Synthesis, crystal structures, and spectroscopic characterization of the neutral monomeric tetrahedral [M(Diap)2(OAc)2]·H2O complexes (M=Zn,Cd; Diap=1,3-diazepane-2-thione; OAc=acetate) with N–H⋯O and O–H⋯O intra- and intermolecular hydrogen bonding interactions

2007 ◽  
Vol 360 (9) ◽  
pp. 2967-2972 ◽  
Author(s):  
Azizolla Beheshti ◽  
William Clegg ◽  
Sophie H. Dale ◽  
Reza Hyvadi
Keyword(s):  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Spectroscopic Characterization ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interactions

scholarly journals Crystal structures of chlorido[dihydroxybis(1-iminoethoxy)]arsanido-κ3 N,As,N′]platinum(II) and of a polymorph of chlorido[dihydroxybis(1-iminopropoxy)arsanido-κ3 N,As,N′]platinum(II)

2020 ◽  
Vol 76 (2) ◽  
pp. 180-185
Author(s):  
Nina R. Marogoa ◽  
D.V. Kama ◽  
Hendrik G. Visser ◽  
M. Schutte-Smith
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Three Dimensional ◽  
Donor Ligands ◽  
Intermolecular Hydrogen Bonding ◽  
Π Interactions ◽  
Hydrogen Bonding Interactions ◽  
Oxygen Donor ◽  
Dimensional Network

Each central platinum(II) atom in the crystal structures of chlorido[dihydroxybis(1-iminoethoxy)arsanido-κ3 N,As,N′]platinum(II), [Pt(C4H10AsN2O4)Cl] (1), and of chlorido[dihydroxybis(1-iminopropoxy)arsanido-κ3 N,As,N′]platinum(II), [Pt(C6H14AsN2O4)Cl] (2), is coordinated by two nitrogen donor atoms, a chlorido ligand and to arsenic, which, in turn, is coordinated by two oxygen donor ligands, two hydroxyl ligands and the platinum(II) atom. The square-planar and trigonal–bipyramidal coordination environments around platinum and arsenic, respectively, are significantly distorted with the largest outliers being 173.90 (13) and 106.98 (14)° for platinum and arsenic in (1), and 173.20 (14)° and 94.20 (9)° for (2), respectively. One intramolecular and four classical intermolecular hydrogen-bonding interactions are observed in the crystal structure of (1), which give rise to an infinite three-dimensional network. A similar situation (one intramolecular and four classical intermolecular hydrogen-bonding interactions) is observed in the crystal structure of (2). Various π-interactions are present in (1) between the platinum(II) atom and the centroid of one of the five-membered rings formed by Pt, As, C, N, O with a distance of 3.7225 (7) Å, and between the centroids of five-membered (Pt, As, C, N, O) rings of neighbouring molecules with distances of 3.7456 (4) and 3.7960 (6) Å. Likewise, weak π-interactions are observed in (2) between the platinum(II) atom and the centroid of one of the five-membered rings formed by Pt, As, C, N, O with a distance of 3.8213 (2) Å, as well as between the Cl atom and the centroid of a symmetry-related five-membered ring with a distance of 3.8252 (12) Å. Differences between (2) and the reported polymorph [Miodragović et al. (2013). Angew. Chem. Int. Ed. 52, 10749–10752] are discussed.

scholarly journals Crystallographic and spectroscopic characterization of (R)-O-acetylmandelic acid

2016 ◽  
Vol 72 (7) ◽  
pp. 901-903
Author(s):  
Cady Cirbes ◽  
Joseph M. Tanski
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Mandelic Acid ◽  
Phenylacetic Acid ◽  
Spectroscopic Characterization ◽  
Acid Group ◽  
Intermolecular Hydrogen Bonding ◽  
Carboxylic Acid Group ◽  
Donor Acceptor

The title compound [systematic name: (R)-(−)-2-acetoxy-2-phenylacetic acid], C10H10O4, is a resolved chiral ester derivative of mandelic acid. The compound contains an acetate group and a carboxylic acid group, which engage in intermolecular hydrogen bonding, forming chains extending parallel to [001] with a short donor–acceptor hydrogen-bonding distance of 2.676 (2) Å.

scholarly journals Supramolecular assembly and spectroscopic characterization of indolenine–barbituric acid zwitterions

2021 ◽  
Author(s):  
Abdul Qaiyum Ramle ◽  
Edward R. T. Tiekink ◽  
Chee Chin Fei ◽  
Nurhidayatullaili Muhd. Julkapli ◽  
Wan Jefrey Basirun
Keyword(s):  
Hydrogen Bonding ◽  
Barbituric Acid ◽  
Supramolecular Assembly ◽  
Spectroscopic Characterization ◽  
Intermolecular Hydrogen Bonding ◽  
Hypsochromic Shift ◽  
Protic Solvents ◽  
Supramolecular Aggregation

