By employing the coupling reaction of trans-PtI2 (Et3) 2 with CH bonds in alkynes as the key step, two new 60° organometallic subunits with different size from 3, 6- dibromophenanthrene were prepared in reasonable yields. The X-ray structures of both di- Pt (II) diiodide complexes showed that they were indeed suitable candidates for 60° building units. By utilizing these novel linkers as ditopic acceptor subunits, three M3L2 trigonal- ...