Synthesis, spectroscopic properties, and electrochemistry of heteroleptic rare earth double-decker complexes with phthalocyaninato and meso-tetrakis (4-chlorophenyl)porphyrinato ligandsElectronic supplementary information (ESI) available: reaction yields, analytical and mass spectroscopic data for 1?14 (Table S1), plot of wavenumber of the near-IR absorption at 1148?1418 nm vs. ionic radius of Miii for 1?14 (Fig. S1), and plot of the half-wave potentials of 1?14 as a function of the ionic radius of Miii (Fig. S2). See http://www.rsc.org/suppdata/nj/b4/b404998e/