Mild hydrothermal synthesis, structure and characterization of the vanadyl phosphate hydrate Pb(VOPO4)2·3H2O: the formation of spin dimers in a three dimensional crystal structure
Chen, Yan; Liu, Tao; He, Cheng; Duan, Chunying; Journal of Materials Chemistry 22 (2012) 19872–; doi:10.1039/c2jm32976j

data_7208616
_publ_section_title
;
 Mild hydrothermal synthesis, structure and characterization of the
 vanadyl phosphate hydrate Pb(VOPO4)2&#x00B7;3H2O: the formation of spin
 dimers in a three dimensional crystal structure
;
_journal_issue                   37
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              19872
_journal_paper_doi               10.1039/c2jm32976j
_journal_volume                  22
_journal_year                    2012
_chemical_formula_sum            'O13 P2 Pb V2'
_chemical_formula_weight         579.01
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   constr
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.007(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.292(4)
_cell_length_b                   7.552(3)
_cell_length_c                   12.557(5)
_cell_measurement_reflns_used    2186
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      3.24
_cell_volume                     976.0(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0651
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2042
_diffrn_reflns_theta_full        26.73
_diffrn_reflns_theta_max         26.73
_diffrn_reflns_theta_min         3.15
_exptl_absorpt_coefficient_mu    19.485
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            GREEN
_exptl_crystal_density_diffrn    3.940
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       CUBIC
_exptl_crystal_F_000             1048
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.420
_refine_diff_density_min         -1.752
_refine_diff_density_rms         0.259
_refine_ls_extinction_coef       0.00160(19)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         2042
_refine_ls_number_restraints     56
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0366
_refine_ls_R_factor_gt           0.0316
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0100P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0700
_refine_ls_wR_factor_ref         0.0722
_reflns_number_gt                1853
_reflns_number_total             2042
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c2jm32976j.txt
_cod_data_source_block           3
_cod_database_code               7208616