Lisa McElwee‐White

Focused electron beam-induced deposition from Ru(CO)₄(fumaronitrile): incomplete carbonyl loss and nitrogen retention

Chinmai Sai Jureddy, Atul Chaudhary, Rashmi Singh, Lisa McElwee‐White et autres

-fumaronitrile)(tetracarbonyl)ruthenium(0), a novel FEBID precursor designed using a mechanism-based approach in which the ligand set consists of neutral two-electron donor ligands weakly bound to the metal centre atom. Nanostructures were fabricated using this precursor via FEBID, and their elemental composition was determined …

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Ion-induced fragmentation of the FIBID precursor iron tetracarbonyl acrolein

Shantonu Kumar Saha, Atul Chaudhary, Alicja Domaracka, Patrick Rousseau et autres

Abstract Focused ion beam-induced deposition (FIBID) relies on controlled ion-matter interactions, but the fundamental dissociation pathways of many potential precursor molecules remain largely unexplored. In this work, we investigate the ion-induced fragmentation of the FEBID/FIBID-relevant precursor Fe(CO) $$_4$$ 4 (acrolein) in the …

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Electron-induced dissociation of iron tetracarbonyl acrolein

Sukanta Das, Hlib Lyshchuk, Atul Chaudhary, Samrat Saha et autres

Abstract We studied the electron beam-induced fragmentation pattern of iron tetracarbonyl acrolein, Fe(CO) 4 (CH 2 =CHCHO). We probed both the anionic fragment formation due to dissociative electron attachment (DEA) via low-energy (0 to 12 eV) electron beam interaction and cationic fragment …

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Excited-state dissociation of (η 4 -diene)Ru(CO) 3 precursors for photo-assisted chemical vapour deposition

Cauê P. Souza, Alexey Verkhovtsev, Amy Walker, Nigel John Mason et autres

precursors (diene = BuD, MBuD, CHD, COT, CBuD). Ground-state DFT optimisations and Ru-ligand scans are combined with TD-DFT excitations and adiabatic singlet potential energy surface profiles to identify CO- and diene-loss pathways, while EDA-NOCV and natural transition orbital analyses rationalise the Ru-diene …

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Self‐Organized Metal‐Carbon Multilayers Formed by Ion Beam Induced Deposition from Trimethyl(methylcyclopentadienyl)platinum(IV)

Patrick M. Eckhert, J. Johnson, Lisa McElwee‐White, D. Howard Fairbrother

Abstract Films deposited from Trimethyl(methylcyclopentadienyl)platinum(IV) (MeCpPtMe 3 ) using 1–1.2 keV Ar + and H 2 + ion beams with low deposition rates (<100 nm h −1 ) exhibit spontaneous formation of well‐ordered alternating layers of ≈8 nm platinum and carbon, in …

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Photoassisted Chemical Vapor Deposition Using (η4-Diene)Ru(CO)3 Precursors

Christopher R. Brewer, Bidhu Bhusan Das, Rashmi Singh, DipakKr. Bhattacharyya et autres

Six (η 4 -diene)Ru(CO) 3 (diene = cyclooctatetraene, cyclohexadiene, cyclobutadiene, 1,3-butadiene, isoprene, and 2,3-dimethyl-1,3-butadiene) complexes that undergo photolytic loss of diene and/or CO ligands at room temperature have been synthesized and prescreened for their utility in Ru photoassisted chemical vapor deposition (PACVD). …

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Photochemistry of RMn(CO)5 Complexes as Precursor Candidates for Photoassisted Chemical Vapor Deposition

Bidhu Bhusan Das, Amy V. Walker, Lisa McElwee‐White

The alkyl manganese pentacarbonyl complexes RMn(CO) 5 (R = CH 3, PhCH 2 ) were synthesized as potential precursors for area selective deposition (ASD) by photoassisted chemical vapor deposition (PACVD). Both CH 3 Mn(CO) 5 and PhCH 2 Mn(CO) 5 are sufficiently …

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Expanding the Scope of Mo(III) Precursor Molecules for Vapor Phase Growth of Mo‐Based Materials: Mo(III) Guanidinate

Taylor M. Currie, A Brodie, Diego R. Javier‐Jiménez, Bhumika et autres

Abstract The synthesis and characterization of tris(N,N’‐di‐isopropyl‐2‐dimethylamido‐guanidinate)molybdenum(III), Mo(iPr‐GND)3 is reported. This complex expands the known scope of tris(guanidinate)M(III) complexes to include Mo, and adds to the very limited knowledge of homoleptic mononuclear Mo(III) coordination complexes. Volatility of Mo(iPr‐GND)3 is demonstrated via thermogravimetric …

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Low temperature XPS of (η4-cyclooctatetraene)Ru(CO)3

Christopher R. Brewer, Jean-François Veyan, Xin Kang, Lisa McElwee‐White et autres

X-ray photoelectron spectroscopy was used to analyze an authentic sample of (η4-cyclooctatetraene)Ru(CO)3 held at 173 K to prevent sublimation of the compound during measurement. This precursor has previously shown utility for photoassisted chemical vapor deposition of Ru species onto alkanethiolate self-assembled monolayers. …

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Ion-induced surface reactions and deposition from Pt(CO) 2 Cl 2 and Pt(CO) 2 Br 2

Mohammed K. Abdel‐Rahman, Patrick M. Eckhert, Atul Chaudhary, J. Johnson et autres

Ion beam-induced deposition (IBID) using Pt(CO) 2 Cl 2 and Pt(CO) 2 Br 2 as precursors has been studied with ultrahigh-vacuum (UHV) surface science techniques to provide insights into the elementary reaction steps involved in deposition, complemented by analysis of deposits formed …

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Microwave spectrum and molecular structure calculations for η4-butadiene ruthenium tricarbonyl

Adam M. Daly, Kristen K. Roehling, Rhett P. Hill, Myla G. Gonzalez et autres

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Electron-induced ligand loss from iron tetracarbonyl methyl acrylate

Hlib Lyshchuk, Atul Chaudhary, Thomas F. M. Luxford, MiloŠ Lj. Ranković et autres

We probe the separation of ligands from iron tetracarbonyl methyl acrylate (Fe(CO) 4 (C 4 H 6 O 2 ) or Fe(CO) 4 MA) induced by the interaction with free electrons. The motivation comes from the possible use of this molecule as …

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