Three metal(II) complexes constructed using the 2-(1H-benzo[d]imidazol-2-yl)quinoline ligand

Abstract 2-(1H-benzo[d]imidazol-2-yl)quinoline (BQ) as ligand and three coordination compounds of formula {Zn(BQ)Cl2} (1), {Pb(BQ)Cl2} n (2) and {[Cu(BQ)2(OC(O)CH3)]OC(O)CH3 · CH3COOH} (3) have been synthesized and fully characterized. The complexes crystallize in triclinic space group P 1 ‾ $P‾{1}$ . In complexes 1 and 2, the coordination geometry is a distorted tetrahedral environment around the zinc center and a distorted sixfold coordination geometry around the lead center, respectively. In complex 3 the central Cu(II) center is in a trigonal bipyramidal coordination geometry. The Cu(II) ion is surrounded by two bidentate 2-(2′-quinolyl)benzimidazole (BQ) ligands and one coordinated acetate molecule. One further acetate anion associated by a strong hydrogen bond with a molecule of acetic acid balances the charge of the compound.

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Complexes of N-methylxanthines with carboxylic acids

Canadian Journal of Chemistry ◽

10.1139/v68-506 ◽

1968 ◽

Vol 46 (19) ◽

pp. 3055-3059 ◽

Cited By ~ 8

Author(s):

Denys Cook ◽

Zephyr R. Regnier

Keyword(s):

Hydrogen Bond ◽

Acetic Acid ◽

Salicylic Acid ◽

Infrared Spectroscopy ◽

Nitrogen Atom ◽

Imidazole Ring ◽

Intermolecular Forces ◽

Strong Hydrogen Bond ◽

Lipid Solubility ◽

Aromatic Acids

Complexes of caffeine and theobromine, with acetic and salicylic acid, have been studied by means of infrared spectroscopy. In the complexes with aromatic acids a fairly strong hydrogen bond exists between the carboxylic OH group and the nitrogen atom N-9 in the imidazole ring. The acetic acid complexes involve no strong intermolecular forces and are probably weak lattice complexes.The complexes with aromatic acids are discussed in relation to theories of lipid solubility and gastrointestinal absorption.

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Two ZnIImononuclear coordination compounds with pyridinedicarboxylate and auxiliaryN-(pyridin-4-ylmethylidene)hydroxylamine ligands

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229614023109 ◽

2014 ◽

Vol 70 (12) ◽

pp. 1101-1104 ◽

Cited By ~ 2

Author(s):

Eduard B. Coropceanu ◽

Ana Dreab ◽

Lilia Croitor

Keyword(s):

Single Crystal ◽

Coordination Compounds ◽

Octahedral Geometry ◽

Distorted Octahedral Geometry ◽

Water Molecules ◽

Coordination Geometry ◽

X Ray ◽

Trigonal Bipyramidal Coordination ◽

Trigonal Bipyramidal ◽

Distorted Octahedral

Two new mononuclear coordination compounds, bis{4-[(hydroxyimino)methyl]pyridinium} diaquabis(pyridine-2,5-dicarboxylato-κ2N,O2)zincate(II), (C6H7N2O)2[Zn(C7H3NO4)2(H2O)2], (1), and (pyridine-2,6-dicarboxylato-κ3O2,N,O6)bis[N-(pyridin-4-ylmethylidene-κN)hydroxylamine]zinc(II), [Zn(C7H3NO4)(C6H6N2O)2], (2), have been synthesized and characterized by single-crystal X-ray diffractometry. The centrosymmetric ZnIIcation in (1) is octahedrally coordinated by two chelating pyridine-2,5-dicarboxylate ligands and by two water molecules in a distorted octahedral geometry. In (2), the ZnIIcation is coordinated by a tridentate pyridine-2,6-dicarboxylate dianion and by twoN-(pyridin-4-ylmethylidene)hydroxylamine molecules in a distortedC2-symmetric trigonal bipyramidal coordination geometry.

