Mössbauer spectra and electric dipole moments of organotin(IV) complexes with organic ligands

1970 ◽  
Vol 48 (11) ◽  
pp. 1677-1681 ◽  
Author(s):  
F. Patricia Mullins
Keyword(s):  
Electric Dipole ◽  
Mössbauer Spectra ◽  
Dipole Moments ◽  
Organic Ligands ◽  
Type I ◽  
Type Ii ◽  
Octahedral Structure ◽  
Bond Polarity ◽  
Mossbauer Spectra ◽  
Infrared Data

Mössbauer spectra, electric dipole moment, and infrared data are reported for several complexes of the type (i) RSnX3(AA) and (ii) RSnX(AB)2 (where R = C4H9, C6H5; X = Cl, NCS; AA = α,α′-dipyridyl, o-phenanthroline, 8-aminoquinoline; AB = oxinate, 2-pyridinethiol 1-oxide). Quadrupole splittings and dipole moments indicate a similar octahedral structure is present in all the complexes studied; in type (i) two X groups are trans and in type (ii) the R and X groups are cis to each other. Isomer shifts reveal an order of bond polarity Sn—O ≈ Sn—NCS > Sn—Cl > Sn—S.

Mössbauer Spectra and Electric Dipole Moments of Organotin(IV) Complexes with Monodentate Donor Ligands

1971 ◽  
Vol 49 (16) ◽  
pp. 2719-2725 ◽  
Author(s):  
F. Patricia Mullins
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Mössbauer Spectra ◽  
Dipole Moments ◽  
Donor Ligands ◽  
Electric Dipole Moments ◽  
Mossbauer Spectra ◽  
Trigonal Bipyramidal ◽  
Cl Atoms

Mössbauer spectra and electric dipole moment data are reported for R2SnCl2 and RSnCl3 complexes with Y type ligands where R = C4H9, C6H5 and Y = Ph3PO, Ph3AsO, Bu3PO, and Ph3P. Quadrupole splittings and dipole moments are consistent with trans C—Sn—C bonds in the R2SnQ2Y2 complexes. In the trigonal bipyramidal Ph2SnCl2Y complexes, the two phenyl groups are assumed to be in equatorial positions. Data for the RSnCl3Y2 complexes suggest that in BuSnCl3(Ph3AsO)2 and BuSnCl3-(Ph3P)2 two Cl atoms are trans and that in BuSnCl3(Ph3PO)2 and PhSnCl3(Ph3PO)2 the three Cl atoms are cis.

scholarly journals Studies of La- and Pr-driven reverse distortion of FeO6 octahedral structure, magnetic properties and hyperfine interaction of BiFeO3 powder

RSC Advances ◽  
2018 ◽  
Vol 8 (22) ◽  
pp. 12060-12068 ◽  
Author(s):  
RenZheng Xiao ◽  
Tao Hu ◽  
XianBao Yuan ◽  
JianJun Zhou ◽  
XiaoQiang Ma ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Hyperfine Interaction ◽  
Mössbauer Spectra ◽  
Octahedral Structure ◽  
Mossbauer Spectra

Mössbauer spectra of the Bi1−x−yLaxPryFeO3 (x = 0 and 0.05; y = 0, 0.10, 0.15 and 0.20) (BLPFO) powders.

scholarly journals Lepton electric dipole moments in supersymmetric type II seesaw model

2010 ◽  
Vol 687 (4-5) ◽  
pp. 349-354
Author(s):  
Toru Goto ◽  
Takayuki Kubo ◽  
Yasuhiro Okada
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
Type Ii ◽  
Electric Dipole Moments ◽  
Seesaw Model

NEUTRINOS, LEPTON FLAVOR AND CP VIOLATION IN A PREDICTIVE SO(10) MODEL

2005 ◽  
Vol 20 (06) ◽  
pp. 1180-1187 ◽  
Author(s):  
B. DUTTA ◽  
Y. MIMURA ◽  
R. N. MOHAPATRA
Keyword(s):  
Cp Violation ◽  
Dipole Moments ◽  
Mass Difference ◽  
Neutrino Masses ◽  
Type I ◽  
Type Ii ◽  
Lepton Flavor Violation ◽  
Solar Mass ◽  
Lepton Flavor ◽  
Flavor Violation

