Official Resources
- Code Archive: https://zenodo.org/records/3252298
- Previous Release: https://zenodo.org/record/2648092
- Manual: http://ion.chem.usu.edu/~boldyrev/software/AdNDP_2.0_manual.pdf
- Publication: Tkachenko, N.V. and Boldyrev, A.I., Phys. Chem. Chem. Phys. 21, 9590 (2019)
Overview
AdNDP is the Adaptive Natural Density Partitioning method for revealing intuitive chemical bonding patterns, including both localized Lewis-like bonds and multicenter delocalized bonding. The publicly archived AdNDP 2.0 code supports modern bonding analysis workflows and was explicitly released alongside a publication on excited-state bonding analysis.
Scientific domain: Adaptive bonding analysis, multicenter bonding, density partitioning
Target user community: Theoretical chemists studying unconventional bonding, delocalization, and multicenter bond patterns
Theoretical Methods
- Adaptive Natural Density Partitioning (AdNDP)
- Localized and multicenter bonding interpretation
- Bonding analysis for ground and excited electronic states
- Natural-density-based bond recovery
Capabilities (CRITICAL)
- Identifies localized and multicenter bonding patterns
- Useful for unconventional clusters, delocalized systems, and excited-state bonding analysis
- Publicly archived AdNDP 2.0 code with manual and publication
- Widely recognized bonding-analysis method beyond standard Lewis representations
Sources: Zenodo code archive, AdNDP manual, and PCCP publication
Key Strengths
Multicenter Bonding Insight:
- Recovers intuitive bonding pictures in unusual systems
- Handles delocalized and multicenter interactions
- Strong reputation in cluster and excited-state bonding studies
Method Distinctiveness:
- Different from QTAIM critical-point analysis
- Different from standard NBO localization alone
- Especially valuable for nonclassical bonding patterns
Public Availability:
- Archived public code
- Manual available
- Direct publication association
Inputs & Outputs
-
Input formats:
- Wavefunction- or density-derived quantities required by the AdNDP workflow as documented by the official manual
-
Output data types:
- Adaptive bonding patterns
- Localized and multicenter bond descriptors
- Analysis summaries of bonding motifs
Workflow and Usage
- Generate the required electronic-structure data.
- Run the AdNDP workflow using the public code/manual guidance.
- Inspect recovered localized and multicenter bonding patterns.
- Use the results to interpret nonclassical or excited-state bonding.
Performance Characteristics
- Specialized bonding-interpretation workflow
- Most valuable for challenging or nonclassical bonding problems
- Focused on conceptual interpretation rather than generic property extraction
Limitations & Known Constraints
- Method scope: Focused on adaptive bonding patterns rather than broad topology or population suites
- Workflow specialization: Best suited to users already familiar with bonding analysis concepts
- Distribution model: Public archive/manual rather than a mainstream package ecosystem
Comparison with Other Tools
- vs NBO: AdNDP is stronger for multicenter bonding and nonclassical bond patterns
- vs QTAIM tools: AdNDP emphasizes adaptive bond recovery rather than critical points and basins
- Unique strength: Intuitive localized-plus-multicenter bonding analysis
Application Areas
- Boron and cluster chemistry
- Delocalized and nonclassical bonding
- Excited-state bonding analysis
- Multicenter bond interpretation
Community and Support
- Public Zenodo archive
- Manual available
- Strong literature presence in the Boldyrev bonding-analysis ecosystem
Verification & Sources
Primary sources:
- Code archive: https://zenodo.org/records/3252298
- Previous release: https://zenodo.org/record/2648092
- Manual: http://ion.chem.usu.edu/~boldyrev/software/AdNDP_2.0_manual.pdf
- Tkachenko, N.V. and Boldyrev, A.I., PCCP 21, 9590 (2019)
Confidence: VERIFIED
Verification status: ✅ VERIFIED
- Public code archive: ACCESSIBLE
- Manual: REFERENCED
- Publication: AVAILABLE
- Primary use case: Adaptive multicenter chemical-bonding analysis