Enantiopure and racemic alanine as bridging ligands in Ca and Mn chain polymers
Lamberts, Kevin; Möller, Andreas; Englert, Ulli; Acta Crystallographica Section B 70 (2014) 989–998; doi:10.1107/S2052520614021398

data_2105980
_publ_section_title
;
 Enantiopure and racemic alanine as bridging ligands in Ca and Mn chain
 polymers
;
_journal_coeditor_code           GP5078
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              989
_journal_page_last               998
_journal_paper_doi               10.1107/S2052520614021398
_journal_volume                  70
_journal_year                    2014
_chemical_formula_moiety         'C6 H18 Ca N2 O6, 2(Cl), H2 O'
_chemical_formula_sum            'C6 H20 Ca Cl2 N2 O7'
_chemical_formula_weight         343.22
_space_group_crystal_system      orthorhombic
_space_group_IT_number           60
_space_group_name_Hall           '-P 2n 2ab'
_space_group_name_H-M_alt        'P b c n'
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   23.347(7)
_cell_length_b                   8.702(3)
_cell_length_c                   7.391(2)
_cell_measurement_temperature    100(2)
_cell_volume                     1501.6(8)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  'multi-layer optics'
_diffrn_radiation_source         microsource
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1285
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            16504
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.414
_diffrn_reflns_theta_min         2.498
_exptl_absorpt_coefficient_mu    0.798
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.5707
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.518
_exptl_crystal_description       needle
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.339
_refine_diff_density_min         -0.313
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     102
_refine_ls_number_reflns         1545
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0602
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0250P)^2^+0.6000P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0734
_refine_ls_wR_factor_ref         0.0826
_reflns_number_gt                1164
_reflns_number_total             1545
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            gp5078sup1.cif
_cod_data_source_block           5
_cod_original_cell_volume        1501.5(8)
_cod_database_code               2105980
_cod_database_fobs_code          2105980
_shelx_estimated_absorpt_t_min   0.857
_shelx_estimated_absorpt_t_max   0.969
_shelx_hkl_checksum              59531
_shelx_res_checksum              89263
_shelxl_version_number           20.13