A square-pyramidal copper(II) complex with strong intramolecular hydrogen bonds: diaqua(N,N′-dimethylformamide-κO)bis[2-(diphenylphosphoryl)benzoato-κO]copper(II)

2013 ◽  
Vol 69 (5) ◽  
pp. 463-466 ◽  
Author(s):  
Mengbo Zhou ◽  
Li Song ◽  
Feng Niu ◽  
Kangying Shu ◽  
Wenxiang Chai
Keyword(s):  
Hydrogen Bonds ◽  
Water Ligand ◽  
Water Molecules ◽  
Absorption Properties ◽  
Intramolecular Hydrogen Bonds ◽  
Twofold Axis ◽  
Powder Samples ◽  
The Stability ◽  
Coordinated Water ◽  
Intramolecular Hydrogen

In the title CuIIcomplex, [Cu(C19H14O3P)2(C3H7NO)(H2O)2], the molecule is bisected by a twofold axis relating the two 2-(diphenylphosphoryl)benzoate (ODPPB) ligands. The asymmetric unit consists of a CuIImetal centre on the symmetry axis, an ODPPB ligand, one water ligand and one dimethylformamide (DMF) ligand (disordered around the twofold axis). The CuIIion has fivefold coordination provided by two carboxylate O atoms from two ODPPB ligands, two O atoms from two coordinated water molecules and another O atom from a (disordered) DMF molecule, giving a CuO5square-pyramidal coordination geometry. The ODPPB ligand adopts a terminal monocoordinated mode with two free O atoms forming two strong intramolecular hydrogen bonds with the coordinated water molecules, which may play a key role in the stability of the molecular structure, as shown by the higher release temperature for the coordinated water molecules than for the coordinated DMF molecule. The optical absorption properties of powder samples of the title compound have also been studied.

Chlorobis[N′-ethoxycarbonyl-N-(4-methylphenyl)thiourea-κS]copper(I)

2003 ◽  
Vol 59 (11) ◽  
pp. m473-m474 ◽  
Author(s):  
You-Ming Zhang ◽  
Liang Xian ◽  
Tai-Bao Wei
Keyword(s):  
Hydrogen Bonds ◽  
Cupric Chloride ◽  
Title Complex ◽  
Thiourea Derivative ◽  
Coordination Environment ◽  
Intramolecular Hydrogen Bonds ◽  
The Stability ◽  
Intramolecular Hydrogen ◽  
Cl Atom

The title complex, chlorobis{ethyl N-[(4-methylanilino)thiocarbonyl]carbamate-κS}copper(I), [CuCl(C11H14N2O2S)2], was synthesized by the reaction of cupric chloride with the corresponding thiourea derivative. The complex has imposed crystallographic m symmetry and the CuI coordination environment is trigonal planar, formed by two S atoms and one Cl atom. The formation of intramolecular hydrogen bonds promotes the stability of the complex.

Dirubidium hexaaquacobalt(II) tetrakis(hydrogen phthalate) tetrahydrate and coordination modes of the hydrogen phthalate anion

2013 ◽  
Vol 69 (8) ◽  
pp. 841-846 ◽  
Author(s):  
Dejan Poleti ◽  
Jelena Rogan
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Outer Part ◽  
Water Molecules ◽  
Hydrogen Phthalate ◽  
Aromatic Rings ◽  
Intramolecular Hydrogen Bonds ◽  
Coordination Modes ◽  
Bonding Interaction ◽  
Intramolecular Hydrogen

The title compound, Rb2[Co(H2O)6](C8H5O4)4·4H2O, consists of nearly regular octahedral [Co(H2O)6]2+cations with the CoIIcations on the inversion centre (special position 2a), Rb+cations, hydrogen phthalate (Hpht−) anions and disordered water molecules. The Rb+cation is surrounded by nine O atoms from Hpht−anions and water molecules, with a strongly deformed pentagonal–bipyramidal geometry and one apex split into three positions. The crystal packing is governed by numerous hydrogen bonds involving all water molecules and Hpht−anions. In this way, layers parallel to theabplane are formed, with the aromatic rings of the Hpht−anions esentially directed along thecaxis. While Hpht−anions form the outer part of the layers, disordered water molecules and Rb+cations alternate with [Co(H2O)6]2+cations in the inner parts. The only interactions between the layers are van der Waals forces between the atoms of the aromatic rings. A search of the Cambridge Structural Database for coordination modes and types of hydrogen-bonding interaction of the Hpht−anion showed that, when uncoordinated Hpht−anions are present, compounds with intermolecular hydrogen bonds are more numerous than compounds with intramolecular hydrogen bonds. For coordinated Hpht−anions, chelating and bridging anions are almost equally common, while monodentate anions are relatively scarce. The same coordination modes appear for Hpht−anions with or without intramolecular hydrogen bonds, although intramolecular hydrogen bonds are less common.

catena-Poly[[diaquazinc(II)]-μ-2,2′-bipyridine-3,3′-dicarboxyato-κ4 N,N′:O,O′]

2007 ◽  
Vol 63 (11) ◽  
pp. m2857-m2857
Author(s):  
Lu Lu ◽  
Jun Wang ◽  
Bao-Zhong Zhao ◽  
Feng-Chun Zeng
Keyword(s):  
Hydrogen Bonds ◽  
Equatorial Plane ◽  
Title Complex ◽  
Water Molecules ◽  
One Dimensional ◽  
Twofold Axis ◽  
Bridging Ligand ◽  
Distorted Octahedral ◽  
Coordinated Water ◽  
Zn Ions

