Curated dataset of thermal stability measurements for atomic layer deposition precursor compounds
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# ALD Precursor Thermal Stability Dataset# Version 1.1 (Revision) ## DescriptionA curated dataset of thermal stability measurements for atomic layer deposition(ALD) precursor compounds. This dataset contains 1117 records for ALD precursorcompounds, of which 719 (64.4%) include thermal stability measurements, covering918 unique molecular structures and 52 metal and metalloid elements. ## Files- ALD_precursor_raw_.csv : Complete raw dataset (1117 records x 21 columns)- ALD_precursor_cleaned_.csv : Cleaned dataset after curation (566 records x 16 columns)- dataset_schema_.csv : Column definitions with data types- column_dictionary_.csv : Allowed values for categorical columns- source_reference_table.csv : Source provenance lookup table- README_revision.txt : This file ## Changes in Revision (v1.1)- NEW: `application_status` column classifying compounds as experimentally_verified, commercially_available, or structural_analog- NEW: `ligand_class` column permanently stored (previously computed on-the-fly)- FIXED: Beta-diketonate SMARTS patterns now correctly identify chelated forms- Updated schema and column dictionary to reflect new columns ## Application Status Distribution (Raw Dataset)- experimentally_verified: 644 records- commercially_available: 75 records- structural_analog: 398 records ## Ligand Class Distribution (Raw Dataset)- Other: 428 records- Alkoxide: 295 records- Alkyl: 155 records- Cyclopentadienyl: 76 records- Halide: 73 records- Beta-diketonate: 47 records- Amido: 43 records ## Data Sources- Literature (peer-reviewed TGA/DSC): 644 records- Safety data sheets (SDS/SADT): 75 records- Public databases (no thermal data): 398 records ## Usage Notes1. Application status filtering: Researchers seeking only experimentally verified ALD precursors should filter by `application_status == 'experimentally_verified'`. For commercial availability, filter by `application_status == 'commercially_available'`. 2. Temperature type distinction: Onset temperature (t_onset_c) and decomposition temperature (t_decomp_c) represent different physical quantities and should not be combined without careful consideration. 3. SADT filtering: Records with sadt_flag = True report self-accelerating decomposition temperatures measured under fundamentally different conditions from laboratory TGA or DSC. Exclude these for homogeneous analyses. 4. Ligand class: The ligand_class column uses SMARTS substructure matching. Beta-diketonates are matched before carbonyls to avoid misclassification. Entries classified as 'Other' may have non-standard ligand frameworks. 5. Compound naming: common_name provides the most recognizable non-IUPAC identifier. iupac_name provides the IUPAC systematic name where available. 6. Source type: "literature" = records with TGA/DSC thermal stability data from peer-reviewed articles; "SDS" = safety data sheet SADT values; "database" = entries from public databases with physical properties but no original thermal stability measurements. 7. Duplicate awareness: duplicate_group_id links records for the same molecule from different sources. Records with conflict_flag = True have temperature ranges exceeding 200 degrees C within the group. 