INTRAMOLECULAR HYDROGEN BONDING
Pyridin 2 yl Guanidine Derivatives: Conformational Control Induced by Intramolecular Hydrogen Bonding Interactions
... X-ray crystal structures obtained for two of the 1-pyridin-2-ylguanidinium chloride salts 3d and 3e confirm the existence of the syn conformation and demonstrate a co-planar arrangement [r] ...
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5,5 Dimethyl 3 (5 methylisoxazol 3 yl)cyclohex 2 enone
... both intramolecular hydrogen bonding (C2B···N2B and N2A···C2A) and intermolecular hydrogen bonding with the carbonyl O atom (atom O1B and the isoxazole H atom on atom C10A, and the H ...
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2 Acetylphenylboronic acid monohydrate
... no intramolecular hydrogen bonding in (I), in contrast to that exhibited in the structure of anhydrous 2-formylphenyl- boronic acid (Scouten et ...intermolecular hydrogen bonding, ...
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Benzoin thiosemicarbazone
... The molecular structure of (I), together with the atom- labelling scheme and the intramolecular hydrogen bonding, is shown in Fig. 1. The thiosemicarbazone moiety shows an E configuration about both ...
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Dipentyl 2,6 diaminobenzo[1,2 b:4,5 b′]difuran 3,7 dicarboxylate
... by intramolecular N—H···O=C hydrogen bonds (Table ...the intramolecular hydrogen bonding involving the amino group and ester carbonyl helps to lock the syn conformation of ester with ...
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Correlation Between Parameters Related to Intramolecular Hydrogen Bond Strength and Hammett Constant in Para Substituted Benzoylacetone: A Theoretical and Experimental Study
... According to Table 2, the O…O distance in 4 form of X-BA is shorter than that in 2 form, therefore the IHB strength in X-BA-4 is stronger than that in X-BA-2. This results is agreement to the other parameters relate to ...
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Multicentered hydrogen bonding in 1 [(1 deoxy β D fructopyranos 1 yl)azaniumyl]cyclopentanecarboxylate (`D fructose cycloleucine')
... The ammonium group and all but one (O8) oxygen atoms are involved in intramolecular hydrogen bonding (Table 2). At the centre of this system are heteroatom contacts between the conjugated ...
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Structural aspects of ozonides on lymphoma cell viability: Part B
... through intramolecular hydrogen ...carbon, intramolecular hydrogen bonding involving the amine or the presence of the amide functional group contribute the most to the low anti-lymphoma ...
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Synthesis of Nano-Cellulose from Okra Fibre and FTIR as Well as Morphological Studies on It
... and intramolecular hydrogen bonding [25] of raw okra fiber, alkali treated fiber (α-Cellulose), bleached fiber and nano-cellulosic fiber because FTIR is the most frequent technique to study ...
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Diaquabis(N,N diethylnicotinamide)bis(4 nitrobenzoato)zinc(II)
... . Intramolecular hydrogen bonding links each aqua ligand with an uncoordinated carboxylate O atom, and intermolecular hydrogen bonding between aqua ligands and the carbonyl O atoms of ...
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1 [4 (3,5 Dimethoxy 2 methylphenoxy) 2,6 dihydroxy 3 methylphenyl]ethanone
... an intramolecular Smiles rearrangement (Elix et ...an intramolecular Smiles rearrangement of the prepared depsides have also been studied extensively (Elix & Jenie, 1989; Elix et ...predicted ...
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Templated polymerizations on solid supports mediated by complementary nucleoside interactions
... The controlled, sequence-specific replication of DNA using a template-directed mechanism is central to life. 1 The apparent simplicity of this templating process has inspired synthetic 2–6 and semi-synthetic ...
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Synthesis and Crystal Structure of the Hydrogen Bromide Salt of 1,4,7,10 Tetrakis(2 ((4 methoxy)phenoxy) ethyl) 1,4,7,10 tetraazacyclododecane
... I > 2 σ (I). Corrections for LP factors and semi-empirical absorption were applied based on Sadabs [15]. Unique data (Rint = 0.1233) were used to solve the struc- ture by direct methods with SHELXS-97 program [16]. ...
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L Aspartic acid nitrate–L aspartic acid (1/1)
... O—H···O hydrogen bonding, to form dimers. This hydrogen bond may be termed an asymmetric hydrogen bond, since the H atom is closer to one of the O atoms of the carboxyl group (Olovsson et ...
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A Study of Hydrogen Bonding
... List Illustrations of Figure to follow Title page I Preparation II Block diagram R-20 III Trifluoroacetic IV Chemical of Shift Quinazoline 37 43 acid 45 spectrum Concentration Tetrachlor[r] ...
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(anti Chloridothiosemicabazide κS)bis(triphenylphosphane κP)copper(I) 0 48 hydrate
... N hydrogen bond [graph-set motif S(5)] stabilizes the thiosemicarbazide ligand in its anti conforma- tion, and an intramolecular N—H Cl hydrogen bond between the hydrazine N—H group and the chloride ...
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Hydrogen bonding in creatininium nitrate
... The present structure analysis of creatininium nitrate, (I), was undertaken as part of a more general investigation into the nature of hydrogen bonding between organic bases or amino acids and inorganic ...
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Intramolecular Hydrogen-shift Reactions of Peroxy Radicals
... toward intramolecular hydrogen shifts to the peroxy ...these hydrogen shift reactions results in rate constants that are orders of magnitude larger than for alkyl hydrogens that lack α ...
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catena Poly[[[bis(4 pyridinealdoxime κN1)zinc] μ benzene 1,4 dicarboxylato κ2O1:O4] 4 pyridinealdoxime monosolvate]
... dicarboxylate as a bridging ligand and 4-pyridineoxime (4-pyNOH) as terminal ligands. Two types of 4-pyridinealdoxime are found in the crystal. One is uncoordinated and the other 4-pyNOH coordinates to Zn(II) ion. ...
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Comprehensive Analysis of rsSNPs Associated with Hypertension Using In Silico Bioinformatics Tools
... The charge of the wild-type residue will be lost, and this can cause loss of interactions with other molecules or residues. The wild-type and mutant amino acids differ in size. The mutant residue is smaller, and this ...
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