In a 2017 report by
Cordiner et al.,
malononitrile, CH2(CN)2, was one of several species sought for but not detected toward
TMC-1 using observations by the
Robert C. Byrd Green Bank Telescope.
A previous search by
Matthews and Sears described in
a 1986 publication had also failed to detect malononitrile. Subsequent experimental characterization of the
rotational spectrum of malononitrile and one of its isocyano derivatives by
Motiyenko et al. will improve the
possibility of detecting these C3H2N2 compounds in interstellar sources.