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Benedet M, Barreca D, Fois E, Seraglia R, Tabacchi G, Roverso M, Pagot G, Invernizzi C, Gasparotto A, Heidecker AA, Pöthig A, Callone E, Dirè S, Bogialli S, Di Noto V, Maccato C. Interplay between coordination sphere engineering and properties of nickel diketonate-diamine complexes as vapor phase precursors for the growth of NiO thin films. Dalton Trans 2023. [PMID: 37337724 DOI: 10.1039/d3dt01282d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
NiO-based films and nanostructured materials have received increasing attention for a variety of technological applications. Among the possible strategies for their fabrication, atomic layer deposition (ALD) and chemical vapor deposition (CVD), featuring manifold advantages of technological interest, represent appealing molecule-to-material routes for which a rational precursor design is a critical step. In this context, the present study is focused on the coordination sphere engineering of three heteroleptic Ni(II) β-diketonate-diamine adducts of general formula [NiL2TMEDA] [L = 1,1,1-trifluoro-2,4-pentanedionate (tfa), 2,2-dimethyl-6,6,7,7,8,8,8-heptafluoro-3,5-octanedionate (fod) or 2,2,6,6-tetramethyl-3,5-heptanedionate (thd), and TMEDA = N,N,N',N'-tetramethylethylenediamine]. Controlled variations in the diketonate structure are pursued to investigate the influence of steric hindrance and fluorination degree on the chemico-physical characteristics of the compounds. A multi-technique investigation supported by density functional calculations highlights that all complexes are air-insensitive and monomeric and that their thermal properties and fragmentation patterns are directly dependent on functional groups in the diketonate ligands. Preliminary thermal CVD experiments demonstrate the precursors' suitability for the obtainment of NiO films endowed with flat and homogeneous surfaces, paving the way to future implementation for CVD end-uses.
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Affiliation(s)
- Mattia Benedet
- Department of Chemical Sciences - Padova University and INSTM, Via Marzolo 1, 35131 Padova, Italy
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Davide Barreca
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Ettore Fois
- Department of Science and High Technology - Insubria University and INSTM, Via Valleggio 11, 22100 Como, Italy.
| | - Roberta Seraglia
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Gloria Tabacchi
- Department of Science and High Technology - Insubria University and INSTM, Via Valleggio 11, 22100 Como, Italy.
| | - Marco Roverso
- Department of Chemical Sciences - Padova University and INSTM, Via Marzolo 1, 35131 Padova, Italy
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Gioele Pagot
- Section of Chemistry for the Technology (ChemTech), Department of Industrial Engineering - Padova University and INSTM, Via Marzolo 9, 35131 Padova, Italy
| | - Cristiano Invernizzi
- Department of Science and High Technology - Insubria University and INSTM, Via Valleggio 11, 22100 Como, Italy.
| | - Alberto Gasparotto
- Department of Chemical Sciences - Padova University and INSTM, Via Marzolo 1, 35131 Padova, Italy
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Alexandra A Heidecker
- Catalysis Research Center & Department of Chemistry - Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Alexander Pöthig
- Catalysis Research Center & Department of Chemistry - Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Emanuela Callone
- "Klaus Müller" Magnetic Resonance Laboratory, Department of Industrial Engineering - Trento University, Via Sommarive 9, 38123 Trento, Italy
| | - Sandra Dirè
- "Klaus Müller" Magnetic Resonance Laboratory, Department of Industrial Engineering - Trento University, Via Sommarive 9, 38123 Trento, Italy
| | - Sara Bogialli
- Department of Chemical Sciences - Padova University and INSTM, Via Marzolo 1, 35131 Padova, Italy
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Vito Di Noto
- Section of Chemistry for the Technology (ChemTech), Department of Industrial Engineering - Padova University and INSTM, Via Marzolo 9, 35131 Padova, Italy
| | - Chiara Maccato
- Department of Chemical Sciences - Padova University and INSTM, Via Marzolo 1, 35131 Padova, Italy
- CNR-ICMATE and INSTM - Department of Chemical Sciences - Padova University, Via Marzolo 1, and Corso Stati Uniti 4, 35127 Padova, Italy.
