Published by De Gruyter

Volume 47 Issue 1-2

Issue of Zeitschrift für Naturforschung A

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Contents
Journal Overview

Publicly Available June 2, 2014

Titelei

Page range: I-II

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Publicly Available June 2, 2014

Inhaltsverzeichnis

Page range: III-XV

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Open Access June 2, 2014

Preface

35 Cl, 81 Br, 121 Sb, and 209 Bi NQR of the title compounds was observed. According to the results of the temperature dependences of NQR frequencies and the DTA measurements, phase transitions take place in [N(CH 3 ) 4 ] 3 Bi 2 Br 9 (T tr =183K), [N(CH 3 ) 4 ] 3 Bi 2 Cl 9 (T tr = 155K), and (CH 3 NH 3 ) 3 Bi 2 Cl 3 (T tr = 200 and 249 K). 2 D NMR spectra for partially deuterated (CH 3 ND 3 ) 3 Bi,Br 9 showed that the phase transitions in this compound are related to the motion of the methylammonium cations. Single-crystal X-ray work at room temperature shows that the space group for [N(CH 3 ) 4 ] 3 Sb 2 Cl 9 is P6 3 /mmc with a = 925.1 pm, c = 2173.4 pm, Z = 2. For (CH 3 NH 3 ) 3 Sb 2 Br 9 the space group is P3ml with a = 818.8 pm, c = 992.7 pm, Z = 1; in both cases the cations show dynamical disorder. The Rietveld analysis of the powder X-ray diffraction for (CH 3 NH 3 ) 3 Bi 2 Br 9 reveals the space group P3ml with a = 821.0, c - 1000.4 pm, Z = 1 at room temperature; the compound is isomorphous with (CH 3 NH 3 ) 3 Sb 2 Br 9 . The crystal symmetries of the low-temperature phases of (CH 3 NH 3 ) 3 Bi 2 Br 9 and [N(CH 3 ) 4 ] 3 Bi 2 Br 9 were deduced from the results of the NQR spectroscopy

Two-dimensional NQR spectroscopy is experimentally accomplished by direct detection; forbidden transitions are also recorded. Two-dimensional spectra with cross-peaks are used in assigning lines in complex spectra. A method is described of increasing the 14 N NQR sensitivity by saturating the line v 0 whilst observing the NQR at a frequency v_. The presence of a low magnetic field is shown to improve the conditions for localised NQR observations.

Open Access June 2, 2014

The Quasistationary States in Multipulse NQR

D. Ya. Osokin, V. L. Ermakov, R. H. Kurbanov, V. A. Shagalov

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Recent Development of Nuclear Quadrupole Resonance Spectra Database

Hideaki Chihara, Koichi Mano

Page range: 446-452

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Abstract

The Nuclear Quadrupole Resonance Spectra (NQRS) Database contains all the numerical data of resonance frequencies that have been published since 1950, the year NQR was discovered, through the end of 1989. The total number of records compiled is 10,155 as of May, 1991. One record usually covers data of a particular polymorphic modification of a crystalline substance. About 3/4 of all the records deal with organic or organometallic substances. Recent changes in the data content and format, development of online and stand-alone search software, statistics of the database, and updating problems are described. A personal computer version of the database with load/search software was prepared and is described in the Appendix

About this journal

Objective
A Journal of Physical Sciences: Zeitschrift für Naturforschung A (ZNA) is an international scientific journal which publishes original research papers from all areas of experimental and theoretical physics. Authors are encouraged to pay particular attention to a clear exposition of their respective subject, addressing a wide readership. In accordance with the name of our journal, which means “Journal for Natural Sciences”, manuscripts submitted to ZNA should have a tangible connection to actual physical phenomena. In particular, we welcome experiment-oriented contributions.

Manuscripts considered for publication in A Journal of Physical Sciences: Zeitschrift für Naturforschung A undergo high-level refereeing. Mere formal correctness of a paper is not sufficient for its acceptance. Moreover, articles reporting a merely marginal extension of already existing knowledge are considered unsatisfactory. Instead, the key quality a publication in A Journal of Physical Sciences: Zeitschrift für Naturforschung A should possess is that it makes a genuine contribution to the advancement of its topic.

Topics

Atomic, Molecular & Optical Physics
Chemical Physics
Dynamical Systems & Nonlinear Phenomena
Fundamental Concepts of Physical Sciences
Gravitation & Cosmology
Hydrodynamics & Plasma Physics
Nuclear Physics & Particle Physics
Quantum Field Theory
Solid State Physics & Materials Science
Thermodynamics & Statistical Physics
Article formats
Original research articles, research notes, letters and review articles from all areas of theoretical and experimental physics

Information on submission process

Volume 47 Issue 1-2

Issue of Zeitschrift für Naturforschung A

Titelei

Inhaltsverzeichnis

Preface

Probing the Electronic Structure of Y-Ba-Cu-O Superconductors by Copper NQR/NMR

Abstract

NQR and NMR in High Tc Superconductors

Abstract

Oxygen Diffusion in YBa2Cu3O7–δ Studied via 133Ba(EC)133Cs Nuclear Quadrupole Interaction

