Multidimensional (0D to 3D) Alkaline-Earth Metal Diphosphonates: Synthesis, Structural Diversity, and Luminescence Properties.
Senthil Raja, Duraisamy; Lin, Pin-Chun; Liu, Wei-Ren; Zhan, Jun-Xiang; Fu, Xin-Yi; Lin, Chia-Her; Inorganic chemistry 54 (2015) 4268–4278; doi:10.1021/ic5029993

data_4342764
_publ_section_title
;
 Multidimensional (0D to 3D) Alkaline-Earth Metal Diphosphonates:
 Synthesis, Structural Diversity, and Luminescence Properties.
;
_journal_issue                   9
_journal_name_full               'Inorganic chemistry'
_journal_page_first              4268
_journal_page_last               4278
_journal_paper_doi               10.1021/ic5029993
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C15 H58 Mg N4 O24 P6'
_chemical_formula_weight         888.78
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           167
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  '-R 3 2"c'
_symmetry_space_group_name_H-M   'R -3 c :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            12
_cell_length_a                   16.5827(6)
_cell_length_b                   16.5827(6)
_cell_length_c                   52.106(2)
_cell_measurement_reflns_used    91
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      20.3554
_cell_measurement_theta_min      4.2278
_cell_volume                     12408.8(8)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2 (Bruker, 2008)'
_computing_data_reduction        'Bruker APEX2'
_computing_molecular_graphics    'Bruker SHELXTL (Bruker, 2008)'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_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  0.0481
_diffrn_reflns_av_sigmaI/netI    0.0354
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       69
_diffrn_reflns_limit_l_min       -68
_diffrn_reflns_number            23792
_diffrn_reflns_theta_full        28.46
_diffrn_reflns_theta_max         28.46
_diffrn_reflns_theta_min         1.62
_exptl_absorpt_coefficient_mu    0.357
_exptl_absorpt_correction_T_max  0.9066
_exptl_absorpt_correction_T_min  0.8852
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.427
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       columnar
_exptl_crystal_F_000             5640
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.28
_refine_diff_density_max         1.356
_refine_diff_density_min         -0.849
_refine_diff_density_rms         0.097
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     154
_refine_ls_number_reflns         3465
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0770
_refine_ls_R_factor_gt           0.0566
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1253P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1788
_refine_ls_wR_factor_ref         0.1937
_reflns_number_gt                2396
_reflns_number_total             3465
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5029993_si_002.cif
_cod_data_source_block           1
_cod_depositor_comments
'Adding full bibliography for 4342764--4342767.cif.'
_cod_original_sg_symbol_H-M      'R -3 c'
_cod_database_code               4342764