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Shtokvysh OO, Dyakonenko VV, Koval LI, Pekhnyo VI. Crystal structure and Hirshfeld surface analysis of bis-(μ-4- tert-but-oxy-4-oxobut-2-en-2-olato)bis-[(4- tert-but-oxy-4-oxobut-2-en-2-olato)ethano-lzinc(II)]. Acta Crystallogr E Crystallogr Commun 2023; 79:478-481. [PMID: 37151829 PMCID: PMC10162079 DOI: 10.1107/s2056989023003377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/12/2023] [Indexed: 05/09/2023]
Abstract
The mol-ecular and crystal structure of the title binuclear Zn2+ complex, [Zn2(C8H13O3)4(C2H5OH)2], with enolated anionic tert-butyl-aceto-acetate and ethanol was analysed. The coordination polyhedra of the Zn atoms are distorted octa-hedra formed by six oxygen atoms that belong to three ligand mol-ecules and a coordinated ethanol mol-ecule. In the crystal phase, alternating layers can be distinguished parallel to the ac plane. A Hirshfeld surface analysis showed that there are no strong inter-molecular inter-actions in the structure. The most significant contributions to the overall crystal packing are from H⋯H inter-molecular contacts.
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Affiliation(s)
- Olherd O. Shtokvysh
- V. I. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Akad. Palladin Ave 32/34, Kyiv 03142, Ukraine
- Correspondence e-mail:
| | - Viktoriya V. Dyakonenko
- V. I. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Akad. Palladin Ave 32/34, Kyiv 03142, Ukraine
- SSI "Institute for Single Crystals" National Academy of Sciences of Ukraine, Nauki Ave 60, Kharkiv 61001, Ukraine
| | - Lyudmila I. Koval
- V. I. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Akad. Palladin Ave 32/34, Kyiv 03142, Ukraine
| | - Vasyl I. Pekhnyo
- V. I. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Akad. Palladin Ave 32/34, Kyiv 03142, Ukraine
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Zywitzki D, Taffa DH, Lamkowski L, Winter M, Rogalla D, Wark M, Devi A. Tuning Coordination Geometry of Nickel Ketoiminates and Its Influence on Thermal Characteristics for Chemical Vapor Deposition of Nanostructured NiO Electrocatalysts. Inorg Chem 2020; 59:10059-10070. [PMID: 32589409 DOI: 10.1021/acs.inorgchem.0c01204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nickel-based nanostructured materials have gained widespread attention, particularly for energy-related applications. Employing chemical vapor deposition (CVD) for NiO necessitates suitable nickel precursors that are volatile and stable. Herein, we report the synthesis and characterization of a series of new nickel β-ketoiminato complexes with different aliphatic and etheric side chain substitutions, namely, bis(4-(isopropylamino)-pent-3-en-2-onato)nickel(II) ([Ni(ipki)2], 1), bis(4-(2-methoxyethylamino)pent-3-en-2-onato)nickel(II) ([Ni(meki)2], 2), bis(4-(2-ethoxyethylamino)pent-3-en-2-onato)nickel(II) ([Ni(eeki)2], 3), bis(4-(3-methoxy-propylamino)-pent-3-en-2-onato)nickel(II) ([Ni(mpki)2], 4), and bis(4-(3-ethoxypropylamino)pent-3-en-2-onato)nickel(II) ([Ni(epki)2], 5). These compounds have been thoroughly characterized with regard to their purity and identity by means of nuclear magnetic resonance spectroscopy (NMR) and electron impact mass spectrometry (EI-MS). Contrary to other transition metal β-ketoiminates, the imino side chain strongly influences the structural geometry of the complexes, which was ascertained via single-crystal X-ray diffraction (XRD). As a result, the magnetic momenta of the molecules also differ significantly as evidenced by the magnetic susceptibility measurements employing Evan's NMR method in solution. Thermal analysis revealed the suitability of these compounds as new class of precursors for CVD of Ni containing materials. As a representative precursor, compound 2 was evaluated for the CVD of NiO thin films on Si(100) and conductive glass substrates. The as-deposited nanostructured layers were stoichiometric and phase pure NiO as confirmed by XRD, Rutherford backscattering spectrometry (RBS), and nuclear reaction analysis (NRA). X-ray photoelectron spectroscopy (XPS) indicated the formation of slightly oxygen-rich surfaces. The assessment of NiO films in electrocatalysis revealed promising activity for the oxygen evolution reactions (OER). The current densities of 10 mA cm-2 achieved at overpotentials ranging between 0.48 and 0.52 V highlight the suitability of the new Ni complexes in CVD processes for the fabrication of thin film electrocatalysts.
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Affiliation(s)
- Dennis Zywitzki
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | - Dereje H Taffa
- Chemical Technology 1, Institute of Chemistry, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Laura Lamkowski
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | - Manuela Winter
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | | | - Michael Wark
- Chemical Technology 1, Institute of Chemistry, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Anjana Devi
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
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