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.

Silver(I) Bis(pyrazolyl)methane Complexes and Their Implementation as Precursors for Metallic Silver Deposition / Bassanetti, Irene; Mattarozzi, Monica; Delferro, Massimiliano; Marks, Tobin J.; Marchio', Luciano. - In: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY. - ISSN 1434-1948. - 2016:15-16(2016), pp. 2626-2633. [10.1002/ejic.201501236]

Silver(I) Bis(pyrazolyl)methane Complexes and Their Implementation as Precursors for Metallic Silver Deposition

BASSANETTI, Irene;MATTAROZZI, Monica;MARCHIO', Luciano
2016-01-01

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.
2016
Silver(I) Bis(pyrazolyl)methane Complexes and Their Implementation as Precursors for Metallic Silver Deposition / Bassanetti, Irene; Mattarozzi, Monica; Delferro, Massimiliano; Marks, Tobin J.; Marchio', Luciano. - In: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY. - ISSN 1434-1948. - 2016:15-16(2016), pp. 2626-2633. [10.1002/ejic.201501236]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2807710
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact