NIST Diatomic Spectral Database - SRD 114

This database contains the rotational spectral lines observed and reported in the open literature for 121 diatomic molecules through July 2002. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty, and reference are given for each transition reported. Derived molecular properties, such as rotational constants, hyperfine structure constants, electric dipole moments, rotational g-factors and internuclear distances, are listed with one standard deviation uncertainties for all species.

Data and Resources

Field Value
accessLevel public
accrualPeriodicity irregular
bureauCode {006:55}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier FDB5909746695200E043065706813E54113
landingPage https://www.nist.gov/pml/diatomic-spectral-database
language {en}
license https://www.nist.gov/open/license
modified 2005-11-01 00:00:00
programCode {006:052}
publisher National Institute of Standards and Technology
references {http://physics.nist.gov/PhysRefData/MolSpec/Diatomic/Html/intro.html}
resource-type Dataset
source_datajson_identifier true
source_hash 059cbc3fa9554b23e5abe04e542e75f6b0b565c2
source_schema_version 1.1
theme {"Atomic / molecular / quantum","Standards:Reference data","Chemistry:Analytical chemistry"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • diatomic-molecules
  • electric-dipole-moments
  • geo
  • geoss
  • hyperfine-structure
  • internuclear-distances
  • microwave-spectra
  • national
  • north-america
  • rotational-constants
  • rotational-spectra
  • united-states
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Francis J. Lovas
maintainer_email francis.lovas@nist.gov
metadata_created 2025-11-21T18:47:17.025311
metadata_modified 2025-11-21T18:47:17.025315
notes This database contains the rotational spectral lines observed and reported in the open literature for 121 diatomic molecules through July 2002. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty, and reference are given for each transition reported. Derived molecular properties, such as rotational constants, hyperfine structure constants, electric dipole moments, rotational g-factors and internuclear distances, are listed with one standard deviation uncertainties for all species.
num_resources 1
num_tags 15
title NIST Diatomic Spectral Database - SRD 114