Rotational Spectrum of 2,3-Butadienal for Interstellar Searches

Laboratory measurements of the rotational spectrum for the molecule 2,3-butadienal in the 150–485 GHz frequency range. The dataset provides high-precision spectroscopic parameters to enable astronomical searches, with results from a search in public data toward TMC-1, Sgr B2(N), and G +0.693–0.027. The data was published by Laurent Margulès on figshare in March 2026.

Use Cases

• Predicting transition frequencies for astronomical observations based on the provided spectroscopic model.
• Conducting targeted searches for 2,3-butadienal in other interstellar sources based on the high-precision parameters.
• Informing models of molecular formation pathways in the interstellar medium based on the derived column density upper limits.
• Calibrating or validating quantum chemical calculations for similar aldehydes based on the laboratory measurements.

Strengths

• Provides the first laboratory measurements of the rotational spectrum for 2,3-butadienal.
• Spectroscopic parameters are derived from data in the 150–485 GHz frequency range.
• Analysis includes the ground state and two lowest excited vibrational states.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is small (316.3 KB), indicating limited scope.

Provenance

Source

figshare

Collection Method

Laboratory measurements and quantum chemical calculations.

Time Range

Laboratory data collection date is unspecified.

Freshness

Last updated 2026-03-25 19:33:18; freshness should be verified.

Geography

Astronomical searches targeted TMC-1, Sgr B2(N), and G +0.693–0.027.