New Building Blocks for Dual-Property Molecule-Based Magnets

Two classes of compounds have been prepared and characterized as building blocks for chiral magnets and ferromagnetic conductors. In the fIrst project, the organic framework of a pentadentate, (N302) macro cycle has been synthetically modifIed to introduce phenyl substituents into its organic framework and the synthesis of four new [Fe(In(N302)(CN)2] complexes (I) - (IV) is presented. [Molecular diagram availble in pdf] This work represents the fIrst structural and magnetic studies of a family of spin crossover macrocycles that comprise of both structural and stereo-isomers. Magnetic susceptibility and Mossbauer data for the R,R-complex (I) is consistent with both a thermal and a light induced spin crossover transition. The X-ray data supports a change in geometry accompanying the thermal spin transition, from a high spin (HS) 7 -coordinate complex at room temperature to a low spin (LS) 5-coordinate complex at 100 K. The crystal structure ofthe racemic complex (III) reveals a HS, 7-coordinate complex at 200 K that undergoes no signifIcant structural changes on cooling. In contrast, the magnetic - susceptibility and Mossbauer data collected on a powder sample of the racemic complex are consistent with a LS complex. Finally, the meso complex (IV) was prepared and its structure and magnetic properties are consistent with a 5-coordinate LS complex that remains low spin, but undergoes conformational changes on cooling in solution. The chiral [Fe(H)(N302)(CN)2] macro cycle (I), together with its Mn(H) and Fe(H) derivatives have also been exploited as building blocks for the self-assembly of chiral magnets. In the second project, a synthetic route for the preparation of tetrathiafulvalene (TTF) donors covalently attached to a diisopropyl verdazyl radical via a cross conjugated pyridyl linker IS presented. Following this strategy, four new TTF-py- (diisopropyl)verdazyl radicals have been prepared and characterized (V) - (VIII) . [Molecular diagram available in pdf] The first (2:1) charge transfer complex ofa TTF-py-(diisopropyl)verdazyl radical donor and a TCNQ acceptor has been prepared and structurally characterized. The crystal packing shows that the donor and acceptor molecules are organized in a mixed stacking arrangement consistent with its insulating behaviour. EPR and magnetic susceptibility data support intramolecular ferromagnetic interactions between the TTF and the verdazyl radicals and antiferromagnetic interactions between TTF donors within a stack. In an attempt to increase the intramolecular exchange interaction between the two radicals, a TTF-x-(diisopropyl)verdazyl radical (IX) was prepared, where the two radicals are connected ia a conjugated divinylene linker. The neutral radical donors stack in a more favourable head-to-head arrangement but the bulky isopropyl groups prevent the donor radicals from stacking close enough together to facilitate good orbital overlap. [Molecular diagram available in pdf].

The neoliberalization of street vending policy in Lima, Peru: the politics of citizenship. property and public space in the production of a new urban marginality

Neoliberalism is having a significant and global impact on political, social and economic life across spaces. This work illustrates how neoliberalism is attempting to change the ways in which the urban poor - particularly those that participate in street vending - use urban spaces in Lima, Peru. Using municipal policies, newspaper articles and local academic texts I argue that there is a changing marginality in Lima that is being experienced by street vendors, and currently in los canas of Lima. In particular, I discuss formalization, a neoliberal strategy in street vending policy, which is used with eradication and social assistance strategies in attempts to re-regulate street vendors.

Property Lost, Captured, or Destroyed by the Enemy 1812-14 (1824)

Government report in congress discussing property lost, captured, or destroyed by the British during the War of 1812.

Payment for Property - War of 1812-14 (1824)

Government report in congress discussing payment for property during the War of 1812.

Report of a select committee to whom were referred the petition of Samuel Thompson and John Dailey: January 14, 1817, read, and ordered to lie upon the table (1817)

Concerning the request of the petitioners, former residents of Newark (present-day Niagara-on-the-Lake) in Upper Canada, for relief for the loss of their property when they were compelled to flee Canada after having aided the United States Army in the War of 1812.

John Miller Letter - December 1, 1812

Letter transcription: Truxton, Dec. 1, 1812. Sir, Enclosed I transmit the [receipt] of the Collectors at Truxton to David Griswold for the tax on 50 acres of no. 56 Truxton … showing that the tax has been paid on that portion of the Lot; Mr. Griswold wishes you to keep the receipt and he will call this winter sometime and get it… not being a writer he called on me to do it for him. I am Sir yours sincerely John Miller

Description of Mr. Samuel DeVeaux Woodruff's property on Ontario Street

Handwritten description of Mr. Samuel DeVeaux Woodruff’s property on Ontario Street which was sent by E. Gardiner to the Railway Company. This is a 1 page handwritten document. The land consisted of parts of Lots 20 and 21 in the 5th Concession of Grantham, June 26, 1901.

Calculations Regarding S.D. Woodruff's Property on Ontario Street

Calculations regarding S.D. Woodruff’s property on Ontario Street. 1 page of rough penciled calculations, n.d.

Description of Edward Dell’s property in Willoughby

Description of Edward Dell’s property in Willoughby which consists of part of Lot no.9. This includes a hand-drawn map and 1 ½ page handwritten description. The edges of this document are slightly burned. This does not affect the text, n.d.

Notice of sale regarding the late Ezekiel Cudney’s property including the dwelling, barn and fruit trees

Notice of sale regarding the late Ezekiel Cudney’s property including the dwelling, barn and fruit trees. The land contains 39 acres of parts of Lots 9 and 10 on the Welland River in the Township of Willoughby. The notice states that you must apply to S.D. Woodruff of St. Catharines. This is handwritten on a small piece of paper, Dec. 5, 1892.

List of instruments which are the property of Port Dalhousie and Thorold Railway in the possession of F. Laler

List of instruments which are the property of Port Dalhousie and Thorold Railway in the possession of F. Laler. This document is signed by S.D. Woodruff, Dec. 4, 1856.

Memorandum of S.D. Woodruff’s property on Ontario Street

Memorandum (1 page, handwritten) of S.D. Woodruff’s property on Ontario Street, Jul. 25, 1901.

List entitled “Total amount of ½ September paid” includes tax and supplies prices

List entitled “Total amount of ½ September paid” includes tax and supplies prices, n.d.

Letter of agreement to Welland D. Woodruff to pay Hamilton K. Woodruff $27, 500 for the property known as DeVeaux Hall

Letter of agreement to Welland D. Woodruff to pay Hamilton K. Woodruff $27, 500 for the property known as DeVeaux Hall.

Insurance policy made to Henry Nelles of Grimsby covering a property in Grimsby, Upper Canada

Insurance policy made to Henry Nelles of Grimsby covering a property in Grimsby, Upper Canada from the Phoenix Fire Office of Montreal, July 15, 1831.