Citation: . Accelerating the detection of unfeasible hypothetical zeolites via symmetric local interatomic distance criteria[J]. Chinese Chemical Letters, ;2017, 28(7): 1365-1368. doi: 10.1016/j.cclet.2017.04.010 shu

Accelerating the detection of unfeasible hypothetical zeolites via symmetric local interatomic distance criteria

Received Date: 3 February 2017
Revised Date: 25 February 2017
Accepted Date: 10 March 2017
Available Online: 18 July 2017

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In silico prediction of potential synthetic targets is the prerequisite for function-led discovery of new zeolites. Millions of hypothetical zeolitic structures have been predicted via various computational methods, but most of them are experimentally inaccessible under conventional synthetic conditions. Screening out unfeasible structures is crucial for the selection of synthetic targets with desired functions. The local interatomic distance (LID) criteria are a set of structure rules strictly obeyed by all existing zeolite framework types. Using these criteria, many unfeasible hypothetical structures have been detected. However, to calculate their LIDs, all hypothetical structures need to be fully optimized without symmetry constraints. When evaluating a large number of hypothetical structures, such calculations may become too computationally expensive due to the forbiddingly high degree of freedom. Here, we propose calculating LIDs among structures optimized with symmetry constraints and using them as new structure evaluation criteria, i.e., the LID_sym criteria, to screen out unfeasible hypothetical structures. We find that the LID_sym criteria can detect unfeasible structures as many as the original non-symmetric LID criteria do, yet require at least one order of magnitude less computation at the initial geometry optimization stage.
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