نتایج جستجو برای: intermolecular hydrogen bonding

تعداد نتایج: 179083  

Journal: :Physical chemistry chemical physics : PCCP 2017
G Galeotti M Ebrahimi J Lipton-Duffin J M MacLeod S Rondeau-Gagné J-F Morin F Rosei

The two-dimensional (2D) surface-directed self-assembly of dibenzonitrile diacetylene (DBDA) on Ag(111) under ultrahigh vacuum (UHV) conditions was investigated by combining scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS) and theoretical simulations based on density functional theory (DFT) calculations. The molecule consists of two benzonitrile groups (-C6H4-C[triple...

The character of the intermolecular interactions in Cl2-HX (X =F, Cl and Br) complexes has been investigated by means of the second-order Möller–Plesset perturbation theory (MP2) and the density functional theory (DFT) calculations. The results show that there are two types of lowest interaction potential equilibrium structures in the interactions between Cl2 and HX: X∙∙∙Cl type geometry and hy...

Journal: :physical chemistry research 2013
hossein roohi e. ahmadepour

the structural and energetic characteristics of o3–h2o complexes have been investigated by means of b3lyp, mp2, mp4(sdtq), ccsd(t) and qcisd(t) methods in conjunction with the aug-cc-pvdz and aug-cc-pvtz basis sets. six conformers were found for the o3–h2o complex. two different intermolecular interactions were expected to participate in the formation of complexes, namely conventional o∙∙∙h hyd...

Journal: :Acta crystallographica. Section C, Structural chemistry 2017
Andrzej Okuniewski Damian Rosiak Jarosław Chojnacki Barbara Becker

1-Benzoylthioureas contain both carbonyl and thiocarbonyl functional groups and are of interest for their biological activity, metal coordination ability and involvement in hydrogen-bond formation. Two novel 1-benzoylthiourea derivatives, namely 1-benzoyl-3-(3,4-dimethoxyphenyl)thiourea, C16H16N2O3S, (I), and 1-benzoyl-3-(2-hydroxypropyl)thiourea, C11H14N2O2S, (II), have been synthesized and ch...

2015
Volker Kahlenberg Thomas Gelbrich Richard Tessadri Frederik Klauser

Single crystals of cis-[Pt(NO2)2(NH3)2], were obtained by means of hypersaturation directly out of a plating electrolyte. The square-planar coordination environment of the divalent Pt atom is formed by four N atoms belonging to two ammine and two monodentate nitrite ligands. The ligands adopt a cis configuration. The crystal structure contains stacks of close-packed molecules which run parallel...

2013
Ameni Brahmia Taicir Ben Ayed Rached Ben Hassen

The title compound is a new amino-coumarin derivative, C17H13NO4, and was synthesized by the condensation of 2-amino-phenol and 3-acetyl-4-hy-droxy-coumarin. An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, the molecules are linked into chains extending in the [010] direction by O-H⋯O hydrogen bonds. There is also a π-π stacking inter-action between the bicyc...

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