Limiting properties of (MgO)n and (CaO)n clusters

Literature Information

Publication Date 2001-06-27
DOI 10.1039/B103738M
Impact Factor 3.676
Authors

Itai Panas


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Abstract

The limiting behaviours of bond distances and binding energies are studied for small alkaline earth oxide clusters, employing the B3LYP density functional. Validation of the applicability of density functional theory is made on selected clusters by MP4 calculations. Basis set effects on cluster structures and binding energies are determined, and comparisons between (MgO)1–16 and (CaO)1–12 are made. For CaO, the need to include at least two d-polarisation functions for a proper description of the cluster binding energy is emphasised. Consistency in limiting binding energies for monolayers of MgO and CaO, determined here to be 8.3 eV and 9.2 eV respectively, in conjunction with MP4 calculations on (MgO)4, is employed to critically reassess claimed converged bulk binding energies for small cube-like MgO clusters.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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