Structural trends in one and two dimensional coordination polymers of cadmium(ii) with halide bridges and pyridine-type ligands
Hu, Chunhua; Li, Qi; Englert, Ulli; CrystEngComm 5 (2003) 519–; doi:10.1039/b314522k

data_7216326
_publ_section_title
;
 Structural trends in one and two dimensional coordination polymers of
 cadmium(ii) with halide bridges and pyridine-type ligands
;
_journal_issue                   94
_journal_name_full               CrystEngComm
_journal_page_first              519
_journal_paper_doi               10.1039/b314522k
_journal_volume                  5
_journal_year                    2003
_chemical_formula_sum            'C12 H14 Br2 Cd N2'
_chemical_formula_weight         458.47
_chemical_name_common
;catena-(bis(mu-bromo)-bis(3-methylpyridine)-cadmium(ii))
(Compound 11)
;
_chemical_name_systematic
;
catena-[bis(\m-bromo)-bis(3-methylpyridine)-cadmium(ii)] (Compound 11)
;
_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_date             30-OCT-03
_audit_creation_method           SHELXTL
_audit_update_record             ' ?'
_cell_angle_alpha                90.00
_cell_angle_beta                 91.971(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   3.9800(6)
_cell_length_b                   14.738(2)
_cell_length_c                   12.1051(17)
_cell_measurement_reflns_used    6848
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.33
_cell_measurement_theta_min      2.18
_cell_volume                     709.63(18)
_computing_cell_refinement       'SMART (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT+ (Bruker, 1999)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXTL (Sheldrick, 1998)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 1998)'
_computing_structure_solution    'SHELXTL (Sheldrick, 1998)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'omega 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  0.0422
_diffrn_reflns_av_sigmaI/netI    0.0421
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6848
_diffrn_reflns_theta_full        28.33
_diffrn_reflns_theta_max         28.33
_diffrn_reflns_theta_min         2.18
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    7.149
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.678066
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.146
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'needle colorless 0.25x0.07x0.06 faces'
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.545
_refine_diff_density_min         -0.381
_refine_diff_density_rms         0.106
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     80
_refine_ls_number_reflns         1765
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.001
_refine_ls_R_factor_all          0.0385
_refine_ls_R_factor_gt           0.0284
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0295P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0640
_refine_ls_wR_factor_ref         0.0672
_reflns_number_gt                1442
_reflns_number_total             1765
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b314522k.txt
_cod_data_source_block           hc239
_cod_original_cell_volume        709.61(18)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7216326