8. Cleaned vs. raw: The cleaned dataset applies conservative quality filters. Users may start from the raw dataset and apply custom criteria. 9. Metal coverage: Silicon-based precursors dominate (~53% of entries with SMILES). Verify sample sizes for non-silicon metal analyses. 10. Statistical limitations: Aggregate statistics describe dataset composition rather than establishing generalizable chemical trends. Inter-laboratory variability of 50-100 degrees C limits absolute temperature prediction. Subgroups with N < 20 have limited statistical power. ## CitationIf you use this dataset, please cite:[Full citation to be added upon publication] ## LicenseCreative Commons Attribution 4.0 International (CC BY 4.0) ## Data AvailabilityThe complete dataset is freely accessible at Zenodo:DOI: 10.5281/zenodo.19369337 ## ContactCorresponding author: Kyungjun Kang (kangkyungjun@kaist.ac.kr) ## Version History- v1.1 (2026): Revision - added application_status and ligand_class columns, fixed Beta-diketonate classification- v1.0 (2026): Initial release
# 原子层沉积(ALD)前驱体热稳定性数据集# 版本1.1(修订版) ## 数据集简介 本数据集为经过整理的原子层沉积(ALD)前驱体化合物热稳定性测量数据集,共包含1117条ALD前驱体化合物记录,其中719条(占比64.4%)包含热稳定性测量数据,涵盖918种独特分子结构以及52种金属与准金属元素。 ## 文件列表 - ALD_precursor_raw_.csv:完整原始数据集(1117条记录 × 21列) - ALD_precursor_cleaned_.csv:整理后的清洗数据集(566条记录 × 16列) - dataset_schema_.csv:包含数据类型的列定义表 - column_dictionary_.csv:分类列的允许取值表 - source_reference_table.csv:来源溯源查找表 - README_revision.txt:本文档 ## 版本1.1修订内容 - 新增`application_status`列,将化合物分类为**实验验证型(experimentally_verified)**、**商业可用型(commercially_available)**或**结构类似物(structural_analog)** - 新增`ligand_class`列并永久存储(此前为临时动态计算) - 修复:β-二酮盐(Beta-diketonate)SMARTS模式现已可正确识别螯合形式 - 更新数据集架构与列字典以适配新增列 ## 原始数据集应用状态分布 - 实验验证型:644条记录 - 商业可用型:75条记录 - 结构类似物:398条记录 ## 原始数据集配体类别分布 - 其他:428条记录 - 烷氧基(Alkoxide):295条记录 - 烷基(Alkyl):155条记录 - 环戊二烯基(Cyclopentadienyl):76条记录 - 卤化物(Halide):73条记录 - β-二酮盐(Beta-diketonate):47条记录 - 酰胺基(Amido):43条记录 ## 数据来源 - 文献(同行评审的热重分析/差示扫描量热法数据):644条记录 - 安全数据表(SDS/SADT):75条记录 - 公共数据库(无热稳定性数据):398条记录 ## 使用说明 1. 应用状态筛选:仅需实验验证型ALD前驱体的研究人员应通过`application_status == "experimentally_verified"`进行过滤;若需商业可用前驱体,则应将过滤条件设为`application_status == "commercially_available"`。 2. 温度类型区分:起始温度(t_onset_c)与分解温度(t_decomp_c)代表不同物理量,未经谨慎考量请勿混用。 3. 自加速分解温度(SADT)筛选:标记为`sadt_flag = True`的记录,其自加速分解温度的测试条件与实验室热重分析(TGA)或差示扫描量热法(DSC)存在本质差异,若需均质分析应排除此类记录。 4. 配体类别:`ligand_class`列基于SMARTS子结构匹配进行划分,为避免误分类,β-二酮盐的匹配优先级高于羰基类配体。归类为"其他"的条目可能包含非标准配体骨架。 5. 化合物命名:`common_name`(通用名称)提供最易识别的非IUPAC标识符;若可用,`iupac_name`(IUPAC系统命名)则提供国际纯粹与应用化学联合会标准命名。 6. 来源类型:"literature"指来自同行评审文章的热重/差示扫描量热法热稳定性数据记录;"SDS"指安全数据表中的自加速分解温度(SADT)值;"database"指来自公共数据库、仅包含物理性质但无原始热稳定性测量数据的条目。 7. 重复记录识别:`duplicate_group_id`用于关联同一分子不同来源的记录;若记录的`conflict_flag = True`,则表明该组内不同来源的温度范围差值超过200摄氏度。 8. 原始数据集与清洗数据集:清洗数据集应用了保守的质量过滤规则,用户也可基于原始数据集自行设定筛选标准。 9. 金属覆盖范围:含硅前驱体占比最高(约占含SMILES条目总数的53%),针对非硅金属的分析需验证样本量。 10. 统计局限性:聚合统计仅用于描述数据集构成,无法作为可推广的化学趋势依据。实验室间50-100摄氏度的测量差异限制了绝对温度预测的可靠性;样本量N<20的子组统计效力有限。 ## 引用说明 若使用本数据集,请引用:[待正式发表时补充完整引用信息] ## 授权协议 知识共享署名4.0国际许可协议(CC BY 4.0) ## 数据获取方式 完整数据集可在Zenodo平台免费获取:DOI: 10.5281/zenodo.19369337 ## 联系方式 通讯作者:Kyungjun Kang(邮箱:kangkyungjun@kaist.ac.kr) ## 版本历史 - v1.1(2026):修订版,新增`application_status`与`ligand_class`列,修复β-二酮盐分类问题 - v1.0(2026):初始发布



