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Chemical Name


 

1,2,5-oxadiazole (C2H2N2O)

Compound Descriptions:

Structure Drawing
Formula:C2H2N2O
Molecular Weight:70.05 g/mol
Name(s):1,2,5-oxadiazole
Furazan
furazane
Azoxazole
1-Oxa-2,5-diazacyclopentadiene
CAS-RN:288-37-9
Classification:no charge; oxygen heterocycle; nitrogen heterocycle; aromatic; 5ring; 1fragment

Derivatives / Analogues

Analogueother chalcogen: 1,2,5-thiadiazole 
Analogueother chalcogen: 1,2,5-selenadiazole 

Landolt-Börnstein Citations:

Magnetic Properties

Spectroscopic Methods

Structure and Molecular Constants

 Molecular Constants Mostly From Microwave, Molecular Beam, Electro Spin Resonance and Sub-Doppler Laser Spectroscopy: Vol. II/4 2.5:175II/4
 Molecular Constants Mostly From Microwave, Molecular Beam, Electro Spin Resonance and Sub-Doppler Laser Spectroscopy: Vol. II/4 2.6:203bII/4
 Molecular Constants Mostly From Microwave, Molecular Beam, Electro Spin Resonance and Sub-Doppler Laser Spectroscopy: Vol. II/4 2.7:98aII/4
 Molecular Constants Mostly From Microwave, Molecular Beam, Electro Spin Resonance and Sub-Doppler Laser Spectroscopy: Vol. II/19b 2.5.2:141II/19b
 Molecular Constants Mostly From Microwave, Molecular Beam, Electro Spin Resonance and Sub-Doppler Laser Spectroscopy: Vol. II/19c 2.7.4.2:69II/19c
 Molecular Constants Mostly From Microwave, Molecular Beam, Electro Spin Resonance and Sub-Doppler Laser Spectroscopy: Vol. II/24b 2.5.2:119II/24B
 Structure Data of Free Polyatomic Molecules: Vol. II/25b 3:611II/25B

