title: An electron-deficient triosmium cluster containing the thianthrene ligand: Synthesis, structure and reactivity of [Os₃(CO)₉(μ3-η2-C₁₂H₇S₂)(μ-H)]

authors: Raha, Arun K.

subjects: triosmium cluster

abstract: Reaction of [Os₃(CO)₁₀(CH₃CN)₂] with thianthrene at 80 °C leads to the nonacarbonyl dihydride compound [Os₃(CO)₉(μ-3,4-η²-C₁₂H₆S₂)(μ-H)₂] (1) and the 46-electron monohydride compound [Os₃(CO)₉(μ₃-η²-C₁₂H₇S₂)(μ-H)] (2). Compound 2 reacts reversibly with CO to give the CO adduct [Os₃(CO)₁₀(μ-η²-C₁₂H₇S₂)(μ-H)] (3) whereas with PPh₃ it gives the addition product [Os₃(CO)₉)(PPh₃)(μ-η²-C₁₂H₇S₂)(μ-H)] (4) as well as the substitution product 1,2-[Os₃(CO)₁₀ ((PPh₃)₂] (5) Compound 2 represents a unique example of an electron-deficient triosmium cluster in which the thianthrene ring is bound to cluster by coordination of the sulfur lone pair and a three-center-two-electron bond with the C(2) carbon which bridges the same edge of the triangle as the hydride. Electrochemical and DFT studies which elucidate the electronic properties of 2 are reported.

text: An electron-deficient triosmium cluster containing the thianthrene ligand: Synthesis, structure and reactivity of [Os₃(CO)₉(μ3-η2-C₁₂H₇S₂)(μ-H)] Reaction of [Os₃(CO)₁₀(CH₃CN)₂] with thianthrene at 80 °C leads to the nonacarbonyl dihydride compound [Os₃(CO)₉(μ-3,4-η²-C₁₂H₆S₂)(μ-H)₂] (1) and the 46-electron monohydride compound [Os₃(CO)₉(μ₃-η²-C₁₂H₇S₂)(μ-H)] (2). Compound 2 reacts reversibly with CO to give the CO adduct [Os₃(CO)₁₀(μ-η²-C₁₂H₇S₂)(μ-H)] (3) whereas with PPh₃ it gives the addition product [Os₃(CO)₉)(PPh₃)(μ-η²-C₁₂H₇S₂)(μ-H)] (4) as well as the substitution product 1,2-[Os₃(CO)₁₀ ((PPh₃)₂] (5) Compound 2 represents a unique example of an electron-deficient triosmium cluster in which the thianthrene ring is bound to cluster by coordination of the sulfur lone pair and a three-center-two-electron bond with the C(2) carbon which bridges the same edge of the triangle as the hydride. Electrochemical and DFT studies which elucidate the electronic properties of 2 are reported.

year: 2008

title: An Extensible Web Application Vulnerability Assessment and Testing Framework

authors: Delamore, Baden

abstract: The process of identifying vulnerabilities in web services plays an integral role in reducing risk to an organisation that seeks to protect their intellectual property and data. The process itself generally involves an automated scan that looks for software misconfigurations, outdated services and exposures that may lead to defacement, data loss or system compromise. However, even with myriad open-source and commercial applications that provide automated vulnerability assessments, the frequency of large scale data breaches and exploitation by adversaries is continuing to increase. This thesis presents a framework that enables not only the skilled security professional to accurately assess the risk of vulnerabilities in web servers, but also empowers non-technical users to scan their web servers and find out the implications of vulnerabilities in their systems. This is achieved by building a user-centric solution which addresses the gaps identified in previous work, and focuses on the most critical vulnerabilities outlined by two major security research organisations.

text: An Extensible Web Application Vulnerability Assessment and Testing Framework The process of identifying vulnerabilities in web services plays an integral role in reducing risk to an organisation that seeks to protect their intellectual property and data. The process itself generally involves an automated scan that looks for software misconfigurations, outdated services and exposures that may lead to defacement, data loss or system compromise. However, even with myriad open-source and commercial applications that provide automated vulnerability assessments, the frequency of large scale data breaches and exploitation by adversaries is continuing to increase. This thesis presents a framework that enables not only the skilled security professional to accurately assess the risk of vulnerabilities in web servers, but also empowers non-technical users to scan their web servers and find out the implications of vulnerabilities in their systems. This is achieved by building a user-centric solution which addresses the gaps identified in previous work, and focuses on the most critical vulnerabilities outlined by two major security research organisations.

year: 2014

title: Book Review: The Treaty of Waitangi in New Zealand’s law and constitution

authors: Olivier, Morne

subjects: The Treaty of Waitangi

abstract: The Treaty of Waitangi occupies an unsettled place in New Zealand’s constitution, law and life. Although there is almost universal agreement that it is a foundation document, this is not reflected in the legal status of the Treaty, or necessarily in its treatment by government. The Treaty engenders strong emotions on both sides of the political divide. Many New Zealanders are ambivalent about it. For some, it is a private issue; for others, it is very public, and very political. Both the legal and constitutional status of the Treaty is uncertain and unsettled, and so is the question of who exercises public power in relation to it. Harris has described the Treaty as one ingredient of a ‘cauldron of quietly simmering constitutional issues’. In this well-researched book, Matthew Palmer confronts these issues head on, and argues his vision for settling the legal and constitutional position of the Treaty.

text: Book Review: The Treaty of Waitangi in New Zealand’s law and constitution The Treaty of Waitangi occupies an unsettled place in New Zealand’s constitution, law and life. Although there is almost universal agreement that it is a foundation document, this is not reflected in the legal status of the Treaty, or necessarily in its treatment by government. The Treaty engenders strong emotions on both sides of the political divide. Many New Zealanders are ambivalent about it. For some, it is a private issue; for others, it is very public, and very political. Both the legal and constitutional status of the Treaty is uncertain and unsettled, and so is the question of who exercises public power in relation to it. Harris has described the Treaty as one ingredient of a ‘cauldron of quietly simmering constitutional issues’. In this well-researched book, Matthew Palmer confronts these issues head on, and argues his vision for settling the legal and constitutional position of the Treaty.

year: 2006