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Three structure

Carbon dioxide has a linear structure. The simple double-bonded formula, however, does not fully explain the structure since the measured carbon-oxygen bond lengths are equal but intermediate between those expected for a double and a triple bond. A more accurate representation is, therefore, obtained by considering carbon dioxide as a resonance hybrid of the three structures given below ... [Pg.181]

You will meet all the following isoelectromc species in this text Repeat the previous prob lem for these three structures... [Pg.50]

During the passage of starting materials to products three structural changes take... [Pg.334]

Nucleic acids are acidic substances present m the nuclei of cells and were known long before anyone suspected they were the primary substances involved m the storage transmission and processing of genetic information There are two kinds of nucleic acids ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) Both are complicated biopolymers based on three structural units a carbohydrate a phosphate ester linkage between carbohydrates and a heterocyclic aromatic compound The heterocyclic aro matic compounds are referred to as purine and pyrimidine bases We 11 begin with them and follow the structural thread... [Pg.1155]

In, for example, the planar asymmetric rotor molecule formaldehyde, IT2CO, shown in Figure 5.1(f), it is possible by obtaining, say, and B in the zero-point level and in the V = 1 level of all six vibrations to determine and B. Two rotational constants are insufficient, however, to give the three structural parameters rg(CFI), rg(CO) and (ZFICFI)e necessary for a complete equilibrium structure. It is at this stage that the importance of... [Pg.132]

All three structures have 0(, symmetry and are very similar. The bond length from the central atom to the carbonyl group is slightly different in each compound, and it is longest for the molybdenum substituent. The internal structure of the carbonyl groups is essentially unchanged by substitution. ... [Pg.104]

Compute the energies of the three structures using the SCI-PCM SCRF model and the B3LYP/6-31+G(d) model chemistry. ... [Pg.246]

A further complication arises out of the fact that of all the orientations discussed only one, 5-R-3-Y, does not involve a vicinal relationship between at least two of the three structural features—substituent, side-chain, and heteroatom. In the cases of 4-R- and 5-R-2-Y the problem of vicinal relations appears not too serious, since this relation is equivalent to the problem of the constant ortho substituent. For this situation it was shown that the constant ort u) substituent, i.e., in this case the heteroatom, may make a contribution to the substituent-independent term (logA °) but generally leaves the reaction constant (p) unaffected. Where the substituent, however, is alpha to the heteroatom it appears likely that its electronic structure, and hence its <7-values, may be substantially affected. This appears particularly likely for large substituents and especially for those which can form a hydrogen bond with the heteroatom, such as CO OH. [Pg.237]

When substituent groups are present, they are identified and their positions indicated by numbers in naming the compound. As an example, dimethylcyclohexane has three structures ... [Pg.308]

The cyclohexanediols, -triols, and -tetrols each have three structures (e.g,. 1,2 1,3 and 1,4 for the diols), but the cyclohexanepentols and -hexols and cyclohexanol itself each have only one structure. For these twelve structures a total of fifty diastereomeric forms (28 meso, 22 racemic) is possible. Cyclohexanol and the -diols have long been known,... [Pg.49]

One of the following molecules (a)-(d) is D-erythrose 4-phosphale, an intermediate in the Calvin photosynthetic cycle by which plants incorporate C02 into carbo- hydrates. If D-erythrose 4-phosphate has R stereochemistry at both chirality centers, which of the structures is it Which of the remaining three structures is the enantiomer of D-erythrose 4-phosphate, and which are diastereomers ... [Pg.304]

Resonance can be anticipated when it is possible to write two or more Lewis structures that are about equally plausible. In the case of the nitrate ion, the three structures we have written are equivalent. One could, in principle, write many other structures, but none of them would put eight electrons around each atom. [Pg.170]

Three structural isomers with the molecular formula C3H80. Two of these are alco-... [Pg.597]

As we saw earlier, there are three structural isomers of the alkene C4H8. You may be surprised to learn that there are actually/owr different alkenes with this molecular formula. The extra compound arises because of a phenomenon called geometric isomerism. There are two different geometric isomers of the structure shown on the left, on page 597, under (1). [Pg.598]

The main source of spontaneous polarization in crystals is the relative freedom of cations that fit loosely into the crystal s octahedral cavities. The number of degrees of freedom of the octahedrons affects the spontaneous polarization value and hence influences the crystal s ferroelectric properties. Abrahams and Keve [389] classified ferroelectric materials into three structural categories according to their atomic displacement mechanisms onedimensional, two-dimensional and three-dimensional. [Pg.217]

