title: Wrap up summary of the day

authors: Madsen, John

abstract: Summary of Day 1 2015 LakesWater Quality Society conference.

text: Wrap up summary of the day Summary of Day 1 2015 LakesWater Quality Society conference.

year: 2015

title: Germanium derivatives of cobalt carbonyl

authors: Gerlach, Robert F.

abstract: This work reports the reactions of NaCo (CO)₄ with GeCl₄, GeBr₄, MeGeCl₃, MeGeBr₃, and Me₂GeCl₂ and of Co₂(CO)₈ with germanium hydride derivatives, along with the isolation and characterisation of their products. Amongst these are the new compounds ClGe[Co(CO)₄]₃, Br₂Ge[Co(CO)₄]₂, BrGe[Co(CO)₄]₃, MeGeCl₂Co(CO)₄, MeGeBr₂Co(CO)₄, MeGeCl[Co(CO)₄]₂, MeGeBr[Co(CO)₄]₂, GeCo₄(CO)₁₄ and Ge[Co(CO)₄]₄. There have also been indications of MeGe[Co(CO)₄]₃ and some spectroscopic data have been collected for Me₂GeBrCo(CO)₄.
The proposed configuration for GeCo₄(CO)₁₄ is a novel extension of the already-established germanium – bridged dicobalt carbonyl derivatives. The relationships between and interconversions of three tetracobalt derivatives of Germanium are discussed.
A review of Group IVB - Cobalt carbonyl derivatives is presented along with a discussion of the mass and infrared spectra of compounds prepared in this work.
Some of the chlorogermyl cobalt carbonyl derivatives prepared in this work have been reacted with NaMn(CO)₅. Under this competition situation, metal carbonyl exchange has been found to be favoured over alkali halide elimination.
e.g. :
ClGe[Co(CO)₄]₃ + 3NaMn(CO)₅ → ClGe[Mn(CO)₅]₃ + 3NaCo(CO)₄
However, this system is subject to substituent effects.
Preliminary studies on the Germanium derivatives of Rhenium and Vanadium carbonyls are also reported.

text: Germanium derivatives of cobalt carbonyl This work reports the reactions of NaCo (CO)₄ with GeCl₄, GeBr₄, MeGeCl₃, MeGeBr₃, and Me₂GeCl₂ and of Co₂(CO)₈ with germanium hydride derivatives, along with the isolation and characterisation of their products. Amongst these are the new compounds ClGe[Co(CO)₄]₃, Br₂Ge[Co(CO)₄]₂, BrGe[Co(CO)₄]₃, MeGeCl₂Co(CO)₄, MeGeBr₂Co(CO)₄, MeGeCl[Co(CO)₄]₂, MeGeBr[Co(CO)₄]₂, GeCo₄(CO)₁₄ and Ge[Co(CO)₄]₄. There have also been indications of MeGe[Co(CO)₄]₃ and some spectroscopic data have been collected for Me₂GeBrCo(CO)₄.
The proposed configuration for GeCo₄(CO)₁₄ is a novel extension of the already-established germanium – bridged dicobalt carbonyl derivatives. The relationships between and interconversions of three tetracobalt derivatives of Germanium are discussed.
A review of Group IVB - Cobalt carbonyl derivatives is presented along with a discussion of the mass and infrared spectra of compounds prepared in this work.
Some of the chlorogermyl cobalt carbonyl derivatives prepared in this work have been reacted with NaMn(CO)₅. Under this competition situation, metal carbonyl exchange has been found to be favoured over alkali halide elimination.
e.g. :
ClGe[Co(CO)₄]₃ + 3NaMn(CO)₅ → ClGe[Mn(CO)₅]₃ + 3NaCo(CO)₄
However, this system is subject to substituent effects.
Preliminary studies on the Germanium derivatives of Rhenium and Vanadium carbonyls are also reported.

year: 1978

title: Boat electrofishing survey of fish abundance in the Ohau Channel, Rotorua, in 2016

authors: Hicks, Brendan J.

abstract: The aim of the survey was to provide on-going monitoring of the fish communities and abundance by boat electrofishing in the Ohau Channel, especially fish species that are taonga to Maori (tuna, or eels, morihana, or goldfish, and kōura, or freshwater crayfish). In the current study, we present the findings from the tenth year of sampling (2016) and a summary of previous surveys.

text: Boat electrofishing survey of fish abundance in the Ohau Channel, Rotorua, in 2016 The aim of the survey was to provide on-going monitoring of the fish communities and abundance by boat electrofishing in the Ohau Channel, especially fish species that are taonga to Maori (tuna, or eels, morihana, or goldfish, and kōura, or freshwater crayfish). In the current study, we present the findings from the tenth year of sampling (2016) and a summary of previous surveys.

year: 2017