References

II/19b
Short: II/19b
Title: Molecular Constants: Rotational, Centrifugal Distortion and Related Constants of Diamagnetic Asymmetric Top Molecules
Author: Demaison, J.; Hüttner, W.; Vogt, J.; Wlodarczak, G.
Editor: Hüttner, W.
Source: Landolt-Börnstein, New Series
Volume: II/19b
Year: 1992
Keyword: organic compounds; molecular constants; spectroscopy; microwave spectroscopy
ISBN: 3-540-54578-6
ISBN: 978-3-540-54578-1
Internet Resource: DOI:10.1007/b44334
RefComment: XI, 488 pages.
Abstract: Volume II/19 Molecular Constants mostly from Microwave, Molecular Beam and Sub-Doppler Laser Spectroscopy is a supplement to the earlier volumes II/4, II/6, and II/14. The slight change in the title reflects current trends in the applications of spectroscopic methods. Together, the four volumes collect all the critically evaluated data published up to 1989/90 on constants of free molecules obtained by classical and modern spectroscopy. Volume II/19 is divided into four parts to record the growing number of investigations, especially in the microwave and millimeter wave regions, where modern techniques like Fourier Transform Microwave Spectroscopy have made new objects of interest such as molecular complexes and clusters accessible to study. Subvolume II/19b contains corresponding data on diamagnetic asymmetric top molecules.
II/19c
Short: II/19c
Title: Molecular Constants: Dipole Moments, Quadrupole Coupling Constants, Hindered Rotation and Magnetic Constants of Diamagnetic Molecules
Author: Demaison, J.; Hüttner, W.; Tiemann, E.; Vogt, J.; Wlodarczak, G.
Editor: Hüttner, W.
Source: Landolt-Börnstein, New Series
Volume: II/19c
Year: 1992
Keyword: organic compounds; molecular constants; spectroscopy; microwave spectroscopy
ISBN: 3-540-54893-9
ISBN: 978-3-540-54893-5
Internet Resource: DOI:10.1007/b44435
RefComment: 8 figs., XI, 295 pages.
Abstract: Volume II/19 Molecular Constants mostly from Microwave, Molecular Beam and Sub-Doppler Laser Spectroscopy is a supplement to the earlier volumes II/4, II/6, and II/14. The slight change in the title reflects current trends in the applications of spectroscopic methods. Together, the four volumes collect all the critically evaluated data published up to 1989/90 on constants of free molecules obtained by classical and modern spectroscopy. Volume II/19 is divided into four parts to record the growing number of investigations, especially in the microwave and millimeter wave regions, where modern techniques like Fourier Transform Microwave Spectroscopy have made new objects of interest such as molecular complexes and clusters accessible to study. Subvolume II/19c contains tables for diamagnetic molecules giving further spectroscopic parameters: quadrupole coupling constants, potential barriers, and data from Stark and Zeeman effect measurements.
II/2
Short: II/2
Title: Magnetic Properties of Coordination and Organometallic Transition Metal Compounds
Author: König, E.
Editor: Hellwege, K.-H.; Hellwege, A.M.
Source: Landolt-Börnstein, New Series
Volume: II/2
Year: 1966
ISBN: 3-540-03593-1
ISBN: 978-3-540-03593-0
Internet Resource: DOI:10.1007/b19948
RefComment: 170 figs., XII, 578 pages. Hardcover
Abstract: The data compiled refer to susceptibility measurements (susceptibility, Curie-constants, magnetic moments, transition temperatures) and ESR-measurements (g-factors and other parameters of the applied spin Hamiltonian). In volume II/2 the literature from 1899 up to 1964 has been considered. Volume II/8 supplements volume II/2, taking into account the data on magnetic susceptibilities and ESR parameters published in the p eriod 1964 to 1968. The following subvolumes II/10,II/11, II/12 supplement data up to 1974.
II/24B
Short: II/24B
Title: Molecular Constants mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy: Rotational, Centrifugal Distortion and Related Constants of Diamagnetic Asymmetric Top Molecules
Author: Demaison, J.; Vogt, J.; Wlodarczak, G.
Editor: Hüttner, W.
Source: Landolt-Börnstein, New Series
Volume: II/24B
Year: 2000
Keyword: Diamagnetics Diatomics; Linear Symmetric Rotors; Molecular Constants; Molecules
ISBN: 3-540-65345-7
ISBN: 978-3-540-65345-5
Internet Resource: DOI:10.1007/b58835
RefComment: VIII, 525 pages. Hardcover
Abstract: Volume II/24 presents the spectroscopic data on diamagnetic and paramagnetic molecules as well as on molecular ions and radicals up to date considering the publications up to and partly including 1997. The spectroscopic information collected in this volume has been obtained principally from gas phase microwave measurements. Volume II/24 is a supplement to volumes II/4, II/6, II/14, and II/19 and is planned to appear in five subvolumes, the last of which will contain the substance index taking into account all molecules worked at since 1967 in the volumes mentioned and will provide cross references to and between all tables of these. The present subvolume II/24B contains an introduction and tables of rotational and centrifugal distortion constants of asymmetric-top molecules, i.e. data which roughly specifies the frequencies of the rotational transitions of these types of rotors.
II/25B
Short: II/25B
