Elektronenbeugung und Molekülbau. (

Wierl, R.

doi:10.1002/andp.19314000502

Cited by 141 publications

(15 citation statements)

References 15 publications

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“…This is confirmed by electron diffraction measurements (Brockway 1936;Wierl 1931), and by the infra-red (Cassie 1935) and Raman (Anderson and others 1936) spectra. Boron tribromide (Anderson and others 1936) has a similar configuration.…”

Section: Assignmentsmentioning

confidence: 61%

The molecular structure of boron trifluoride, BF ₃

Bailey

Hale

Thompson

1937

Proc. R. Soc. Lond. A

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I n t r o d u c t o r yThe total number of valence electrons in this compound is 3 + 3 x 7 = 24 = 3x8, and in accordance with Zachariasen's rule (1931) the boron atom should he at the centre of the triangle formed by the three fluorine atoms. If this total number is expressible as»x8 + rox2, then the central atom is displaced from the plane, as in SOy ~. It was partly with a view to determining whether the extreme ionic nature of fluorine made any difference to this principle that this infra-red investigation was undertaken.The results obtained were completed by the recent publication of the Raman spectrum of this substance (Anderson, Lassettre and Yost 1936) in both the gaseous and liquid states.

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Section: Assignmentsmentioning

confidence: 61%

The molecular structure of boron trifluoride, BF ₃

Bailey

Hale

Thompson

1937

Proc. R. Soc. Lond. A

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“…This has been confirmed by electron diffraction experiments (2) and, for condensed aromatic molecules, by X-ray analysis (3). Indeed, X-ray methods had shown that many substituted derivatives of benzene (including hexamethylbenzene, durene, benzoquinone, anthracene, naphthalene, chrysene, etc.)…”

Section: Non-planar Aromatic Moleculesmentioning

confidence: 88%

Non-planar Aromatic Molecules

Lonsdale¹

1937

Zeitschrift Für Kristallographie - Crystalline Materials

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“…Its history at Caltech is a rather short one, however: after the structures of a few, mostly lead, compounds were measured with it, and a few less conventional ones (NpF 6 and PuF 6 ), it was effectively retired. 7 The COT problem 7 The reason: Verner resigned from Caltech to assume a position at the Union Carbide Research Institute. The apparatus was later "loaned" to Professor Lothar Schäfer at the University of Arkansas.…”

Section: The Postfellowship Yearsmentioning

confidence: 99%

“…Further details are found in the article cited [6]. The beauty of this system was that the cards could be used either for the calculation of radial distribution curves according to rD(r) = I (q) sin(qr) ( 1 ) or theoretical intensity curves according to the modified Wierl equation [7] …”

Section: Solving the Structure With Visual Datamentioning

confidence: 99%

Fifty Years of Gas-Phase Electron-Diffraction Structure Research: A Personal Retrospective

Hedberg

2005

Struct Chem

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The author has spent nearly five decades working on the molecular structure of gaseous molecules using principally the method of electron diffraction. During this time he has seen and participated in the development of the method from its crude beginning in which the diffraction patterns were measured by hand and interpreted by eye, to the powerful, nearly automatic instrument-based methods of today. Accompanying this evolution in the method is a similar evolution in the complexity of the scientific problems. Whereas in the early days the molecules studied were necessarily simple and the parameter determinations accurate to a few hundredths of anÅngström, electron diffraction today is routinely applied to molecules with a 10-fold greater numbers of parameters and yields results 10 times more accurate. This article summarizes some of the many recollections accumulated by the author during that professional journey.

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Elektronenbeugung und Molekülbau. (

Abstract: E l e k t r o m n n b e u y g umd MoZetciiZbnu Von R. W i e r l (Mit 30 Figuren)

Cited by 141 publications

References 15 publications

The molecular structure of boron trifluoride, BF ₃

The molecular structure of boron trifluoride, BF ₃

Non-planar Aromatic Molecules

Fifty Years of Gas-Phase Electron-Diffraction Structure Research: A Personal Retrospective

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Elektronenbeugung und Molekülbau. (

Abstract: E l e k t r o m n n b e u y g umd MoZetciiZbnu Von R. W i e r l (Mit 30 Figuren)

Cited by 141 publications

References 15 publications

The molecular structure of boron trifluoride, BF 3

The molecular structure of boron trifluoride, BF 3

Non-planar Aromatic Molecules

Fifty Years of Gas-Phase Electron-Diffraction Structure Research: A Personal Retrospective

Contact Info

Product

Resources

About

The molecular structure of boron trifluoride, BF ₃

The molecular structure of boron trifluoride, BF ₃