‘Neutralmolekülcomplexe’—Structural Characterization of Some Adducts of Urea and Thiourea with N,N′-Bidentate Aromatic Bases

2003 ◽  
Vol 56 (12) ◽  
pp. 1249 ◽  
Author(s):  
Paul S. Donnelly ◽  
Brian W. Skelton ◽  
Allan H. White
Keyword(s):  
Hydrogen Bonding ◽  
Structural Characterization ◽  
Molecular Crystal ◽  
Neutral Molecule ◽  
Hydrogen Bonding Interactions

Oepen and Vögtle in 1979 recorded the formation of a number of ‘neutral molecule complexes’ between urea (ur) and/or thiourea (tu) and a number of N,N′-aromatic chelate bases derivative of 2,2′-bipyridine (bpy), motifs now widely utilized in essays in studies of molecular/crystal architecture. The structures are recorded of a number of their adducts, namely (a) bpy/ur (1 : 1), (b) phen/ur (1 : 1), (c) phen/tu (1 : 1), (d) dmp/ur (1 : 1), together with (e) bpy/tu (1 : 1) and (f) a dmp/tu adduct of 1 : 2 stoichiometry (phen = 1,10-phenanthroline; dmp = 2,9-dimethyl-1,10-phenanthroline). Association takes places in all cases by way of hydrogen-bonding interactions between alternating (thio-)urea NH2 groups which form an infinite band with the nitrogen atoms of the aromatic base at the periphery, the base planes quasi-normal to that of the band, as in the archetypical 2,6-lutidine/urea (1 : 1) array, described long ago.

Synthesis and structural characterization of tube-type tetradecavanadates

2018 ◽  
Vol 74 (11) ◽  
pp. 1295-1299 ◽  
Author(s):  
Sho Kuwajima ◽  
Yuta Arai ◽  
Hiromasa Kitajima ◽  
Yuji Kikukawa ◽  
Yoshihito Hayashi
Keyword(s):  
Hydrogen Bonding ◽  
Dimethyl Sulfoxide ◽  
Ammonium Perchlorate ◽  
Structural Characterization ◽  
Equatorial Plane ◽  
Noncovalent Interactions ◽  
Rotation Axes ◽  
Hydrogen Bonding Interactions ◽  
Tube Type

By the reaction of ammonium perchlorate with anion-incorporated bowl-type dodecavanadates, viz. [V12O32(X)]5− [X = N3 − (1), OCN− and NO3 −], tube-type tetradecavanadates, viz. (NH4)7[V14O38(X)] [X = N3 − (2), OCN− (3) and NO3 − (4)] were synthesized. The crystal structures of penta(tetraethylammonium) azidododecavanadate nitromethane monosolvate, (C8H20N)5[V12O32(N3)]·CH3NO2, 1, heptaammonium azidotetradecavanadate dimethyl sulfoxide hexasolvate, (NH4)7[V14O38(N3)]·6C2H6OS, 2, heptaammonium cyanatotetradecavanadate dimethyl sulfoxide hexasolvate, (NH4)7[V14O38(OCN)]·6C2H6OS, 3, and heptaammonium nitratotetradecavanadate dimethyl sulfoxide hexasolvate, (NH4)7[V14O38(NO3)]·6C2H6OS, 4, were determined. The tube consists of two layers of V7 rings with a guest anion at the centre. The distances between the incorporated anions and the nearest V atoms are 3.058 (3), 3.039 (6) and 2.811 (9) Å for 2, 3 and 4, respectively, showing that the incorporated anions are stabilized via noncovalent interactions. Two ammonium cations cap both ends of the tube to stabilize the structures via hydrogen-bonding interactions. Linear OCN− and N3 − anions sit on the twofold rotation axes of the tube frameworks and the triangular plane of the NO3 − anion deviates from the equatorial plane of the tube by ca 30°.

Bioinspired catalysis and bromoperoxidase like activity of a multistimuli-responsive supramolecular metallogel: supramolecular assembly triggered by pi–pi stacking and hydrogen bonding interactions

2020 ◽  
Vol 44 (14) ◽  
pp. 5410-5418 ◽  
Author(s):  
Sunshine Dominic Kurbah ◽  
Ram A. Lal
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Assembly ◽  
Synthesis And Characterization ◽  
Pi Stacking ◽  
Hydrogen Bonding Interactions ◽  
Bromination Reaction ◽  
Oxidative Bromination ◽  
Self Assembled

We report the synthesis and characterization of a new self-assembled VO2-L metallogel. Multi-responsive properties of the gel were also studied and can be used for sensing OH− anions. Bromoperoxidase-like activity of VO2-L metallogel for oxidative bromination reaction was also reported.

Solid-State NMR Spectroscopic Studies of Propylphosphonic Acid Functionalized SBA-15 Mesoporous Silica: Characterization of Hydrogen-Bonding Interactions

2013 ◽  
Vol 2013 (13) ◽  
pp. 2350-2361 ◽  
Author(s):  
Nicolas Bibent ◽  
Thibault Charpentier ◽  
Sabine Devautour-Vinot ◽  
Ahmad Mehdi ◽  
Philippe Gaveau ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Mesoporous Silica ◽  
Solid State Nmr ◽  
Spectroscopic Studies ◽  
Hydrogen Bonding Interactions

Structure and Dynamics of 9(10H)-Acridone and Its Hydrated Clusters. II. Structural Characterization of Hydrogen-Bonding Networks

2000 ◽  
Vol 104 (38) ◽  
pp. 8649-8659 ◽  
Author(s):  
Masaaki Mitsui ◽  
Yasuhiro Ohshima ◽  
Shun-ichi Ishiuchi ◽  
Makoto Sakai ◽  
Masaaki Fujii
Keyword(s):  
Hydrogen Bonding ◽  
Structural Characterization ◽  
Structure And Dynamics ◽  
Hydrogen Bonding Networks ◽  
Hydrated Clusters

Hydrothermal Synthesis and Structure Characterization of a Bi-Capped Keggin Heteropoly Molybdovanadated Derivative

2014 ◽  
Vol 1004-1005 ◽  
pp. 542-545
Author(s):  
Ya Bing Liu ◽  
Li Guang Xiao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Building Blocks ◽  
Crystal Structure Analysis ◽  
Structure Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Supramolecular Networks

A new bi-capped Keggin heteropoly molybdovanadated derivative, [Co (en)3]2[SiMo8V6O42]∙6H2O (1) (en = ethylendiamine) has been hydrothermally synthesized and structurally characterized by the elemental analysis, IR, XPS and single crystal X-ray diffraction. The crystal structure analysis reveals that compound 1 consists of [Co (en)3]2+transition metal coordination fragment and the [SiMo8V6O42]4-building blocks, which are linked together via hydrogen-bonding interactions to form a new 3-D supramolecular networks.

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