Polymorphism in Homochiral Zinc Phosphonates
Xun-Gao Liu; Song-Song Bao; Yi-Zhi Li; Li-Min Zheng; Inorganic Chemistry 47 (2008) 5525–5527; doi:10.1021/ic800663t

data_4305676
_publ_section_title
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Polymorphism in Homochiral Zinc Phosphonates
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5525
_journal_page_last               5527
_journal_paper_doi               10.1021/ic800663t
_journal_volume                  47
_journal_year                    2008
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C18 H25 Cl N2 O6 P2 Zn2'
_chemical_formula_sum            'C18 H25 Cl N2 O6 P2 Zn2'
_chemical_formula_weight         593.53
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9611(10)
_cell_length_b                   9.9772(12)
_cell_length_c                   26.791(3)
_cell_measurement_reflns_used    968
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      16.82
_cell_measurement_theta_min      2.39
_cell_volume                     2395.3(5)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2000)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart Apex CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0517
_diffrn_reflns_av_sigmaI/netI    0.0964
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            12952
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.18
_exptl_absorpt_coefficient_mu    2.284
_exptl_absorpt_correction_T_max  0.58
_exptl_absorpt_correction_T_min  0.50
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.646
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Lamellar
_exptl_crystal_F_000             1208
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.495
_refine_diff_density_min         -0.541
_refine_diff_density_rms         0.093
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         4697
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0882
_refine_ls_R_factor_gt           0.0589
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.05P)^2^+0.66P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1088
_refine_ls_wR_factor_ref         0.1150
_reflns_number_gt                3483
_reflns_number_total             4697
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic800663t-file003_2.cif
_cod_data_source_block           61211cm
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21 21 21 '
_cod_database_code               4305676