbI2(THF)2 with equimolar amounts of 2 produce the alkoxolanthanum diiodide (C13H9-cyclo-C6H10-O)LaI2(DME)2 (4) and the ytterbium dialkoxide (C13H9-cyclo-C6H10-O)2Yb(THF)0.5(5), respectively. [(Me3Si)2N]3Y reacts with three equivalents of 1 with elimination of hexamethyldisilazane and formation of the yttrium trialkoxide (C13H9-cyclo-C6H10-O)3Y (6). The compounds 2 to 5 were characterized by elemental analyses, 1H NMR, 13C NMR and IR spectra. The molecular structure of 4 was determined by single crystal X-ray diffraction.

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