In the title complex, [Zn(C12H6N2O4)(H2O)2] n , the Zn atom, located on a twofold axis, is six-coordinated in a distorted octahedral arrangement, with two N atoms and two O atoms of two symmetry-related 2,2′-bipyridine-3,3′-dicarboxyate (dcbp) ligands located in the equatorial plane, while the two O atoms of the water molecules occupy the axial positions. The dcbp ligand acts as a bridging ligand, linking adjacent Zn ions and forming a one-dimensional infinite chain parallel to the b axis. O—H...O hydrogen bonds involving the coordinated water molecules connect adjacent chains to form layers parallel to the (001) plane.

scholarly journals X-ray evidence for metal–N-7 bonding in a hydrated manganese derivative of guanosine 5′-monophosphate

1974 ◽  
Vol 139 (3) ◽  
pp. 791-792 ◽  
Author(s):  
Patrice de Meester ◽  
David M. L. Goodgame ◽  
T. Jeffrey Jones ◽  
Andrzej C. Skapski
Keyword(s):  
Hydrogen Bonds ◽  
Single Crystal ◽  
Manganese Atom ◽  
Metal Phosphate ◽  
Water Molecules ◽  
Intramolecular Hydrogen Bonds ◽  
X Ray ◽  
Nucleotide Base ◽  
Phosphate Bonding ◽  
Intramolecular Hydrogen

Single-crystal X-ray studies of a manganese(II) derivative of guanosine 5′-monophosphate, [Mn(5′-GMP)(H2O)5],3H2O, have shown that it is isostructural with its nickel analogue. The manganese atom therefore is bonded to five water molecules with the remaining octahedral co-ordination site being occupied by N-7 of the nucleotide base. No direct metal–phosphate bonding is involved, but there are structure-stabilizing intramolecular hydrogen bonds between two phosphate oxygen atoms and co-ordinated water molecules.

scholarly journals Crystal structure of bis(acetato-κO)diaqua(2,2′-bipyridine-κ2N,N′)manganese(II)

2014 ◽  
Vol 70 (9) ◽  
pp. m326-m327 ◽  
Author(s):  
Natarajan Saravanan ◽  
Parasuraman Selvam
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Metal Ion ◽  
Water Molecules ◽  
Intramolecular Hydrogen Bonds ◽  
Distorted Octahedral Environment ◽  
Octahedral Environment ◽  
Π Stacking ◽  
Distorted Octahedral ◽  
Intramolecular Hydrogen

In the title monomeric manganese(II) complex, [Mn(CH3COO)2(C10H8N2)(H2O)2], the metal ion is coordinated by a bidentate 2,2′-bipyridine (bpy) ligand, two water molecules and two axial acetate anions, resulting in a highly distorted octahedral environment. The aqua ligands are stabilized by the formation of strong intramolecular hydrogen bonds with the uncoordinated acetate O atoms, giving rise to pseudo-bridging arrangement of the terminal acetate groups. In the crystal, the molecules form [010] zigzag chainsviaO—H...O hydrogen bonds involving the aqua ligands and acetate O atoms. Further, the water and bpy ligands aretransto each other, and are arranged in an off-set fashion showing intermolecular π–π stacking between nearly parallel bipy rings, the centroid–centroid separations being 3.8147 (12) and 3.9305 (13) Å.

Peculiar hydrogen bonding behaviour of water molecules inside the aqueous nanochannels of lyotropic liquid crystals

2020 ◽  
Vol 22 (11) ◽  
pp. 6210-6221
Author(s):  
Konoya Das ◽  
Subrahmanyam Sappati ◽  
Partha Hazra
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystals ◽  
Hydrogen Bonds ◽  
Lyotropic Liquid Crystals ◽  
Water Molecules ◽  
Probe Molecules ◽  
Intramolecular Hydrogen Bonds ◽  
Target Probe ◽  
Intramolecular Hydrogen

The hydrogen bonding abilities of the LLC water molecules and their effects on intramolecular hydrogen bonds of the target probe molecules.

Controlling emissive properties by intramolecular hydrogen bonds: alkyl and aryl meso‐substituted porphycenes

2021 ◽  
Author(s):  
Jacek Waluk ◽  
Arkadiusz Listkowski ◽  
Natalia Masiera ◽  
Michał Kijak ◽  
Roman Luboradzki ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bonds ◽  
Intramolecular Hydrogen

Energies of intramolecular hydrogen bonds in some alcohols

1974 ◽  
Vol 20 (3) ◽  
pp. 414-415
Author(s):  
Ya. A. Shuster ◽  
V. A. Granzhan ◽  
P. M. Zaitsev
Keyword(s):  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bonds ◽  
Intramolecular Hydrogen

Hydrogen bonds in derivatives of N-substituted N’-benzoyl- and N’-(2-chlorobenzoyl)thiourea

1991 ◽  
Vol 56 (4) ◽  
pp. 880-885 ◽  
Author(s):  
Oľga Hritzová ◽  
Dušan Koščík
Keyword(s):  
Hydrogen Bonds ◽  
Spectral Studies ◽  
Intramolecular Hydrogen Bonds ◽  
Tautomeric Forms ◽  
Intramolecular Hydrogen ◽  
Derivatives Of

Intramolecular hydrogen bonds of the N-H···O=C type have been detected in the derivatives of N-substituted N’-benzoyl- and N’-(2-chlorobenzoyl)thiourea on the basis of IR spectral studies. The title compounds can exist in two tautomeric forms.

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