The absorption spectrum of IrC at wavelength between 445 and 500 nm has been investigated using the technique of laser vaporization/reaction with free-jet expansion and cavity ring-down laser absorption spectroscopy. This wavelength region covers the (0,0), (1,0) and (2,0) bands of the L(2)Phi(7/2)-X(2)Delta(5/2) transition. IrC molecules were produced by reacting laser vaporized iridium atoms and methane. Analysis of the spectra gives refined band origins, vibrational and rotational constants for the L(2)Phi(7/2) level. (C) 2004 Elsevier B.V. All rights reserved.