We have obtained time-of-flight mass spectra for metal complexes of tetrakis(cumylphenoxy)phthalocyanines, MPc(CP)(4), by pulsed laser ablation from frozen benzene solutions. The Pc complexes themselves act as chromophores ibr the 355 and 580 nm excitation wavelengths used. Prior vapor pressure osmometry (VPO) and UV/visible absorption studies indicate an increasing degree of molecular association in solution in the order Pb < Cu < Ni < Pd < Hg. The mass spectra of all but the Hg-containing sample are dominated by the monomeric molecular ion (ML(+)) peak. The HgPc(CP)(4) sample shows a pattern containing strong peaks due to HgL(2)(+), Hg(2)L(3)(+), Hg(3)L(4)(+), and other complex molecular ions. We suggest that this is consistent with formation of a cofacial Hg-linked polymer or oligomer in solution, as proposed in a previous VPO and UV/visible spectroscopy study.