However , similar asymmetric molecules like cyanoacetylene have been observed , and its presence in those environments is therefore suspected .
As of 2006 , the detection of dicyanoacetylene in the interstellar medium has been impossible , because its symmetry means it has no rotational microwave spectrum .
Similar asymmetric molecules like cyanoacetylene have been observed , and its presence in those environments is therefore suspected .
As of 2006 , the detection of dicyanoacetylene in the interstellar medium has been impossible , because its symmetry means it has no rotational microwave spectrum .