Facile synthesis and structures of silver formamidinates and pyrazolates

Guo, Zhifang, Wang, Nicole, Blair, Victoria L., Izgorodina, Ekaterina I., Deacon, Glen B., and Junk, Peter C. (2022) Facile synthesis and structures of silver formamidinates and pyrazolates. Australian Journal of Chemistry, 75 (8 & 9). pp. 558-565.

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Dinuclear silver formamidinates, [Ag₂(DFForm)₂(py)₂] (1) (DFForm, N,N′-bis(2,6-difluorophenyl)formamidinate, py = pyridine), [Ag₂(mHForm)₂(py)₃] (2) and [Ag₂(mHForm)₂(CH3CN)₂] (2a) (mHForm, N,N′-bis(2,3,4,6-tetrafluorophenyl)formamidinate), [Ag₂(pHForm)₂(py)₃] (3) (pHForm, N,N′-bis(2,3,5,6-tetrafluorophenyl)formamidinate), [Ag₂(PFForm)₂(py)₃] (4) (PFForm, N,N′-bis(2,3,4,5,6-pentafluorophenyl)formamidinate) and [Ag₂(DippForm)₂]·1.25CH₂Cl₂ (5) (DippForm, N,N′-bis(2,6-diisopropylphenyl)formamidinate), and polynuclear, mainly trinuclear, silver pyrazolates, [Ag₃(Ph₂pz)₃]₂ (6) (Ph₂pz, 3,5-diphenylpyrazolate), [Ag(tBu₂pz)]₄ (7) (tBu₂pz, 3,5-di-tert-butylpyrazolate), [Ag₃(PhMepz)₃] (8) (PhMepz, 3-methyl-5-phenylpyrazolate), [Ag₃(Phtpz)₃] (9) (Phtpz, 3-phenyl-5-(2-thienyl)pyrazolate), [Ag₃(ttfpz)₃] (10) (ttfpz, 3-(2-thienyl)-5-trifluoromethylpyrazolate) and [Ag₂(Me₂pz)(PPh₃)₄Cl] (11) (Me₂pz, 3,5-dimethylpyrazolate) were successfully synthesized in good yield by treating silver(i) oxide with the corresponding formamidines (FormH) or pyrazoles (pzH) either in pyridine or acetonitrile. These rapid, easily handled and economical reactions are readily monitored by consumption of black silver oxide. All compounds are potential precursors in redox transmetallation reactions in the synthesis of lanthanoid and alkaline earth pyrazolate and formamidinate complexes.

Item ID: 74731
Item Type: Article (Research - C1)
ISSN: 1445-0038
Keywords: crystal structures, formamidinates, N-donor ligands, one-pot reaction, pyrazolates, silver complexes, synthesis
Copyright Information: © 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing.
Funders: Australian Research Council (ARC)
Projects and Grants: ARC DP190100798
Date Deposited: 25 Oct 2022 00:14
FoR Codes: 34 CHEMICAL SCIENCES > 3402 Inorganic chemistry > 340211 Transition metal chemistry @ 100%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280105 Expanding knowledge in the chemical sciences @ 100%
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