Abstract

Cu NQR Study in a High-Jc Superconductor YBa2Cu3O6.1Ix

Abstract

Cu-NQR Frequencies and Linewidths in High- Tc Superconductors

Abstract

NQR Studies of the Structure of Glasses and Crystalline Compounds

Abstract

14N Quadrupole Interactions in Nitrogen-Containing Ceramics. Effects on 29Si NMR Line Shapes and Structural Implications

Abstract

Electric Field Gradient in Aluminium due to Vacancy and Muon

Abstract

Nucleus-Carrier Interactions in the Group V Semimetals: Dependence on Temperature and Pressure

Abstract

Cesium Iodometallates(III), Cs3M2I9, with M = Rare Earth. A Structural Investigation by 127I NQR

Abstract

NQR and X-ray Studies of [N(CH3)4]3M2X9 and (CH3NH3)3M2X9 (M = Sb,Bi; X = Cl,Br)

Abstract

Coordination of Ortho-Chlorines in Copper (I) and Silver (I) 2,6-Di- and 2,4,6-Trichlorophenolates

Crystal Structure of ( 2 , 4 , 6 -Trichlorophenolato-O, Cl) bis (triphenylphosphine) silver ( I )

Abstract

The Nuclear Quadrupole Interaction of 199mHg-Cysteine and 199mHg-tert-butyl-mercaptide

Abstract

The 111mCd Nuclear Quadrupole Interaction in CdCl2 and its Monohydrate

Abstract

14N NQR in 1,10-Phenanthroline and Dicyano bis(1,10-phenanthroline)iron(III)*

Abstract

81Br and 127 I NQR Studies of (CH3NH3)2HgBr4 and (CH3NH3)2HgI4

Abstract

A63,65Cu and 127I Nuclear Quadrupole Resonance and X-Ray Crystallographic Study of a Low-Temperature Phase of the (2-picoline) Copper (I) Iodide Dimer

Abstract

7Li-Solid-State-NMR of [Li(N,N,N',N'-Tetramethylethylenediamine)] CLO4 and [Li (N,N,N', N'-Tetramethylethylenediamine)2] Al(CH3)4

Abstract

An NQR Study of Tetrachloride Complexes of Group IVA Elements

Abstract

63,65Cu and 79 81Br NQR Studies of Thione Complexes of Cu(I) Halides

Abstract

Bromine-79 NQR for uncoordinated Br– ions in trans-[CoBr2(en)2][H5O2]Br2

Abstract

Electron Effects of Adduct Formation by some Metal Halides

Abstract

NQR Studies of Organic Compounds Containing Tetra- or Pentacoordinated Atoms of Elements of Groups IVA and VIA

Abstract

35Cl NQR Spectra of Organyl(chloroalkyl) Sulfides

Abstract

Spatial Electron Density Distribution of Chlorine Atoms in Molecules of the Series Cl2C = CXX'

Abstract

Dioxin Precursors: NQR Studies of Group 1 and Related 2,6-Dichlorophenolate and 2,4,6-Trichlorophenolate Salts

Abstract

35Cl NQR and Structural Studies of Chloroacetanilides C6H3Cl2NHCOCH3-xClx, 1 ≤ x ≤ 3

Abstract

79Br and 127I NQR of tert-Butylammonium Halides and Crystal Structure of (CH3)3CNH3⊕ Br⊖

Abstract

NQR and Crystal Structure of 4,5-Dichloroimidazole, C3H2N2Cl2

Abstract

Theoretical Study of the Electric Field Gradient in Silver Iodide

Abstract

The Nuclear Quadrupole Moments of the 20 First Elements: High-Precision Calculations on Atoms and Small Molecules

Abstract

Ab initio Calculations of the Electric Field Gradients in Solids in Relation to the Charge Distribution

Abstract

The ab initio Calculation of Nuclear Quadrupole Coupling Constants with Special Reference to 33S

Abstract

14N NQR and the Molecular Charge Topology in Coordinated Ammonia

Abstract

Milli-Kelvin NQR: A Study of the Praseodymium Trihalides

Abstract

Electric Field Effect on 14N NQR in Ferroelectric Thiourea Single Crystals

Abstract

Phase Transitions in Bis(4-chlorophenyl)sulfone as Studied by 35Cl FT-NQR

Abstract

NQR and NMR in High T_c Superconductors

Oxygen Diffusion in YBa₂Cu₃O_7–δ Studied via ¹³³Ba(EC)¹³³Cs Nuclear Quadrupole Interaction

Cu NQR Study in a High-Jc Superconductor YBa₂Cu₃O_6.1I_x

Cu-NQR Frequencies and Linewidths in High- T_c Superconductors

¹⁴N Quadrupole Interactions in Nitrogen-Containing Ceramics. Effects on ²⁹Si NMR Line Shapes and Structural Implications