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(N,N′-Diethylthiourea-κS)tris(triphenylphosphane-κP)silver(I) acetate methanol monosolvate

Acta Crystallographica Section E Structure Reports Online ◽

10.1107/s1600536814010824 ◽

2014 ◽

Vol 70 (6) ◽

pp. m216-m217 ◽

Cited By ~ 2

Author(s):

Yupa Wattanakanjana ◽

Arunpatcha Nimthong ◽

Chanakan Kamrod

Keyword(s):

Hydrogen Bond ◽

Complex Molecule ◽

Acetate Anion ◽

Coordination Geometry ◽

Tetrahedral Coordination ◽

Bond Forming ◽

Dimensional Network ◽

A Chain ◽

Intermolecular Distances ◽

Distorted Tetrahedral Coordination

In the mononuclear title complex, [Ag(C5H12N2S)(C18H15P)3](CH3COO)·CH3OH, the AgIion is in a distorted tetrahedral coordination geometry formed by three P atoms from three triphenylphosphane ligands and one S atom from anN,N′-diethylthiourea ligand. In the crystal, the acetate anion is connected to the complex moleculeviaa pair of N—H...O hydrogen bonds [graph-set motifR22(8)] and the solvent methanol molecule is connected to the anionviaan O—H...O hydrogen bond. This aggregate is further connected through a weak C—H...O hydrogen bond, forming a chain along [100]. In addition, sixfold phenyl embraces with intermolecular distances of 6.6463 (13)–6.667 (2) Å are arranged in a chain along [001]. The combination of hydrogen bonding and phenyl...phenyl interactions leads to the formation of a two-dimensional network parallel to (010).

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Synthesis and structure of N,N′-ethylenebis(salicylideneiminato)chlorogallium(III) and its methyl analog

Canadian Journal of Chemistry ◽

10.1139/v81-015 ◽

1981 ◽

Vol 59 (1) ◽

pp. 94-99 ◽

Cited By ~ 9

Author(s):

Kenneth S. Chong ◽

Steven J. Rettig ◽

Alan Storr ◽

James Trotter

Keyword(s):

Crystal Structure ◽

Hydrogen Bond ◽

Physical Properties ◽

Least Squares ◽

Coordination Geometry ◽

Form Complex ◽

Gallium Atom ◽

Full Matrix ◽

Trigonal Bipyramidal ◽

Methyl Analog

The synthesis and physical properties of N,N′-ethylenebis(salicylideneiminato)chlorogallium(III) and N,N′-ethylenebis(salicylideneiminato)methylgallium(III) are described. Crystals of N,N′-ethylenebis(salicylideneiminato)chlorogallium(III) dichloromethane are monoclinic, a = 13.049(1), b = 9.525(1), c = 15.459(2) Å, β = 92.452(5)°, Z = 4, space group P21/a. The structure was solved by Patterson and Fourier syntheses and was refined by full-matrix least-squares procedures to R = 0.042 and Rw = 0.051 for 1815 reflections with I ≥ 3σ(I). The gallium atom is bonded to one chlorine atom and to the tetradentate N,N′-ethylenebis(salicylideneiminato) ligand to give a coordination geometry which is intermediate between square pyramidal and trigonal bipyramidal. Important bond lengths (corrected for libration) are: Ga—Cl, 2.228(2), Ga—O, 1.868(4) and 1.883(4), Ga—N, 2.019(6) and 2.035(5) Å. The crystal structure consists of discrete (C16H14N2O2)GaCl and CH2Cl2 molecules linked by a[Formula: see text]hydrogen bond [Formula: see text]to form complex-solvate units.

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Bis(μ3-pyrimidine-4-carboxylato)bis(μ2-pyrimidine-4-carboxylato)tetrakis(aqualithium)

Acta Crystallographica Section E Structure Reports Online ◽

10.1107/s160053681203142x ◽

2012 ◽

Vol 68 (8) ◽

pp. m1065-m1066 ◽

Cited By ~ 2

Author(s):

Wojciech Starosta ◽

Janusz Leciejewicz

Keyword(s):

Hydrogen Bond ◽

The Other ◽

Water Molecules ◽

Coordination Geometry ◽

Tetrahedral Coordination ◽

Asymmetric Unit ◽

Trigonal Bipyramidal ◽

Coordinated Water ◽

Distorted Tetrahedral Coordination ◽

Distorted Trigonal Bipyramidal

The asymmetric unit of the title compound, [Li4(C5H3N2O2)4(H2O)4], contains two symmetry-independent LiIions, two symmetry-independent ligands and two symmetry-independent coordinated water molecules. They form a dinuclear unit in which the two LiIions are bridged by two carboxylate O atoms from the two ligands. Two dinuclear units related by an inversion centre form the tetrameric molecule. One of the LiIions shows a distorted tetrahedral coordination geometry, the other a distorted trigonal–bipyramidal environment. The tetramers are held together by hydrogen bonds in which coordinated water molecules act as donors, and the carboxylate O atoms act as acceptors. A hydrogen bond between coordinated water molecule as donor and a ring N atom as acceptor is also observed.