A minimal supersymmetric SO (10) model with one 10 and one 126 Higgs superfield predict all neutrino mixings as well as the solar mass difference squared in agreement with observations. However, the CKM CP phase is constrained to be in the second or third quadrant requiring a significant non-CKM component to CP violation to explain observations. We revisit this issue using type I and II seesaw formula for neutrino masses show that the addition of a nonrenormalizable term restores compatibility with neutrino data and CKM CP violation in both cases. We further find that the MSSM parameter tan β≥30 in the type I model and lepton flavor violation and lepton electric dipole moments are accessible to proposed experiments in both type I and type II models. We also discuss the unification of the gauge couplings in type I model which requires an intermediate scale.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

Labelling of non-A, non-B hepatitis infected chimpanzee hepatocytes with nuclease-gold conjugates

1984 ◽  
Vol 42 ◽  
pp. 250-251
Author(s):  
G. D. Gagne ◽  
M. F. Miller ◽  
D. A. Peterson
Keyword(s):  
Endoplasmic Reticulum ◽  
Experimental Infection ◽  
Uranyl Acetate ◽  
Type I ◽  
Cellular Injury ◽  
Type Ii ◽  
Tubular Structures ◽  
Type Iii ◽  
Type Iv ◽  
Infected Chimpanzee

Experimental infection of chimpanzees with non-A, non-B hepatitis (NANB) or with delta agent hepatitis results in the appearance of characteristic cytoplasmic alterations in the hepatocytes. These alterations include spongelike inclusions (Type I), attached convoluted membranes (Type II), tubular structures (Type III), and microtubular aggregates (Type IV) (Fig. 1). Type I, II and III structures are, by association, believed to be derived from endoplasmic reticulum and may be morphogenetically related. Type IV structures are generally observed free in the cytoplasm but sometimes in the vicinity of type III structures. It is not known whether these structures are somehow involved in the replication and/or assembly of the putative NANB virus or whether they are simply nonspecific responses to cellular injury. When treated with uranyl acetate, type I, II and III structures stain intensely as if they might contain nucleic acids. If these structures do correspond to intermediates in the replication of a virus, one might expect them to contain DNA or RNA and the present study was undertaken to explore this possibility.

Comparative surface and ultrastructural views of methylotrophic bacteria by TEM, STEM, SE, and freeze-etch electron microscopy.

1987 ◽  
Vol 45 ◽  
pp. 792-793
Author(s):  
T.A. Fassel ◽  
M.J. Schaller ◽  
M.E. Lidstrom ◽  
C.C. Remsen
Keyword(s):  
Cytoplasmic Membrane ◽  
Structural Features ◽  
Methylotrophic Bacteria ◽  
Type I ◽  
Type Ii ◽  
Membrane Complex ◽  
Oxidation Of Methane ◽  
Methane Oxidizing Bacteria ◽  
Wall Structures ◽  
Methylomonas Albus

Methylotrophic bacteria play an Important role in the environment in the oxidation of methane and methanol. Extensive intracytoplasmic membranes (ICM) have been associated with the oxidation processes in methylotrophs and chemolithotrophic bacteria. Classification on the basis of ICM arrangement distinguishes 2 types of methylotrophs. Bundles or vesicular stacks of ICM located away from the cytoplasmic membrane and extending into the cytoplasm are present in Type I methylotrophs. In Type II methylotrophs, the ICM form pairs of peripheral membranes located parallel to the cytoplasmic membrane. Complex cell wall structures of tightly packed cup-shaped subunits have been described in strains of marine and freshwater phototrophic sulfur bacteria and several strains of methane oxidizing bacteria. We examined the ultrastructure of the methylotrophs with particular view of the ICM and surface structural features, between representatives of the Type I Methylomonas albus (BG8), and Type II Methylosinus trichosporium (OB-36).

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