title: N-Heterocyclic carbene gold(I) and silver(I) adducts of [Pt₂(μ-S)₂(PPh₃)₄]

authors: Henderson, William

subjects: platinum complexes

abstract: Reaction of the metalloligand [Pt₂(μ-S)₂(PPh₃)₄] with the N-heterocyclic carbene (NHC) complexes IPrAuCl, IMesAuCl and IMesAgCl in methanol gave the first examples of metal adducts of [Pt₂(μ-S)₂(PPh₃)₄] that contain NHC ligands, namely [Pt₂(μ-S) ₂ (PPh₃)₄AuL]⁺ (L = IPr, IMes) and [Pt₂(μ-S)₂(PPh₃)₄AgIMes]⁺. The complexes were isolated as hexafluorophosphate salts. Reaction of [Pt₂(μ-S)₂(PPh₃)₄]  with excess IPrAuCl in refluxing methanol yielded only the mono-adduct, in contrast to the behaviour with the gold(I) phosphine complex Ph₃PAuCl, which undergoes double addition giving [Pt₂(μ-SAuPPh₃)₂(PPh₃)₄]²⁺. The X-ray structure of [Pt₂(μ-S) ₂(PPh₃)₄AuIPr]PF₆ was determined and reveals that the ‘free’ sulfide is substantially sterically protected by the IPr ligand, accounting for the low reactivity towards addition of a second AgIPr⁺ moiety.

text: N-Heterocyclic carbene gold(I) and silver(I) adducts of [Pt₂(μ-S)₂(PPh₃)₄] Reaction of the metalloligand [Pt₂(μ-S)₂(PPh₃)₄] with the N-heterocyclic carbene (NHC) complexes IPrAuCl, IMesAuCl and IMesAgCl in methanol gave the first examples of metal adducts of [Pt₂(μ-S)₂(PPh₃)₄] that contain NHC ligands, namely [Pt₂(μ-S) ₂ (PPh₃)₄AuL]⁺ (L = IPr, IMes) and [Pt₂(μ-S)₂(PPh₃)₄AgIMes]⁺. The complexes were isolated as hexafluorophosphate salts. Reaction of [Pt₂(μ-S)₂(PPh₃)₄]  with excess IPrAuCl in refluxing methanol yielded only the mono-adduct, in contrast to the behaviour with the gold(I) phosphine complex Ph₃PAuCl, which undergoes double addition giving [Pt₂(μ-SAuPPh₃)₂(PPh₃)₄]²⁺. The X-ray structure of [Pt₂(μ-S) ₂(PPh₃)₄AuIPr]PF₆ was determined and reveals that the ‘free’ sulfide is substantially sterically protected by the IPr ligand, accounting for the low reactivity towards addition of a second AgIPr⁺ moiety.

year: 2011-11-30

title: Initiating and Sustaining Female Networks in Computer Science and IT

authors: Oelinger, Maria

subjects: Women in Computing

abstract: Over the last decade, several networks and communities for women in IT have been initiated. It has been known that specific needs for support exist where members of a minority have difficulties in finding like-minded people in their everyday environment. This paper investigates different forms of female networks in Computer Science and IT. In particular, it analyses forms of network initiation, which often involve face-to-face meetings at regular events like conferences or, increasingly, at summer universities for female students. We conducted three studies to identify the attendees' expectations and needs for support using questionnaires, interviews, and a wiki analysis. This paper aims at identifying effective strategies for initiating female networks.

text: Initiating and Sustaining Female Networks in Computer Science and IT Over the last decade, several networks and communities for women in IT have been initiated. It has been known that specific needs for support exist where members of a minority have difficulties in finding like-minded people in their everyday environment. This paper investigates different forms of female networks in Computer Science and IT. In particular, it analyses forms of network initiation, which often involve face-to-face meetings at regular events like conferences or, increasingly, at summer universities for female students. We conducted three studies to identify the attendees' expectations and needs for support using questionnaires, interviews, and a wiki analysis. This paper aims at identifying effective strategies for initiating female networks.

