Abstract
The following AgIbis(pyrazolyl)methane complexes with BF4–/NO3–as counteranions were synthesized and characterized: [Ag(LpzH)]2(NO3)2(1), [Ag(LpzMe)]2(NO3)2(2), [Ag(LpzH)]n(BF4)n(3), and [Ag(LpzMe)]n(BF4)n(4) [LpzH= bis(pyrazolyl)methane; LpzMe= bis(3,5-dimethylpyrazolyl)methane]. These complexes were prepared to identify optimum precursors for the thermolytic deposition of metallic silver. The crystal structures of 1 and 2 show that the complexes are dinuclear and that the NO3–anions interact with the metals. In contrast, 3 is polymeric and the BF4–does not interact with the metal. When crystallizing 1–4 in non-anhydrous solvents, the presence of adventitious water further reacts with 3 and 4 (but not with 1 and 2) to yield dinuclear complexes [Ag(LpzH)(H2O)2]2(BF4)2(3a) and [Ag(LpzMe)(H2O)2]2(BF4)2(4a). All of the dinuclear species 1, 2, 3a and 4a exhibit an argentophilic interaction with Ag···Ag distances in the range 3.18–2.99 Å. Thermogravimetric analysis (TGA) shows that 1 and 2 have lower decomposition temperatures (231 and 255 °C, respectively) than 3 and 4 (298 and 331 °C, respectively). 2 was further investigated as a precursor for metallic silver deposition by spin-coating solutions (10–3m, THF/DMSO, 4:1), followed by annealing at 310 °C on 52100 steel substrates. According to energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) the metal deposition proceeds primarily via an island growth (Volmer–Weber) mechanism.
Original language | English (US) |
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Pages (from-to) | 2626-2633 |
Number of pages | 8 |
Journal | European Journal of Inorganic Chemistry |
Volume | 2016 |
Issue number | 15-16 |
DOIs | |
State | Published - Jun 2016 |
Keywords
- Chemical vapor deposition
- Metal deposition
- N ligands
- Silver
ASJC Scopus subject areas
- Inorganic Chemistry
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CCDC 1421550: Experimental Crystal Structure Determination
Bassanetti, I. (Creator), Mattarozzi, M. (Creator), Delferro, M. (Creator), Marks, T. J. (Creator) & Marchiò, L. (Creator), Cambridge Crystallographic Data Centre, 2016
DOI: 10.5517/cc1jq7gy, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc1jq7gy&sid=DataCite
Dataset
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CCDC 1421552: Experimental Crystal Structure Determination
Bassanetti, I. (Creator), Mattarozzi, M. (Creator), Delferro, M. (Creator), Marks, T. J. (Creator) & Marchiò, L. (Creator), Cambridge Crystallographic Data Centre, 2016
DOI: 10.5517/cc1jq7j0, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc1jq7j0&sid=DataCite
Dataset
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CCDC 1421548: Experimental Crystal Structure Determination
Bassanetti, I. (Creator), Mattarozzi, M. (Creator), Delferro, M. (Creator), Marks, T. J. (Creator) & Marchiò, L. (Creator), Cambridge Crystallographic Data Centre, 2016
DOI: 10.5517/cc1jq7dw, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc1jq7dw&sid=DataCite
Dataset