Enantiomorphic Helical Coordination Polymers of {[M(pyrimidine)(OH2)4][SiF6]·H2O}∞(M = Co2+, Cu2+, Zn2+)
Cordes, David, B.; Rogers, Robin D.; Crystal Growth & Design 7 (2007) 1943–; doi:10.1021/cg070462p

data_4504394
_publ_section_title
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 Enantiomorphic Helical Coordination Polymers of
 {[M(pyrimidine)(OH2)4][SiF6]&#x00B7;H2O}\\infty (M = Co2+, Cu2+, Zn2+)
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_journal_issue                   10
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1943
_journal_paper_doi               10.1021/cg070462p
_journal_volume                  7
_journal_year                    2007
_chemical_formula_moiety         'C4 H12 N2 O4 Zn, F6 Si, H2 O'
_chemical_formula_sum            'C4 H14 F6 N2 O5 Si Zn'
_chemical_formula_weight         377.63
_chemical_name_common            'Zn-pyrimidine helix'
_chemical_name_systematic
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 ? 
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_space_group_IT_number           92
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4abw 2nw'
_symmetry_space_group_name_H-M   'P 41 21 2'
_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            8
_cell_length_a                   11.1860(2)
_cell_length_b                   11.1860(2)
_cell_length_c                   19.7088(4)
_cell_measurement_reflns_used    5523
_cell_measurement_temperature    173(2)
_cell_volume                     2466.10(8)
_computing_cell_refinement       'Siemens XSCANS'
_computing_data_collection       'Siemens XSCANS'
_computing_data_reduction        'Siemens SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       '\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  0.2363
_diffrn_reflns_av_sigmaI/netI    0.1783
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            15405
_diffrn_reflns_theta_full        25.30
_diffrn_reflns_theta_max         28.15
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    2.185
_exptl_absorpt_correction_T_max  0.76959857
_exptl_absorpt_correction_T_min  0.597129
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2002)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.034
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallepiped
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.512
_refine_diff_density_min         -1.606
_refine_diff_density_rms         0.187
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.008(19)
_refine_ls_extinction_coef       0.0039(3)
_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   0.650
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         2916
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.650
_refine_ls_R_factor_all          0.0900
_refine_ls_R_factor_gt           0.0482
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     '0.0000, 0.0000'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0755
_refine_ls_wR_factor_ref         0.0853
_reflns_number_gt                1652
_reflns_number_total             2916
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg070462p-file003.cif
_cod_data_source_block           kms48
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_cell_volume        2466.09(8)
_cod_database_code               4504394