Volatile and Thermally Stable Mid to Late Transition Metal Complexes Containing α-Imino Alkoxide Ligands, a New Strongly Reducing Coreagent, and Thermal Atomic Layer Deposition of Ni, Co, Fe, and Cr Metal Films

2013 ◽  
Vol 135 (34) ◽  
pp. 12588-12591 ◽  
Author(s):  
Lakmal C. Kalutarage ◽  
Philip D. Martin ◽  
Mary Jane Heeg ◽  
Charles H. Winter
Keyword(s):  
Transition Metal ◽  
Atomic Layer Deposition ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Atomic Layer ◽  
Metal Films ◽  
Late Transition Metal ◽  
Thermally Stable ◽  
Layer Deposition ◽  
Late Transition

scholarly journals Role of anionic backbone in NHC-stabilized coinage metal complexes: New precursors for atomic layer deposition

2021 ◽  
Author(s):  
Nils Boysen ◽  
Anish Philip ◽  
Detlef Rogalla ◽  
Maarit Karppinen ◽  
Anjana Devi
Keyword(s):  
Atomic Layer Deposition ◽  
Metal Complexes ◽  
Atomic Layer ◽  
Metal Films ◽  
Thermally Stable ◽  
Substitution Pattern ◽  
Coinage Metal ◽  
Layer Deposition ◽  
Considerable Impact ◽  
Cu Complexes

Cu and Ag precursors that are volatile, reactive, and thermally stable are currently of high interest for their application in atomic layer deposition (ALD) of thin metal films. In pursuit of new precursors for coinage metals namely Cu and Ag, a series of new N-heterocyclic carbene (NHC) based Cu(I) and Ag(I) complexes were synthesized. Modifications in the substitution pattern of diketonate-based anionic backbones led to five monomeric Cu complexes and four closely related Ag complexes with the general formula [M(tBuNHC)(R)] (M = Cu, Ag; tBuNHC = 1,3-di-tert-butyl-imidazolin-2-ylidene; R = diketonate). Thermal analysis indicated that most of the Cu complexes are thermally stable and volatile compared to the more fragile Ag analogs. One of the promising Cu precursors was evaluated for the ALD of nanoparticulate Cu metal films using hydroquinone as the reducing agent at appreciably low deposition temperatures (145–160 °C). This study highlights the considerable impact of the employed ligand sphere on the structural and thermal properties of metal complexes that are relevant for vapor phase processing of thin films.

scholarly journals Role of anionic backbone in NHC-stabilized coinage metal complexes: New precursors for atomic layer deposition

2021 ◽  
Author(s):  
Nils Boysen ◽  
Anish Philip ◽  
Detlef Rogalla ◽  
Maarit Karppinen ◽  
Anjana Devi
Keyword(s):  
Atomic Layer Deposition ◽  
Metal Complexes ◽  
Atomic Layer ◽  
Metal Films ◽  
Thermally Stable ◽  
Substitution Pattern ◽  
Coinage Metal ◽  
Layer Deposition ◽  
Considerable Impact ◽  
Cu Complexes

Cu and Ag precursors that are volatile, reactive, and thermally stable are currently of high interest for their application in atomic layer deposition (ALD) of thin metal films. In pursuit of new precursors for coinage metals namely Cu and Ag, a series of new N-heterocyclic carbene (NHC) based Cu(I) and Ag(I) complexes were synthesized. Modifications in the substitution pattern of diketonate-based anionic backbones led to five monomeric Cu complexes and four closely related Ag complexes with the general formula [M(tBuNHC)(R)] (M = Cu, Ag; tBuNHC = 1,3-di-tert-butyl-imidazolin-2-ylidene; R = diketonate). Thermal analysis indicated that most of the Cu complexes are thermally stable and volatile compared to the more fragile Ag analogs. One of the promising Cu precursors was evaluated for the ALD of nanoparticulate Cu metal films using hydroquinone as the reducing agent at appreciably low deposition temperatures (145–160 °C). This study highlights the considerable impact of the employed ligand sphere on the structural and thermal properties of metal complexes that are relevant for vapor phase processing of thin films.

Hydrosilylation as an efficient tool for polymer synthesis and modification with methacrylates

RSC Advances ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 5879-5885 ◽  
Author(s):  
Nuttapol Risangud ◽  
Zhijian Li ◽  
Athina Anastasaki ◽  
Paul Wilson ◽  
Kristian Kempe ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Polymer Synthesis ◽  
Late Transition Metal ◽  
Efficient Tool ◽  
Silicon Compounds ◽  
Late Transition

Hydrosilylation is a well-established reaction for the preparation of organo-silicon compounds, in which vinyl groups react with silanes (Si–H) usually catalysed by late transition metal complexes, most often Pt(ii) complexes.

Electron-density distributions in selected ferrocenyl-pyrazolyl late transition-metal complexes

2018 ◽  
Vol 20 (17) ◽  
pp. 11682-11691
Author(s):  
M. A. Peck ◽  
G. R. Hearne ◽  
C. Obuah ◽  
J. Darkwa
Keyword(s):  
Mössbauer Spectroscopy ◽  
Transition Metal ◽  
Metal Complexes ◽  
Electron Density ◽  
Transition Metal Complexes ◽  
Mossbauer Spectroscopy ◽  
Late Transition Metal ◽  
Density Distributions ◽  
Mößbauer Spectroscopy ◽  
Late Transition

57Fe Mössbauer spectroscopy has been used to study electronic dispersions in complexes of Fe, Co, Ni and Pd anchored onto 3-ferrocenyl-5-methylpyrazolylmethylenepyridine and 3-ferrocenylpyrazolylmethylenepyridine ligands.

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