year: 2007-08-01

title: Hāwatewate

authors: Maxwell, Te Kahautu

subjects: Whakaeke

abstract: He whakamārama mō te whakaeke apakura
He whakaeke apakura tēnei hai whakamaumaharatanga ki te kotahi rau e rima tekau tau mai i te murunga whenua o Te Whakatōhea. Ka tangihia te tāwharonanga harakoretanga o Mokomoko tipuna o Te Whakatōhea. I whakapaetekatia e Te Karauna nāna i kōhuru te mihinare a Te Wākana i te 2 o Poutūterangi i te tau kotahi mano e waru rau e ono tekau mā rima (1865). Ahakoa nā Kereopa o Ngāti Rangiwewehi i patu a Te Wākana. I haramai a Te Kereopa i raro i te Paimārire (Hauhau) ki Ōpōtiki. Ko tā Te Paimārire kaupapa i tae atu ai ko te kauhau i te whakapono hou a Te Ua Haumēne. Ko ngā āpōtoro i tukuna atu e Te Ua Haumēne ko Pātara Rakataura me Te Kereopa, hoi anō ko te kauhau i te rongopai tā Te Ua Haumēne i whakahau ai. Hoi anō he take tā Te Kereopa, tā te mea i kōhurutia tana wahine me āna tamāhine tokorua ki te whare karakia i Rangiaowhia ki roto o Tainui. Nara i pau a Ngāti Apakura ki te mate, ā i patua anō tana tamāhine hoki ki te pakanga i Hairini. Koiarā tā Kereopa he rānaki i te mate o tana whānau i pau i te ahi nukarau a te Karauna. Nā tēnei patunga i a Te Wākana i riro ai te 250,000 eka o Te Whakatōhea. I tēnei rā tonu o Te Matatini i tēnei tau 2015 kua eke ki te kotahi rau e rima tekau (150) tau o te parekuranui o Te Whakatōhea mō te patunga i te tangata kotahi nā tētahi atu. Ko te kōhuru i a Te Whakatōhea me āna tamariki, āna mokopuna, ko te tāwharona i ngā tāne, i ngā wāhine, ko te ekeeke kino te rarahu i ngā wāhine me ngā tamariki kōtiro, tāne hoki. Mutu ana te rarahu ko te kōhuru i a rātou ki te pū, ki te mata o te pēneti ko te tahu rānei. Ko te urupatu anō tērā ko te tahu i ngā pā, i ngā whare tīpuna, i ngā māra, i ngā mira mahi paura, i ngā kaipuke tauhokohoko ki Tāmaki, ki Poihākena, ki Ingarangi. Ko te parekura nui tēnei o Te Whakatōhea, ko te kōhuru i tō mātou katoa, tō mātou ao, tō mātou wairua, tō mātou hinengaro, tō mātou tinana o Te Whakatōhea mō te mate kotahi a te tangata kotahi. Ahakoa he mihingare, he pūrahorua hoki he kawe o kōrero nōna ki a Kāwana Kerei mō ngā nekeneke a Te Whakatōhea ki te tautoko i a Kīngi Tāwhiao me ngā pakanga whenua i Rangiriri, i Ōrakau i te tau kotahi mano e waru rau e ono tekau mā whā (1864).

text: Hāwatewate He whakamārama mō te whakaeke apakura
He whakaeke apakura tēnei hai whakamaumaharatanga ki te kotahi rau e rima tekau tau mai i te murunga whenua o Te Whakatōhea. Ka tangihia te tāwharonanga harakoretanga o Mokomoko tipuna o Te Whakatōhea. I whakapaetekatia e Te Karauna nāna i kōhuru te mihinare a Te Wākana i te 2 o Poutūterangi i te tau kotahi mano e waru rau e ono tekau mā rima (1865). Ahakoa nā Kereopa o Ngāti Rangiwewehi i patu a Te Wākana. I haramai a Te Kereopa i raro i te Paimārire (Hauhau) ki Ōpōtiki. Ko tā Te Paimārire kaupapa i tae atu ai ko te kauhau i te whakapono hou a Te Ua Haumēne. Ko ngā āpōtoro i tukuna atu e Te Ua Haumēne ko Pātara Rakataura me Te Kereopa, hoi anō ko te kauhau i te rongopai tā Te Ua Haumēne i whakahau ai. Hoi anō he take tā Te Kereopa, tā te mea i kōhurutia tana wahine me āna tamāhine tokorua ki te whare karakia i Rangiaowhia ki roto o Tainui. Nara i pau a Ngāti Apakura ki te mate, ā i patua anō tana tamāhine hoki ki te pakanga i Hairini. Koiarā tā Kereopa he rānaki i te mate o tana whānau i pau i te ahi nukarau a te Karauna. Nā tēnei patunga i a Te Wākana i riro ai te 250,000 eka o Te Whakatōhea. I tēnei rā tonu o Te Matatini i tēnei tau 2015 kua eke ki te kotahi rau e rima tekau (150) tau o te parekuranui o Te Whakatōhea mō te patunga i te tangata kotahi nā tētahi atu. Ko te kōhuru i a Te Whakatōhea me āna tamariki, āna mokopuna, ko te tāwharona i ngā tāne, i ngā wāhine, ko te ekeeke kino te rarahu i ngā wāhine me ngā tamariki kōtiro, tāne hoki. Mutu ana te rarahu ko te kōhuru i a rātou ki te pū, ki te mata o te pēneti ko te tahu rānei. Ko te urupatu anō tērā ko te tahu i ngā pā, i ngā whare tīpuna, i ngā māra, i ngā mira mahi paura, i ngā kaipuke tauhokohoko ki Tāmaki, ki Poihākena, ki Ingarangi. Ko te parekura nui tēnei o Te Whakatōhea, ko te kōhuru i tō mātou katoa, tō mātou ao, tō mātou wairua, tō mātou hinengaro, tō mātou tinana o Te Whakatōhea mō te mate kotahi a te tangata kotahi. Ahakoa he mihingare, he pūrahorua hoki he kawe o kōrero nōna ki a Kāwana Kerei mō ngā nekeneke a Te Whakatōhea ki te tautoko i a Kīngi Tāwhiao me ngā pakanga whenua i Rangiriri, i Ōrakau i te tau kotahi mano e waru rau e ono tekau mā whā (1864).

year: 2017