science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: 1,3-butadiyne Other Names: diacetylene Formula: C4H2 CAS-No.: 460-12-8 Study: spectroscopy Authors: H.-J. Haink, M. Jungen Title: Excited states of the polyacetylenes. Analysis of the near ultraviolet spectra of diacetylene and triacetylene Journal/Source: Chem. Phys. Lett., 61, 319-322, (1979); doi:10.1016/0009-2614(79)80652-1 Data: Energy/Wavelength range: 200 - 280 nm Resolution: Temperature: Temperature dependence: Pressure/Concentration: Phase: pH: Comments: The 2000–2800 Å system of diacetylene and the 2300–3000 Å system of triacetylene have been investigated. Author to whom correspondence should be addressed: (e-mail address):