Figure 11-14 shows the calculated hole density (upper panel) and the electric field (lower panel) as a function of position for the three structures. For the devices with a hole barrier there is a large accumulation of holes at the interface. The spike in the hole density at the interface causes a rapid change in the electric field at the interface. The field in the hole barrier layer is significantly larger than in the hole injection layer. For the 0.5 eV hole barrier structure, almost all of the... [Pg.191]

Figure 11-14. Calculated hole density (upper panel) and electric field (lower panel) as a (unction of position lor the three structures of 1 ijs 11-13 at a 10 V bias. Figure 11-14. Calculated hole density (upper panel) and electric field (lower panel) as a (unction of position lor the three structures of 1 ijs 11-13 at a 10 V bias.
Despite the remarkable progress made, however, the trend shown in the table reveals a fact that cannot be interpreted favorably, at least to this author. In the third quarter of the 20th century, the structures of five different kinds of new luciferins have been determined, whereas, in the last quarter, only three structures, of which two are nearly identical, have been determined. None has been determined in the last decade of the century and thereafter, thus clearly indicating a declining trend, in contradiction to the steady advances in analytical techniques. The greatest cause for the decline seems to be the shift of research interest from chemistry and biochemistry into genetic biotechnology in the past 20 years. [Pg.492]

Fig. 1. The vector-bond diagrams for three structures of the canonical set of fourteen for n — 4, and some of their superposition patterns. Fig. 1. The vector-bond diagrams for three structures of the canonical set of fourteen for n — 4, and some of their superposition patterns.
The three structures of type 4 are unstable for two reasons the presence of electric charges of the same sign on adjacent atoms, and the use by the nitrogen atom of only three orbitals. The contribution of these structures to the normal state of the molecule is accordingly small, and we may take it to be zero. Also, structures of type 3, with a double bond and the transfer of the positive charge to a fluorine atom, are stabilized by the formation of an additional covalent bond with use of the fourth orbital and may accordingly make a greater contribution to the normal state moreover, there is an extra factor 2 for the six structures of type 3 over the three of type 1. [Pg.336]

Equation 1-1 with Ax = 1 for N—F leads to 22.1% ionic character and bond moment 1.46 D, a little above the straight line in Figure 1-3. Let us assume that the contribution of the pure covalent structure 1 has the value of 47.2%, calculated from the value 77.9% for each bond (22.1% ionic character). Since the three structures of type 2 contribute 3 X 2.74% = 8.2%, the structures of type 3 contribute the remainder, 44.6%. This value leads to 14.9% for the amount of double-bond character of each of the bonds in the NF3 molecule, close to the value 15% for CHF3, CC1F3, and C1F3 calculated from the shortening of the bond length,59 which is by 0.05 A. [Pg.336]


See other pages where Three structure is mentioned: [Pg.368]    [Pg.203]    [Pg.492]    [Pg.133]    [Pg.187]    [Pg.70]    [Pg.492]    [Pg.557]    [Pg.449]    [Pg.597]    [Pg.296]    [Pg.122]    [Pg.225]    [Pg.291]    [Pg.870]    [Pg.133]    [Pg.173]    [Pg.243]    [Pg.336]    [Pg.413]    [Pg.414]    [Pg.637]    [Pg.640]    [Pg.665]    [Pg.57]    [Pg.356]    [Pg.400]   


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Activities Structures: Three-Dimensional Works

Approaches to Three-Dimensional Quantitative Structure—Activity Relationships

Aromaticity three dimensional structures

Assembly structure with three levels

Azurin three-dimensional structure

Biopolymers three-dimensional structure

Bond-line structures three-dimensional

Cages and Three Crystal Structure

Catalysis/catalysts three-dimensional structures

Cellulose three-dimensional structure

Chapman-Jouguet detonations three-dimensional structures

Charge compensating cations three-dimensional structures

Chymosin Three-dimensional structure

Computer-generated three-dimensional structure

Conformations 7 Three-dimensional Structure Generation

Crystal structure three-dimensional

Crystal structures, polymers three dimensional

Databases three-dimensional structure searching

Defect structure three ring

Descriptors Based on Three-Dimensional Structure

Descriptors from the Three-Dimensional Structure

Determination of three-dimensional structure

Domains three-dimensional structures

Effects of three-dimensional structures

Electronic structure three postulates

Fold into Complex Three-Dimensional Structures

G protein three-dimensional structures

G three-dimensional structure

GABA three-dimensional structure

Glycosyltransferases three-dimensional structures

Green fluorescent protein three-dimensional structure

Hemoglobins three-dimensional structure

Human growth hormone three-dimensional structure

INDEX three-dimensional structure

Increased-Valence Structures with three 2-Centre Bond Orbitals

Inhibitor binding three-dimensional structure

Inorganic compounds three-dimensional structural databases

Integrins three-dimensional structure

Interleukin three-dimensional structure

Lactoferrin three-dimensional structure

Lipophilicity Fields An Enhancement of Three-Dimensional Quantitative Structure-Activity Relationships

