title: A combinatorial-like probe on the reactivity of the {Pt₂S₂} core of Pt₂(PPh₃)₄(μ-S)₂ by electrospray mass spectrometry. Synthesis and structures of novel heterometallic sulfide aggregates of gold(III), mercury(II), and tin(IV) with platinum(II)

authors: Fong, S.W. Audi

subjects: chemistry

abstract: Electrospray mass spectrometry (ESMS) provides a rapid and convenient technique for probing the nucleophilicity of the {Pt₂S₂} butterfly  core. Positive-ion electrospray mass spectra have been recorded for a wide array of aggregates incorporating various metallo-fragments into the Pt₂(PPh₃)₄(μ-S)₂ 1 moiety. Such combinatorial-like screening allowed a large number of different metal–sulfur interactions to be studied and the resultant heterometallic aggregates postulated. Such postulations were subsequently confirmed by synthetic studies and single-crystal X-ray crystallographic analyses. This approach helped to minimize the  wastage  by focusing on the synthesis of aggregates that were supported by the ESMS evidence. It has resulted in the isolation of a series of novel aggregates such as {AuIIIPt₂S₂}, {HgIIPt₂S₂}, and {SnIVPt₂S₂} in good lab-scale yields. It also led to the trapping and characterization of the monoprotonated product of 1, which has eluded isolation.

text: A combinatorial-like probe on the reactivity of the {Pt₂S₂} core of Pt₂(PPh₃)₄(μ-S)₂ by electrospray mass spectrometry. Synthesis and structures of novel heterometallic sulfide aggregates of gold(III), mercury(II), and tin(IV) with platinum(II) Electrospray mass spectrometry (ESMS) provides a rapid and convenient technique for probing the nucleophilicity of the {Pt₂S₂} butterfly  core. Positive-ion electrospray mass spectra have been recorded for a wide array of aggregates incorporating various metallo-fragments into the Pt₂(PPh₃)₄(μ-S)₂ 1 moiety. Such combinatorial-like screening allowed a large number of different metal–sulfur interactions to be studied and the resultant heterometallic aggregates postulated. Such postulations were subsequently confirmed by synthetic studies and single-crystal X-ray crystallographic analyses. This approach helped to minimize the  wastage  by focusing on the synthesis of aggregates that were supported by the ESMS evidence. It has resulted in the isolation of a series of novel aggregates such as {AuIIIPt₂S₂}, {HgIIPt₂S₂}, and {SnIVPt₂S₂} in good lab-scale yields. It also led to the trapping and characterization of the monoprotonated product of 1, which has eluded isolation.

year: 2001

title: "I cannot see my way clear. I cannot see the blackboard": Deconstructing personal failure stories

authors: Kotzé, Elmarie

subjects: autoethnography,

abstract: In this article, a failure identity story of a student counsellor is deconstructed. Self-data on the experiences of her six-year-old self in a school were generated through an outsider witness ceremony, as suggested by White (2007) in Maps of Narrative Practice. The data take the form of a rescued speech poem, as proposed by Speedy (2005). The article reflects on the process of data generation and of using a failure conversation map, as discussed by White (2002) in his paper “Addressing personal failure,” to analyse and deconstruct the failure identity/ies available to the student counsellor. The process of the research, the writing, and the analyses of the failure story contributed to the development of an ethical counselling practice by the student counsellor.

text: "I cannot see my way clear. I cannot see the blackboard": Deconstructing personal failure stories In this article, a failure identity story of a student counsellor is deconstructed. Self-data on the experiences of her six-year-old self in a school were generated through an outsider witness ceremony, as suggested by White (2007) in Maps of Narrative Practice. The data take the form of a rescued speech poem, as proposed by Speedy (2005). The article reflects on the process of data generation and of using a failure conversation map, as discussed by White (2002) in his paper “Addressing personal failure,” to analyse and deconstruct the failure identity/ies available to the student counsellor. The process of the research, the writing, and the analyses of the failure story contributed to the development of an ethical counselling practice by the student counsellor.

year: 2014

title: Murau a te tini (Mourned by the multitudes) & Pounamu (Greenstone)

authors: Rewi, Poia

subjects: Māori poetry

abstract: A song and a poem by Poia Rewi.

text: Murau a te tini (Mourned by the multitudes) & Pounamu (Greenstone) A song and a poem by Poia Rewi.

year: 2000-10