Title: Structure Data Of Free Polyatomic Molecules: Molecules containing One or Two Carbon Atoms
Author: Graner, G.; Hirota, E.; Iijima, T.; Kuchitsu, K.; Ramsay, D.A.; Vogt, J.; Vogt, N.
Editor: Kuchitsu, K.
Source: Landolt-Börnstein, New Series
Volume: II/25B
Year: 1999
Keyword: Free Polyatomic Molecules; Carbon Atoms; Molecules
ISBN: 3-540-63645-5
ISBN: 978-3-540-63645-8
Internet Resource: DOI:10.1007/b68834
RefComment: IX, 512 pages. Hardcover
Abstract: Volume II/25 is a supplemented and revised edition of the preceding volumes II/7, II/15, II/21 and II/23 containing up to date information on inorganic and organic polyatomic molecules. All experimental methods for the determination of quantitative structural data of free molecules have been considered: microwave, infrared, Raman, electronic and photoelectron spectroscopy as well as electron diffraction. The data obtained by these methods have been critically evaluated and compiled. They are presented separately for each molecule, together with a schematic figure of the structure and the original literature.
II/27B
Short: II/27B
Title: Diamagnetic Susceptibility of Organic Compounds, Oils, Paraffins and Polyethylenes
Author: Kumar, M.; Gupta, R.
Editor: Gupta, Radha Raman
Source: Landolt-Börnstein, New Series
Volume: II/27B
Year: 2008
Keyword: diamagnetic susceptibility; organic compounds
ISBN: 978-3-540-44359-9 (print)
ISBN: 978-3-540-45860-9 (online)
Internet Resource: doi:10.1007/978-3-540-45860-9
RefComment: VIII, 503 p. With CD-ROM., Hardcover
RefComment: Written for: Scientists and researchers in the fields of physics, chemistry, materials science
RefComment: Supplement and Revised Editon to II/16
Abstract: The volume II/27 has been divided into three subvolumes according to the classes of compounds: Subvolume A: Diamagnetic susceptibility and magnetic anisotropy of inorganic and organometallic compounds; Subvolume B: Diamagnetic susceptibility of organic compounds, oils, paraffins and polyethylenes; Subvolume C: Diamagnetic susceptibility and magnetic anisotropy of organic compounds. The data presented in this volume are based on the literature survey of the chemical abstracts up to 2005. The calculated values of diamagnetic susceptibility of organic compounds in the present subvolume II/27B are presented along with their experimental values. They have been calculated with the use of structural parameters in structural formula by using different theoretical methods available in the literature.
II/27C
Short: II/27C
Title: Diamagnetic Susceptibility and Magnetic Anisotropy of Organic Compounds
Author: Kumar, Mahendra; Gupta, Rajni
Editor: Gupta, Radha Raman
Source: Landolt-Börnstein, New Series
Volume: II/27C
Year: 2008
Keyword: diamagnetic susceptibility; magnetic anisotropy; organic compounds
ISBN: 978-3-540-44734-4 (print)
ISBN: 978-3-540-44736-8 (online)
Internet Resource: doi:10.1007/978-3-540-44736-8
RefComment: VIII, 204 p., Hardcover
RefComment: Written for: Scientists and researchers in the fields of physics, chemistry, materials science
RefComment: Supplement and Revised Editon to II/16
Abstract: The volume II/27 has been divided into three subvolumes according to the classes of compounds: Subvolume A: Diamagnetic susceptibility and magnetic anisotropy of inorganic and organometallic compounds; Subvolume B: Diamagnetic susceptibility of organic compounds (Part 1); Subvolume C: Diamagnetic susceptibility and magnetic anisotropy of organic compounds (Part 2). The data presented in this volume are based on the literature survey of the chemical abstracts up to 2005.
II/4
Short: II/4
Title: Molecular Constants from Microwave Spectroscopy
Author: Starck, B.
Editor: Hellwege, K.-H.; Hellwege, A.M.
Source: Landolt-Börnstein, New Series
Volume: II/4
Page: 1-225
Year: 1967
Keyword: organic compounds; molecular constants; spectroscopy; microwave spectroscopy
ISBN: 3-540-03896-5
ISBN: 978-3-540-03896-2
Internet Resource: DOI:10.1007/b19949
RefComment: 67 figs., X
III/35B
Short: III/35B
Title: Nuclear Magnetic Resonance (NMR) Data: Chemical Shifts and Coupling Constants for Fluorine-19 and Nitrogen-15
Author: Balasubramanian, M.; Gupta, R.R.; Jain, M.; Perumal, S.
Editor: Gupta, R.R.; Lechner, M.D.
Source: Landolt-Börnstein, New Series
Volume: III/35B
Year: 1998
ISBN: 3-540-63275-1
ISBN: 978-3-540-63275-7
Internet Resource: DOI:10.1007/b55685
RefComment: VII, 242 pages. With CD-ROM. Hardcover
Abstract: This volume provides a comprehensive and evaluated compilation of nuclear magnetic resonance data. Chemical shifts and coupling constants of boron-11 and phosphorus-31 (subvol. A), fluorine-19 and nitrogen-15 (subvol. B), hydrogen-1 (subvol. C), and carbon-13 (subvol. D) compounds are tabulated together with the gross- and structure formulas and the most readily available solvents. Due to the large amount of the data merely chemical shifts are presented in the printed versions, and all the data, chemical shifts and coupling constants are provided on CO-ROM's.

  File created on 2009/18/08 by LCI Publisher GmbH (Gaja Peters, Inga Thede, Volkmar Vill, Ron Zenczykowski)
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