Manganese three-dimensional structures

Methods three-dimensional structure

Methylmalonyl-CoA mutase three-dimensional structure

Molecular representations three-dimensional bond-line structures

Molecular structure The three-dimensional

Molecular structure The three-dimensional arrangement of atoms in a molecule

Molecular structure data, three-dimensional

Molecular structures three-electron atoms

Molecules three-dimensional structure

Monellin three-dimensional structure

Muscle, three-dimensional structure

Nanofibrous structure three-dimensional

Naturally occurring three-dimensional structure

Neutron diffraction studies three-dimensional structure

Nicotinic acetylcholine receptors three-dimensional structure

Notexin Three dimensional structure

Nuclear magnetic resonance three-dimensional structure elucidation

Other Representations of Three-Dimensional Molecular Structure

Papain three-dimensional structure

Penicillopepsin three-dimensional structure

Pepsin three-dimensional structure

Peptides three-dimensional structures

Poly three-phase structure

Polymers three-dimensional structures

Primary and three-dimensional structure

Protein affinity chromatography three-dimensional structures

Protein three-dimensional structure

Proteins integral three-dimensional structure

Proteins three finger structure

QSAR (Quantitative structure-activity three-dimensional

Quantitative structure-activity relationship three-dimensional descriptors

Quantitative structure-activity relationships three-dimensional

RRNA 5S, three-dimensional structure

RRNA three-dimensional structure

Renaturation three-dimensional structure

Resonance structures three atom “allyl” system

Ribosome three-dimensional structure

Ring compounds, structure three-membered

Ring structure three-membered thiirane rings

STRUCTURE OF THREE-MEMBERED RINGS WITH TWO HETEROATOMS

Searching Databases of Three-Dimensional Structures

Self-assembly three-dimensional "spherical" structures

Services three-dimensional protein structures

Sheet forming three-dimensional structure

Sialidase three-dimensional structure

Similarity of Small Molecules Based on Three-Dimensional Structure

Spinel Structure Materials (three dimensional)

Structural and Catalytic Variations within the Three Families of Molybdenum Enzymes

Structural formulae three-dimensional

Structure and Evolution of Section Trajectory Bundles for Three-Component Mixtures

Structure data, three-dimensional

Structure databases three-dimensional

Structure generation three-dimensional, automation

Structure of Three-dimensional Polymeric Networks as Biomaterials

Structure three-dimensional interphase

Structure three-dimensional reinforcement

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Structure with three-dimensional boron networks

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Structure, three-dimensional summary

Structure, three-dimensional topological diagrams

Structure, three-dimensional torsional angles

Structure-activity relationships three-dimensional-ligand-based

Structure-activity relationships three-dimensional-protein-based

Structure-based drug design three-dimensional

Structures Systems Three Dimensional

Substrate inhibition three-dimensional structure

TOPICAL three-dimensional structure

Tetrahedral frameworks Three- or two-dimensional structures

The Protein Data Bank, Three-Dimensional Structures, and Computation

The Three-Dimensional Structure of Insulin

The Three-Dimensional Structure of Protein Molecules in Aqueous Solution

The Three-Dimensional Structures of Proteins

The three-dimensional structure of Bacillus subtilis ferrochelatase

Theoretical and Practical Aspects of Three-Dimensional Quantitative Structure-Activity Relationships

