The Synthesis of New 60 deg Organometallic Subunits and Self-Assembly of Three-Dimensional M_3L_2 Trigonal-Bipyramidal Cages

摘要

By employing the coupling reaction of trans-PtI_2(Et_3)_2 with C-H bonds in alkynes as the key step,two new 60 deg 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 deg building units.By utilizing these novel linkers as ditopic acceptor subunits,three M_3L_2 trigonal-bipyramidal (TBP) cages were formed.All three TBP cages were characterized with multinuclear NMR and electrospray ionization mass spectrometry (ESI-MS) along with element analysis.