Zinc and cadmium 2-pyrazinephosphonates: Syntheses, structures and luminescent properties.
Ma, Yun-Sheng; Tang, Xiao-Yan; Yin, Wen-Yu; Wu, Bin; Xue, Feng-Feng; Yuan, Rong-Xin; Roy, Soumyajit; Dalton transactions (Cambridge, England : 2003) 41 (2012) 2340–2345; doi:10.1039/c1dt11250c

data_7017605
_publ_section_title
;
 Zinc and cadmium 2-pyrazinephosphonates: Syntheses, structures and
 luminescent properties.
;
_journal_issue                   8
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2340
_journal_page_last               2345
_journal_paper_doi               10.1039/c1dt11250c
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C4 H5 N2 O3 P'
_chemical_formula_sum            'C4 H5 N2 O3 P'
_chemical_formula_weight         160.07
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.64(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.7997(16)
_cell_length_b                   11.293(2)
_cell_length_c                   7.4265(15)
_cell_measurement_reflns_used    5108
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      3.175
_cell_volume                     653.9(2)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku, 2005)'
_computing_data_reduction        CrystalClear
_computing_molecular_graphics    'Bruker SHELXTL/PC (Sheldrick, 1999)'
_computing_publication_material  'Bruker SHELXTL/PC and PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0637
_diffrn_reflns_av_sigmaI/netI    0.0502
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            6664
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.18
_exptl_absorpt_coefficient_mu    0.364
_exptl_absorpt_correction_T_max  0.925
_exptl_absorpt_correction_T_min  0.895
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku, 2005)'
_exptl_crystal_density_diffrn    1.626
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.278
_refine_diff_density_min         -0.306
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     97
_refine_ls_number_reflns         1499
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0912
_refine_ls_R_factor_gt           0.0590
_refine_ls_shift/su_max          0.020
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0481P)^2^+2.0376P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1483
_refine_ls_wR_factor_ref         0.1648
_reflns_number_gt                1031
_reflns_number_total             1499
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1dt11250c.txt
_cod_data_source_block           123
_cod_original_sg_symbol_H-M      ' P 21/c'
_cod_database_code               7017605