data_2012740
_journal_name_full  'Acta Crystallographica, Section C'
_journal_year  2002
_journal_volume  58
_journal_page_first  i82
_journal_page_last  i84
_publ_section_title
;
Synthetic hydrocerussite 2PbCO~3~.Pb(OH)~2~ by X-ray powder diffraction
;
loop_
_publ_author_name
  'Martinetto, Pauline'
  'Anne, Michel'
  'Dooryh\'ee, Eric'
  'Walter, Philippe'
  'Tsoucaris, Georges'
_chemical_name_common  hydrocerussite
_chemical_formula_moiety  'C2 H2 O8 Pb3'
_chemical_formula_sum  'C2 H2 O8 Pb3'
_chemical_formula_iupac  '2Pb C O3, Pb (OH)2'
_chemical_formula_weight  775.6
_symmetry_cell_setting  trigonal
_symmetry_space_group_name_H-M  'R -3 m'
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
  1 x,y,z
  2 -y,x-y,z
  3 -x+y,-x,z
  4 y,x,-z
  5 x-y,-y,-z
  6 -x,-x+y,-z
  7 -x,-y,-z
  8 y,-x+y,-z
  9 x-y,x,-z
  10 -y,-x,z
  11 -x+y,y,z
  12 x,x-y,z
  13 x+2/3,y+1/3,z+1/3
  14 -y+2/3,x-y+1/3,z+1/3
  15 -x+y+2/3,-x+1/3,z+1/3
  16 y+2/3,x+1/3,-z+1/3
  17 x-y+2/3,-y+1/3,-z+1/3
  18 -x+2/3,-x+y+1/3,-z+1/3
  19 -x+2/3,-y+1/3,-z+1/3
  20 y+2/3,-x+y+1/3,-z+1/3
  21 x-y+2/3,x+1/3,-z+1/3
  22 -y+2/3,-x+1/3,z+1/3
  23 -x+y+2/3,y+1/3,z+1/3
  24 x+2/3,x-y+1/3,z+1/3
  25 x+1/3,y+2/3,z+2/3
  26 -y+1/3,x-y+2/3,z+2/3
  27 -x+y+1/3,-x+2/3,z+2/3
  28 y+1/3,x+2/3,-z+2/3
  29 x-y+1/3,-y+2/3,-z+2/3
  30 -x+1/3,-x+y+2/3,-z+2/3
  31 -x+1/3,-y+2/3,-z+2/3
  32 y+1/3,-x+y+2/3,-z+2/3
  33 x-y+1/3,x+2/3,-z+2/3
  34 -y+1/3,-x+2/3,z+2/3
  35 -x+y+1/3,y+2/3,z+2/3
  36 x+1/3,x-y+2/3,z+2/3
_cell_length_a  5.2465(6)
_cell_length_b  5.2465(6)
_cell_length_c  23.702(3)
_cell_angle_alpha  90.0
_cell_angle_beta  90.0
_cell_angle_gamma  120.0
_cell_volume  565.000(4)
_cell_formula_units_Z  3
_cell_measurement_temperature  295
_exptl_crystal_density_diffrn  6.84
_exptl_crystal_density_meas  6.82
_diffrn_ambient_temperature  295
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_thermal_displace_type
_atom_site_occupancy
_atom_site_type_symbol
  Pb1 0.00000000 0.00000000 0.21510(5) 0.0172(2) Uiso 1 Pb
  Pb2 0.9158(3) -0.9158(3) 0.0016(3) 0.0215(9) Uiso 0.16666 Pb
  C1 0.00000000 0.00000000 0.4304(15) 0.028(2) Uiso 1 C
  O1 0.8568(11) -0.8568(11) 0.4318(5) 0.028(2) Uiso 1 O
  O2 -0.293(4) 0.293(4) 0.0200(8) 0.010(8) Uiso 0.3333 O
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_site_symmetry_2
_geom_bond_distance
_geom_bond_publ_flag
  Pb1 O1 32_565 2.674(6) yes
  Pb1 O1 25_454 3.261(10) yes
  Pb1 O2 21_555 2.36(2) yes
  Pb2 O1 19_635 2.558(12) yes
  Pb2 O1 27_744 2.740(11) yes
  Pb2 O2 2_655 2.51(2) yes
  Pb2 O2 8_645 2.430(17) yes
  Pb2 O2 1_645 1.95(2) yes
  Pb2 O2 7_545 2.90(2) yes
  C1 O1 1_465 1.302(6) yes