The crystal and molecular structure of thiamine hydroiodide /|nWilliam Edward Lee. -- 260 St. Catharines [Ont.] : Dept. of Chemistry, Brock University,

The x-ray crystal structure of thiamine hydroiodide,C1ZH18N40S12' has been determined. The unit cell parameters are a = 13.84 ± 0.03, o b = 7.44 ± 0.01, c = 20.24 ± 0.02 A, 8 = 120.52 ± 0.07°, space group P2/c, z = 4. A total of 1445 reflections having ,2 > 2o(F2), 26 < 40° were collected on a Picker four-circle diffractometer with MoKa radiation by the 26 scan technique. The structure was solved by the heavy atom method. The iodine and sulphur atoms were refined anisotropically; only the positional parameters were refined for the hydrogen atoms. Successive least squares cycles yielded an unweighted R factor of 0.054. The site of protonation of the pyrimidine ring is the nitrogen opposite the amino group. The overall structure conforms very closely to the structures of other related thiamine compounds. The bonding surrounding the iodine atoms is distorted tetrahedral. The iodine atoms make several contacts with surrounding atoms most of them at or near the van der Waal's distances A thiaminium tetrachlorocobaltate salt was produced whose molecular and crystal structure was j~dged to be isomorphous to thiaminium tetrachlorocadmate.

Photograph - J. Diefenbaker, Keith Marten, Sean O'Sullivan, Lee Richardson

A photograph of J. Diefenbaker, Keith Marten, Sean O'Sullivan and Lee Richardson. The photograph is undated. It is included in a photo book in honour of John G. Diefenbaker's 80th birthday.

Wrestling Card - Lee Henning

The wrestler's name is Lee Henning and the number stamped on the reverse is 764.

Wrestling Card - H.I. Lee

The wrestler's name is H.I. Lee and the number stamped on the reverse is 599. The second card is stamped 051.

Letter to Mr. Lee who was clerk of the Heir Devisee Committee in Toronto from Samuel D. Woodruff

Letter to Mr. Lee who was clerk of the Heir Devisee Committee in Toronto from Samuel D. Woodruff. [The Heir and Devisee Committee was formed to clarify the titles to land of heirs of people who had been assigned Crown lands before 1795. Many of the original grantees had not taken out patents to confirm their legal right to the land.] This letter confirms that steps have been taken to issue the patent, July 19, 1847.

Letter to Mr. Lee from Samuel D. Woodruff

Letter to Mr. Lee from Samuel D. Woodruff which states that in July the affidavits were sent for the purpose of getting the patent for Lot no.30, Concession 2 in Enniskillen. Mr. Woodruff requests a receipt of that information and he would like to know about the progress on the patent. The left hand of the letter is completely burned away although most of the text is still intact, Feb. 21, 1848.

BioMed Central : un nouveau modèle de l'édition scientifique à l'Université de Montréal

Publié sur le site Web des bibliothèques des sciences de la santé en 2004.

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