N-(4-Chloro­phen­yl)succinamic acid

In the title compound, C10H10ClNO3, the conformation of the amide O atom and the carbonyl O atom of the acid segment are anti to each other and further, they are anti to the H atoms of their adjacent –CH2 groups. The C=O and O—H bonds of the acid group are in the syn position relative to each other. In the crystal, mol­ecules are packed into infinite chains through inter­molecular N—H⋯O and O—H⋯O hydrogen bonds

ANOMALOUS GAUGE BOSON INTERACTIONS

We discuss the direct measurement of the trilinear vector boson couplings in present and future collider experiments. The major goals of such experiments will be the confirmation of the Standard Model (SM) predictions and the search for signals of new physics. We review our current theoretical understanding of anomalous trilinear gauge boson self-interactions. If the energy scale of the new physics is $\sim 1$ TeV, these low energy anomalous couplings are expected to be no larger than ${\cal O}(10^{-2})$. Constraints from high precision measurements at LEP and low energy charged and neutral current processes are critically reviewed.Comment: 53 pages with 17 embedded figures, LaTeX, uses axodraw.sty, figures available on request. The complete paper, is available at ftp://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-871.ps.Z or http://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-871.ps.Z Summary of the DPF Working Subgroup on Anomalous Gauge Boson Interactions of the DPF Long Range Planning Stud

N-(2-Chloro­phen­yl)succinamic acid

The conformations of the N—H and C=O bonds in the amide segment of the structure of the title compound {systematic name: 3-[(2-chloro­phen­yl)amino­carbon­yl]propionic acid}, C10H10ClNO3, are trans to each other, while the conformation of the amide H atom is syn to the ortho-chloro group in the benzene ring. Further, the conformations of the amide O atom and the carbonyl O atom of the ester segment are also trans to the H atoms attached to the adjacent C atoms. In the crystal structure, mol­ecules are packed into infinite chains through inter­molecular N—H⋯O and O—H⋯O hydrogen bonds

2,4-Dimethyl­phenyl benzoate

The crystal structure of the title compound (24DMPBA), C15H14O2, resembles those of 4-methyl­phenyl benzoate, 2,3-dimethyl­phenyl benzoate and other aryl benzoates, with similar bond parameters. The central –O—C—O– group in 24DMPBA makes dihedral angles of 85.81 (5) and 5.71 (13)°, respectively, with the benzoyl and phenyl rings, while the two aromatic rings form a dihedral angle of 80.25 (5)°. The mol­ecules are packed with their axes parallel to the a-axis direction

Experimental measurement of stress at a four-domain junction in lead zirconate titanate

A junction between two lamellar bands of ferroelectric domains in a lead zirconate titanate (PZT) ceramic is analysed using Kikuchi diffraction patterns in the transmission electron microscope. Indexing of the diffraction patterns allowed the determination of the 3D relative orientation of the 4 different domains at the junction and thus the characterisation of the domain boundaries. The local c/a ratio could also be determined from the misorientations at the domain boundaries. Analysis of the data showed that large stresses were concentrated at the junction, and that this is inevitable at such band junctions. Such stress concentrations could act as nuclei for cracking of the ceramic under additional loading in service, perhaps particularly as a consequence of extended electromechanical cycling. Moreover, the stresses would increase with increasing c/a making the issues all the more serious for Ti-rich compositions having larger c/a ratios

2-Methyl­phenyl 4-methyl­benzoate

The conformation of the C=O bond in the title compound 2MP4MBA, C15H14O2, is anti to the ortho-methyl group in the phen­oxy ring. The bond parameters in 2MP4MBA are similar to those in 3-methyl­phenyl 4-methyl­benzoate (3MP4MBA), 4-methyl­phenyl 4-methyl­benzoate (4MP4MBA) and other aryl benzoates. The dihedral angle between the two aromatic rings in 2MP4MBA is 73.04 (8)°

3-Chloro­phenyl 4-methyl­benzoate

The crystal structure of the title compound 3CP4MBA, C14H11ClO2, resembles those of 3-methyl­phenyl 4-methyl­benzoate (3MP4MBA), 4-methyl­phenyl 4-methyl­benzoate (4MP4MBA), 4-methyl­phenyl 4-chloro­benzoate (4CP4MBA) and other aryl benzoates with similar bond parameters. The dihedral angle between the benzene rings in 3CP4MBA is 71.75 (7)°, compared with 56.82 (7)° in 3MP4MBA and 63.57 (5)° in 4MP4MBA. In the crystal structure, the mol­ecules are aligned with their long axis approximately along the [101] direction and stacked along the c axis

2,3-Dimethyl­phenyl benzoate

The structure of the title compound (23DMPBA), C15H14O2, resembles those of phenyl benzoate (PBA), 3-methyl­phenyl benzoate (3MePBA), 2,6-dichloro­phenyl benzoate (26DC­PBA) and other aryl benzoates, with similar bond parameters. The dihedral angle between the benzene and benzoyl rings in 23DMPBA is 87.36 (6)°, compared with values of 55.7° in PBA, 79.61 (6)° in 3MePBA and 75.75 (10)° in 26DCPBA. The mol­ecules in 23DMPBA are packed into a chain-like structure in the direction of the a axis

Methyl N-(2,3-dichloro­phen­yl)succinamate

The asymmetric unit of the title compound, C11H11Cl2NO3, contains two independent mol­ecules. In both the molecules, the H atoms of the adjacent –CH2 groups of the acid segments orient themselves away from the amide O and the carbonyl O atoms. The C=O and O—CH3 bonds of the ester group are in syn positions with respect to each other. In the crystal, the mol­ecules are linked into infinite chains through inter­molecular N—H⋯O hydrogen bonds