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Hydrogen bond synthons affect coordination geometry of d10-metal halide complexes: Synthetic methods, theoretical studies and supramolecular architectures

CrystEngComm ◽

10.1039/d1ce00747e ◽

2021 ◽

Author(s):

Zahra Nezhadali Baghan ◽

Alireza Salimi ◽

Hossein Eshtiagh Hosseini ◽

Allen Grayson Oliver

Keyword(s):

Hydrogen Bond ◽

Coordination Compounds ◽

Metal Halide ◽

Synthetic Methods ◽

Theoretical Studies ◽

Coordination Geometry ◽

Supramolecular Architectures ◽

D10 Metal ◽

Halide Complexes

In this study, five new d10-metal halide coordination compounds, namely [HgCl2(L)]n (1), [HgBr2(L)]n (2), [HgI2(L)]n (3), [ZnCl2(L)2] (4) and [CdI2(L)2]n (5) (L is N-(3-pyridinyl)-2-pyrazine carboxamide ligand) have been prepared by...

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Hydrogen bonds in N-(3-chloro-2-benzo[b]thienocarbonyl)- and N-(2-benzo[b]thienocarbonyl)-N'-monosubstituted thioureas

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19872673 ◽

1987 ◽

Vol 52 (11) ◽

pp. 2673-2679 ◽

Cited By ~ 1

Author(s):

Oľga Hritzová ◽

Peter Kutschy ◽

Ján Imrich ◽

Thomas Schöffmann

Keyword(s):

Hydrogen Bond ◽

Hydrogen Bonds ◽

Strong Hydrogen Bond ◽

Cyclic Form ◽

Thiourea Derivatives

N-(3-Chloro-2-benzo[b]thienocarbonyl)-N'-monosubstituted thiourea derivatives undergo photocyclizations with lower yields than those obtained from analogous N',N'-disubstituted derivatives. This decreased reactivity is caused by the existence of a six-membered cyclic form with the very strong hydrogen bond NH···O=C. The possibility of formation of various conformers has been found with N-(2-benzo[b]thienocarbonyl)-N'-monosubstituted thiourea derivatives as a consequence of the rotation around the C(2)-C(O) connecting line.

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Highly selective separation of acetic acid and hydrochloric acid by alkylamide based on double hydrogen bond coupling mechanism

Separation and Purification Technology ◽

10.1016/j.seppur.2021.119110 ◽

2021 ◽

pp. 119110

Author(s):

Yaqiang Li ◽

Lijuan Liu ◽

Qifeng Wei ◽

Xiulian Ren ◽

Maozhong An

Keyword(s):

Hydrogen Bond ◽

Acetic Acid ◽

Hydrochloric Acid ◽

Selective Separation ◽

Coupling Mechanism ◽

Double Hydrogen

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Crystal structure of tamsulosin hydrochloride, C20H29N2O5SCl

Powder Diffraction ◽

10.1017/s0885715621000129 ◽

2021 ◽

pp. 1-7

Author(s):

Nilan V. Patel ◽

Joseph T. Golab ◽

James A. Kaduk ◽

Amy M. Gindhart ◽

Thomas N. Blanton

Keyword(s):

Crystal Structure ◽

Hydrogen Bond ◽

Hydrogen Atom ◽

Powder Diffraction ◽

Density Functional ◽

Carbon Chain ◽

Strong Hydrogen Bond ◽

Powder Diffraction File ◽

Ether Oxygen ◽

Sulfonamide Group

The crystal structure of tamsulosin hydrochloride has been solved and refined using synchrotron X-ray powder diffraction data and optimized using density functional techniques. Tamsulosin hydrochloride crystallizes in space group P21 (#4) with a = 7.62988(2), b = 9.27652(2), c = 31.84996(12) Å, β = 93.2221(2)°, V = 2250.734(7) Å3, and Z = 4. In the crystal structure, two arene rings are connected by a carbon chain oriented roughly parallel to the c-axis. The crystal structure is characterized by two slabs of tamsulosin hydrochloride molecules perpendicular to the c-axis. As expected, each of the hydrogens on the protonated nitrogen atoms makes a strong hydrogen bond to one of the chloride anions. The result is to link the cations and anions into columns along the b-axis. One hydrogen atom of each sulfonamide group also makes a hydrogen bond to a chloride anion. The other hydrogen atom of each sulfonamide group forms bifurcated hydrogen bonds to two ether oxygen atoms. The powder pattern is included in the Powder Diffraction File™ as entry 00-065-1415.

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