Thioredoxin three-dimensional structure

Three Dimensional (3D) Structure

Three Dimensional Structures Searching

Three Dimensional Structures Searching Willett, Peter

Three Guineas structure

Three Interesting Structures Related to Phenol

Three crystal structures

Three dimension structure generation

Three dimension structure generation program

Three dimensional multilayer structure

Three dimensionally ordered porous structures

Three protein structures

Three structural architecture, natural product

Three structural information

Three-Dimensional Biological Structures

Three-Dimensional Molecular Structure Tables

Three-Dimensional Silicon-oxygen Structures

Three-Dimensional Structure Database Searches

Three-Dimensional Structure Representation

Three-Dimensional Structure Search Methods

Three-Dimensional Structure of Biopolymers

Three-Dimensional Structure of the Protein Portion

Three-Dimensional Structures of Molecules

Three-act dramatic structure

Three-armed structure

Three-dimension structures

Three-dimensional artworks structures

Three-dimensional braided fabric structures

Three-dimensional chemical structures

Three-dimensional electrode structures

Three-dimensional geometry, transition structure

Three-dimensional honeycomb structure

Three-dimensional lattice structure

Three-dimensional lattice structure sphere model

Three-dimensional ligand-based models structure-activity relationships

Three-dimensional model phases structure

Three-dimensional molecular structures

Three-dimensional molecular structures in solution

Three-dimensional molecular structures superconductivity

Three-dimensional periodic structures

Three-dimensional periodic structures fabrication

Three-dimensional polymeric networks structural characteristics

Three-dimensional quantitative structure

Three-dimensional quantitative structure activity relationships conformation

Three-dimensional quantitative structure activity relationships superposition

Three-dimensional quantitative structure-activity relationship drug design

Three-dimensional quantitative structure-activity relationship example

Three-dimensional quantitative structure-activity relationship methods

Three-dimensional quantitative structure-activity relationship models

Three-dimensional spectroscopy protein structure determination

Three-dimensional structural analysis, Patterson

Three-dimensional structural data bases

Three-dimensional structural diagrams

Three-dimensional structural keys

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Three-dimensional structure

Three-dimensional structure determination

Three-dimensional structure determination oligosaccharide

Three-dimensional structure elucidation using

Three-dimensional structure generation

Three-dimensional structure glycans

Three-dimensional structure immunoglobulins

Three-dimensional structure modeling

Three-dimensional structure of individual

Three-dimensional structure of microcystins

Three-dimensional structure of nodularins

Three-dimensional structure of proteins

Three-dimensional structure poly resist

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Three-dimensional structure, relationship

Three-dimensional structure, relationship biological activity

Three-dimensional structure/substructure searching

Three-dimensional structures Bchl b molecules

Three-dimensional structures D-amino acid oxidase

Three-dimensional structures Volume

Three-dimensional structures a-amylase, pancreatic

Three-dimensional structures aconitase

Three-dimensional structures actin filament

Three-dimensional structures adenylate kinase

Three-dimensional structures aldehyde oxido-reductase

Three-dimensional structures and projections

Three-dimensional structures aspartate aminotransferase

Three-dimensional structures aspartate carbamyltransferase

Three-dimensional structures aspartate chemoreceptor

Three-dimensional structures bacteriophage

Three-dimensional structures bacteriorhodopsin

Three-dimensional structures cadherin

Three-dimensional structures calmodulin

Three-dimensional structures carbonic acid anhydrase

Three-dimensional structures carboxypeptidase

Three-dimensional structures catalase

Three-dimensional structures catalytic intermediates

Three-dimensional structures cholera toxin

Three-dimensional structures chymotrypsin

Three-dimensional structures citrate synthase

Three-dimensional structures conotoxin

Three-dimensional structures cutinase

Three-dimensional structures cyclosporin

Three-dimensional structures cytochrome

Three-dimensional structures cytochrome c oxidase

Three-dimensional structures dehydrogenase

Three-dimensional structures dihydrofolate reductase

Three-dimensional structures elastase

Three-dimensional structures enolase

Three-dimensional structures ferredoxin

Three-dimensional structures ferritin

Three-dimensional structures glutathione reductase

Three-dimensional structures glyceraldehyde phosphate

Three-dimensional structures hydrogenase

Three-dimensional structures inorganic compounds

Three-dimensional structures insulin

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Three-dimensional structures isomers

Three-dimensional structures lysozyme

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Three-dimensional structures pectate lyase

Three-dimensional structures plastocyanin

Three-dimensional structures projections

Three-dimensional structures pyruvate dehydrogenase

Three-dimensional structures rhinovirus

Three-dimensional structures subtilisin

Three-dimensional structures tissue factor

Three-dimensional structures trypsin

Three-dimensional structures tubulin

Three-dimensional structures vanadium phosphates

Three-dimensional structures virus

Three-dimensional structures with zinc finger protein

Three-dimensional structures, animating

Three-dimensional structures, drawing

Three-dimensional structures, how

Three-dimensional textile structures

Three-dimentional structure

Three-layer polymer structure

Three-layer structure, formation with

Three-phase foam structure

Unknown Three-Dimensional Structures

Watson-Crick three-dimensional structure

X-ray diffraction Three-dimensional structures

Xylose three dimensional structure

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