# Structural Fidelity As described in the original [QMOF Database paper](https://doi.org/10.1016/j.matt.2021.02.015), the structural fidelity of MOF crystal structures is an incredibly challenging but important factor to consider when constructing DFT-based property databases. Many experimental MOF crystal structures have missing atoms (e.g. missing H atoms), under or overbonded atoms, unresolved disorder, charge-imbalances (e.g. missing or too many ions), and related issues. Similarly, some hypothetical MOF databases have building blocks with under or overbonded carbon atoms due to faulty functionalization routines. While significant effort was put into maximizing the structural fidelity of materials on the QMOF Database, we acknowledge that there are inevitably structures in the database that are not pristine. If you find a material with poor structural fidelity, we ask you to [open an issue](https://github.com/arosen93/QMOF/issues) listing the QMOF IDs of any problematic structures along with an explanation of the structural error. While we are not in a position to correct structures at this time, they will be removed from the QMOF Database when identified by the community, and a new version of the database will be minted. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.materialsproject.org/apps/explorer-apps/mof-explorer/structure-details/structural-fidelity.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.