SYMMETRY PM7 Lead difluoride <Pb-F> <F-Pb-F> GR=DGZSI83 F 0.00000000 +0 0.0000000 +0 0.0000000 +0 0 0 0 Pb 2.03300000 +1 0.0000000 +0 0.0000000 +0 1 0 0 F 2.03300000 +0 97.2000000 +1 0.0000000 +0 2 1 0 2 1 3