Cesium Iodometallates(III), Cs₃M₂I₉, with M = Rare Earth. A Structural Investigation by ¹²⁷I NQR

NQR and X-ray Studies of [N(CH₃)₄]₃M₂X₉ and (CH₃NH₃)₃M₂X₉ (M = Sb,Bi; X = Cl,Br)

The Nuclear Quadrupole Interaction of ^199mHg-Cysteine and ^199mHg-tert-butyl-mercaptide

The ^111mCd Nuclear Quadrupole Interaction in CdCl₂ and its Monohydrate

¹⁴N NQR in 1,10-Phenanthroline and Dicyano bis(1,10-phenanthroline)iron(III)*

⁸¹Br and ¹²⁷ I NQR Studies of (CH₃NH₃)₂HgBr₄ and (CH₃NH₃)₂HgI₄

A^63,65Cu and ¹²⁷I Nuclear Quadrupole Resonance and X-Ray Crystallographic Study of a Low-Temperature Phase of the (2-picoline) Copper (I) Iodide Dimer

⁷Li-Solid-State-NMR of [Li(N,N,N',N'-Tetramethylethylenediamine)] CLO₄ and [Li (N,N,N', N'-Tetramethylethylenediamine)₂] Al(CH₃)₄

^63,65Cu and ^{79 81}Br NQR Studies of Thione Complexes of Cu(I) Halides

Bromine-79 NQR for uncoordinated Br^– ions in trans-[CoBr₂(en)₂][H₅O₂]Br₂

³⁵Cl NQR Spectra of Organyl(chloroalkyl) Sulfides

Spatial Electron Density Distribution of Chlorine Atoms in Molecules of the Series Cl₂C = CXX'

³⁵Cl NQR and Structural Studies of Chloroacetanilides C₆H₃Cl₂NHCOCH_3-xCl_x, 1 ≤ x ≤ 3

⁷⁹Br and ¹²⁷I NQR of tert-Butylammonium Halides and Crystal Structure of (CH₃)₃CNH₃^⊕ Br^⊖

NQR and Crystal Structure of 4,5-Dichloroimidazole, C₃H₂N₂Cl₂

The ab initio Calculation of Nuclear Quadrupole Coupling Constants with Special Reference to ³³S

¹⁴N NQR and the Molecular Charge Topology in Coordinated Ammonia

Electric Field Effect on ¹⁴N NQR in Ferroelectric Thiourea Single Crystals

Phase Transitions in Bis(4-chlorophenyl)sulfone as Studied by ³⁵Cl FT-NQR

³⁵Cl NQR and Crystal Structure Studies of Salts of Chlorodifluoro- and Dichloroacetic Acid

Chlorine-NQR Relaxation Near the Structural Transitions of Natural and Deuterated (NH₄)₂TeCl₆

Reorientational Motion of Trihalogenomethyl Groups in Organic Compounds as Studied by ³⁵Cl NQR and ¹⁹F NMR Spectroscopy

Chlorine Nuclear Quadrupole Relaxation and Cationic Motion in Trimethylsulfonium Hexachloroselenate(IV): [(CH₃)₃S]₂SeCl₆

Chlorine Nuclear Spin-Spin Relaxation Mechanism in Mg(H₂O)₆SnCl₆ as Studied by NQR and NMR Techniques

Reorientational Motion of Hydrogen Bonded Octahedral Complex Anions in Hydrazinium Hexachlorostannate(IV), (N₂H₅)₂SnCl₆, as Studied by ³⁵Cl NQR Spin-Lattice Relaxation Measurements

Reorientation of the CCl₃ Group in Chloral 4-Chlorobenzylhemiacetal. A Pulsed ³⁵Cl NQR and X-ray Study

³⁵Cl NQR Relaxation in Chloral Cyclohexylhemiacetal

The ³⁵Cl NQR Temperature Dependence of Hexa- and Octachlorocyclophosphazene

Temperature dependence of the Spin-Lattice Relaxation Time of the ²³Na-NMR Line in NaNO₂

Sodium Ion Exchange in Na_1+xZr₂Si_xP_3-xO₁₂ as Studied by ²³Na Nutation NMR

Anomalous Temperature Dependence of the ⁹⁹Tc Quadrupole Coupling and Disordering of Cesium Positions in CsTcO₄

³⁵Cl NQR and Molecular Motion in Solid C₆X₅Cl (X = H, F)

Weak Complexes of Dinitrogen: An Approach to the ¹⁴N-Nuclear Quadrupole Coupling Constant of Free N₂

A Simple Model to Explain ¹⁹F-TDPAD Amplitude Characteristics

Experimental Investigations of the Strong Off-Resonant Comb (SORC) Pulse Sequence in ¹⁴N NQR

¹⁴N Fourier Transform Nuclear Quadrupole Resonance. Instrumentation: Measurements on Cyanuric Chloride