fix: [Phase 3] Implement Delocalization Index (DI)#7
Conversation
- Add delocalization.py module with 2-center and 3-center DI calculations - Implement aromaticity indices (AI, PDI, FLU) from DI matrices - Add bond classification based on DI values - Create comprehensive test suite with 35 passing tests - Update bonding __init__.py to export new DI classes and functions Fixes #4
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Kimi CLI ReviewGenerated with PR Review: Implement Delocalization Index (DI)总体评价PR 实现了离域指数(DI)计算模块,包含2中心/3中心DI、芳香性指数(AI/PDI/FLU)和键型分类。代码结构清晰,测试覆盖较全面(35个测试),无阻塞性问题。 🔴 严重问题(Blocking)无。 🟡 中等风险(Residual Risks / 需关注)
🟢 低优先级 / 建议
测试评估
结论无阻塞性问题,可合并。 但建议在合并前或后续迭代中:
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Summary
This PR implements the Delocalization Index (DI) for analyzing electron pair sharing and aromaticity in molecular systems. The implementation includes 2-center and 3-center DI calculations, aromaticity indices (AI, PDI, FLU), and bond classification based on DI values.
Changes
pymultiwfn/bonding/delocalization.py: New module implementing:
delocalization_index(): 2-center DI calculationthree_center_delocalization_index(): 3-center DI for multi-center bondscalculate_di_matrix(): Full DI matrix generationclassify_bond_from_di(): Bond type classificationcalculate_aromaticity_index(): Ring aromaticity measurecalculate_pdi(): Para-Delocalization Index for 6-membered ringscalculate_flu(): Aromatic Fluctuation IndexDelocalizationIndexclass: Main analysis interfacepymultiwfn/bonding/init.py: Updated to export new DI classes and functions
tests/bonding/test_delocalization_index.py: Comprehensive test suite with 35 passing tests covering:
Testing
All 35 tests pass:
API Example
Fixes #4