New on CTAN: transition-metals

Faris Hameed submitted the

                 transition-metals

package.

Version number: 1.0 2026-05-18
License type: lppl1.3c

Summary description: Hybridization diagrams for transition metal complexes

Announcement text:
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Subject: transition-metals
New release v1.0 – package for transition metal electronic configurations and Hybridization diagrams for transition metal complexes
Date: 18 May 2026
We are pleased to announce the first release of the transition-metals package for drawing hybridization diagrams of transition metal complexes.
Features
•       Single command: \Complex{atomic number}{metal}{charge}{ligand}{coordination number}
•       Supports sp, sp², dsp², sp³d, d²sp³ hybridization
•       Automatic distinction between strong ligands (low spin) and weak ligands (high spin)
•       First row (Z=21–30): depends on ligand type (NH₃, CN⁻, CO, en)
•       Second and third rows (Z≥31): all ligands treated as strong
•       Fills orbitals used in hybridization (d, s, p)
•       Automatically calculates: d electron count, magnetic property (diamagnetic/paramagnetic), EAN
Changes
•       Renamed main command from \ComplexStrong/\ComplexWeak to \Complex
•       Fixed Extra } error with \ComplexStrong{26}{Fe}{2+}{(CN)}{6}
•       Added hybridization support for coordination numbers 2, 3, and 5
•       Replaced \drawDElectronsPaired with safer electron drawing
Bug Fixes
•       Fixed missing yellow fill for sp, sp², sp³d hybridizations
•       Fixed incorrect electron configuration for elements Z > 36
Installation
tlmgr install chemhybrid (CTAN submission pending)
Documentation
transition-metals-doc.pdf


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This package is located at
    https://mirrors.ctan.org/macros/unicodetex/latex/transition-metals

More information is at
    https://www.ctan.org/pkg/transition-metals

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    Thanks for the upload.

      For the CTAN Team
     Erik Braun

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