The intermolecular hydrogen bonding of barbiturates assists in the supramolecular aggregation and a hypsochromic shift is shown in protic solvents.

scholarly journals Crystallographic and spectroscopic characterization of 5-chloropyridine-2,3-diamine

2017 ◽  
Vol 73 (8) ◽  
pp. 1213-1217
Author(s):  
Aron Sulovari ◽  
Joseph M. Tanski
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Intramolecular Interaction ◽  
Spectroscopic Characterization ◽  
Intermolecular Hydrogen Bonding ◽  
Amino Groups ◽  
Hydrogen Atoms ◽  
Face To Face ◽  
Compound C

The two ortho-amino groups of the title compound, C5H6ClN3, twist out of the plane of the molecule to minimize intramolecular interaction between the amino hydrogen atoms. In the crystal, the amino groups and the pyridine N atom engage in intermolecular hydrogen bonding. The molecules pack into spiral hydrogen-bonded columns with offset face-to-face π-stacking.

scholarly journals A comparison of 3,4,6a,7,10,10a-hexahydro-7,10-epoxypyrimido[2,1-a]isoindol-6(2H)-one and 2-(2-aminoethyl)-3a,4,7,7a-tetrahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione: structural and reactivity differences of two homologous tricyclic imides

2013 ◽  
Vol 69 (6) ◽  
pp. 638-641 ◽  
Author(s):  
Lauren A. Mitchell ◽  
Julie M. Stanley ◽  
Liliana Espinosa De Hoyos ◽  
Bradley J. Holliday
Keyword(s):  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Intermolecular Hydrogen Bonding ◽  
Asymmetric Unit ◽  
Hydrogen Bonding Interactions

The crystal structures of 3,4,6a,7,10,10a-hexahydro-7,10-epoxypyrimido[2,1-a]isoindol-6(2H)-one, C11H12N2O2, and 2-(2-aminoethyl)-3a,4,7,7a-tetrahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, C10H12N2O3, two tricyclic imides, show one and two molecules in the asymmetric unit, respectively. Intermolecular hydrogen-bonding interactions are observed in both compounds.

scholarly journals Crystal structures of [Cu(phen)(H2O)3(MF6)]·H2O (M = Ti, Zr, Hf) and [Cu(phen)(H2O)2F]2[HfF6]·H2O

2021 ◽  
Vol 77 (2) ◽  
pp. 165-170
Author(s):  
Matthew L. Nisbet ◽  
Kenneth R. Poeppelmeier
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Intermolecular Hydrogen Bonding ◽  
Intermolecular Hydrogen Bonds ◽  
Early Transition Metal ◽  
Hydrogen Bonding Interactions ◽  
Bimetallic Compounds ◽  
Molecular Compounds ◽  
Molecular Salt

The crystal structures of three bridged bimetallic molecular compounds, namely, triaqua-2κ3 O-μ-fluorido-pentafluorido-1κ5 F-(1,10-phenanthroline-2κ2 N,N′)copper(II)titanium(IV) monohydrate, [Cu(TiF6)(phen)(H2O)3]·H2O (phen is 1,10-phenanthroline, C12H8N2), (I), triaqua-2κ3 O-μ-fluorido-pentafluorido-1κ5 F-(1,10-phenanthroline-2κ2 N,N′)copper(II)zirconium(IV) monohydrate, [Cu(ZrF6)(phen)(H2O)3]·H2O, (II), and triaqua-2κ3 O-μ-fluorido-pentafluorido-1κ5 F-(1,10-phenanthroline-2κ2 N,N′)copper(II)hafnium(IV) monohydrate, [Cu(HfF6)(phen)(H2O)3]·H2O, (III), and one molecular salt, bis[diaquafluorido(1,10-phenanthroline-κ2 N,N′)copper(II)] hexafluoridohafnate(IV) dihydrate, [CuF(phen)(H2O)2]2[HfF6]·2H2O, (IV), are reported. The bridged bimetallic compounds adopt Λ-shaped configurations, with the octahedrally coordinated copper(II) center linked to the fluorinated early transition metal via a fluoride linkage. The extended structures of these Λ-shaped compounds are organized through both intra- and intermolecular hydrogen bonds and intermolecular π–π stacking. The salt compound [Cu(phen)(H2O)2F]2[HfF6]·H2O displays an isolated square-pyramidal Cu(phen)(H2O)2F+ complex linked to other cationic complexes and isolated HfF6 2− anions through intermolecular hydrogen-bonding interactions.

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