Topochemical Polymerization of C70 Controlled by Monomer Crystal Packing

See allHide authors and affiliations

Science  27 Jul 2001:
Vol. 293, Issue 5530, pp. 680-683
DOI: 10.1126/science.1061434

You are currently viewing the abstract.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


Polymeric forms of C60 are now well known, but numerous attempts to obtain C70 in a polymeric state have yielded only dimers. Polymeric C70 has now been synthesized by treatment of hexagonally packed C70 single crystals under moderate hydrostatic pressure (2 gigapascals) at elevated temperature (300°C), which confirms predictions from our modeling of polymeric structures of C70. Single-crystal x-ray diffraction shows that the molecules are bridged into polymeric zigzag chains that extend along the c axis of the parent structure. Solid-state nuclear magnetic resonance and Raman data provide evidence for covalent chemical bonding between the C70 cages.

  • * Present address: Department of Physics, Lyman Laboratory, Harvard University, Cambridge, MA 02138, USA.

  • To whom correspondence should be addressed. E-mail: soldatov{at}

View Full Text