title: Fragmentation pathways of [Re₂(μ-OR)₃(CO)₆]– (R = H, Me) and ligand exchange reactions with oxygen donor ligands, investigated by electrospray mass spectrometry

authors: Jiang, Chenghua

subjects: chemistry

abstract: The rhenium hydroxy and methoxy carbonyl complexes [Re₂(μOR)₃(CO)₆]⁻ (R = H or Me) have been studied by negative-ion electrospray mass spectrometry (ESMS). The complexes undergo facile exchange reactions with protic compounds, including alcohols and phenols. With dimethyl malonate, ester hydrolysis occurs giving carboxylate-containing complexes, and with H₂O₂ or ButOOH, oxidation to ReO₄⁻occurs. The feasibility and extent of these reactions can conveniently, rapidly, and unambiguously be determined by electrospray mass spectrometry, and is dependent on the acidity and steric bulk of the protic compound. The results also suggest that the complexes can be used as versatile starting materials for the synthesis of a wide range of analogous [Re₂(μ-OR)₃(CO)₆]⁻ complexes by simple reaction with an excess of the appropriate alcohol. By varying the applied cone voltage the fragmentation pathways have been investigated; the hydroxy complex undergoes dehydration followed by CO loss, whereas for the methoxy complex  -hydride elimination (and CO loss) is observed, with confirmation provided by deuterium labelling studies. Under ESMS conditions, the neutral complexes [Re₂(μ-OR)₂(μ-dppf )(CO)₆] [R = H or Me; dppf = 1,1 -bis(diphenylphosphino)ferrocene] undergo substantial solvolysis and hydrolysis to give mainly mononuclear species; simple parent ions (e.g. [M + H]⁺) are not formed in appreciable abundance, probably due to the lack of an efficient ionisation pathway.

text: Fragmentation pathways of [Re₂(μ-OR)₃(CO)₆]– (R = H, Me) and ligand exchange reactions with oxygen donor ligands, investigated by electrospray mass spectrometry The rhenium hydroxy and methoxy carbonyl complexes [Re₂(μOR)₃(CO)₆]⁻ (R = H or Me) have been studied by negative-ion electrospray mass spectrometry (ESMS). The complexes undergo facile exchange reactions with protic compounds, including alcohols and phenols. With dimethyl malonate, ester hydrolysis occurs giving carboxylate-containing complexes, and with H₂O₂ or ButOOH, oxidation to ReO₄⁻occurs. The feasibility and extent of these reactions can conveniently, rapidly, and unambiguously be determined by electrospray mass spectrometry, and is dependent on the acidity and steric bulk of the protic compound. The results also suggest that the complexes can be used as versatile starting materials for the synthesis of a wide range of analogous [Re₂(μ-OR)₃(CO)₆]⁻ complexes by simple reaction with an excess of the appropriate alcohol. By varying the applied cone voltage the fragmentation pathways have been investigated; the hydroxy complex undergoes dehydration followed by CO loss, whereas for the methoxy complex  -hydride elimination (and CO loss) is observed, with confirmation provided by deuterium labelling studies. Under ESMS conditions, the neutral complexes [Re₂(μ-OR)₂(μ-dppf )(CO)₆] [R = H or Me; dppf = 1,1 -bis(diphenylphosphino)ferrocene] undergo substantial solvolysis and hydrolysis to give mainly mononuclear species; simple parent ions (e.g. [M + H]⁺) are not formed in appreciable abundance, probably due to the lack of an efficient ionisation pathway.

year: 2000

title: Applicability of contrarian strategy in the Bombay stock exchange

authors: Locke, Stuart

subjects: contrarian strategy

abstract: The application of contrarian strategies in the Bombay Stock Exchange (BSE) are examined in this paper, shedding further light on competing explanations underlying this anomaly. Three specific issues are investigated using several models. First, can a trader book a profit by employing a contrarian strategy? The test portfolio earned a contrarian profit of 74.40 per cent above the market return. Second, risk differences between Winner and Loser portfolios are found to be an independent phenomenon. Third, the size of the firm appears to play a vital role in explaining the overreaction hypothesis.

text: Applicability of contrarian strategy in the Bombay stock exchange The application of contrarian strategies in the Bombay Stock Exchange (BSE) are examined in this paper, shedding further light on competing explanations underlying this anomaly. Three specific issues are investigated using several models. First, can a trader book a profit by employing a contrarian strategy? The test portfolio earned a contrarian profit of 74.40 per cent above the market return. Second, risk differences between Winner and Loser portfolios are found to be an independent phenomenon. Third, the size of the firm appears to play a vital role in explaining the overreaction hypothesis.

year: 2009

title: Performing Femininity. Carmen - Good Ship Lollipop: A solo performance

authors: Fraser, Elroy

subjects: Performance

abstract: In the tradition of queer fringe theatre, Carmen - Good Ship Lollipop: a solo performance was written by a queer playwright, with a queer message for a queer audience.  The play was devised by drawing on Queer Theatre practice and methodology.
The following thesis details the process I undertook to create Carmen - Good Ship Lollipop: a solo performance. The story was created using biographical content already in the public arena. The play is about the public life of the late Carmen Rupe, New Zealand’s most famous transsexual. 
A historical perspective of men performing as women, or more fittingly, femininity performed by those other than female is presented by drawing on literature of this genre. The place of the solo performer and the combined roles of the actor, director, and producer are explored. Definitions of queer theatre and female impersonation are presented and issues of imitation, innovation and authenticity discussed.
The first methodology section details the choice of the particular playtext, the scriptwriting process, and dramaturgical analysis of Carmen – Good Ship Lollipop: a solo performance 
The second methodology section details the ‘script to stage’ production process. The development of the rehearsal script and the decision to limit the rehearsal period to one week is discussed. The plays evolution in terms of style and structure is presented.
The conclusion analyses the final product: to what extent Carmen - Good Ship Lollipop: a solo performance is faithful the Queer Theatre genre, successful as a performance piece, and reactive enough to be relevant. What further development could be applied in order to perform a future season.

text: Performing Femininity. Carmen - Good Ship Lollipop: A solo performance In the tradition of queer fringe theatre, Carmen - Good Ship Lollipop: a solo performance was written by a queer playwright, with a queer message for a queer audience.  The play was devised by drawing on Queer Theatre practice and methodology.
The following thesis details the process I undertook to create Carmen - Good Ship Lollipop: a solo performance. The story was created using biographical content already in the public arena. The play is about the public life of the late Carmen Rupe, New Zealand’s most famous transsexual. 
A historical perspective of men performing as women, or more fittingly, femininity performed by those other than female is presented by drawing on literature of this genre. The place of the solo performer and the combined roles of the actor, director, and producer are explored. Definitions of queer theatre and female impersonation are presented and issues of imitation, innovation and authenticity discussed.
The first methodology section details the choice of the particular playtext, the scriptwriting process, and dramaturgical analysis of Carmen – Good Ship Lollipop: a solo performance 
The second methodology section details the ‘script to stage’ production process. The development of the rehearsal script and the decision to limit the rehearsal period to one week is discussed. The plays evolution in terms of style and structure is presented.
The conclusion analyses the final product: to what extent Carmen - Good Ship Lollipop: a solo performance is faithful the Queer Theatre genre, successful as a performance piece, and reactive enough to be relevant. What further development could be applied in order to perform a future season.

year: 2013