From Pincers to Steps: Synthesis, Structure, Characterization, and Transformation of a New Helical Calcium−Organic Framework, Ca[NC5H3(CO2)2](H2O)1.5
Kim, Min Kyung; Bae, Kyung-Lyul; Ok, Kang Min; Crystal Growth & Design 11 (2011) 930–; doi:10.1021/cg101558e

data_4500464
_publ_section_title
;
 From Pincers to Steps: Synthesis, Structure, Characterization, and
 Transformation of a New Helical Calcium&#x2212;Organic Framework,
 Ca[NC5H3(CO2)2](H2O)1.5
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              930
_journal_paper_doi               10.1021/cg101558e
_journal_volume                  11
_journal_year                    2011
_chemical_formula_sum            'C7 H9 Ca N O7'
_chemical_formula_weight         259.23
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 98.62(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.8693(12)
_cell_length_b                   17.848(4)
_cell_length_c                   9.897(2)
_cell_measurement_temperature    200.0(2)
_cell_volume                     1025.1(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      200.0(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX'
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0582
_diffrn_reflns_av_unetI/netI     0.0776
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            6114
_diffrn_reflns_theta_full        25.5
_diffrn_reflns_theta_max         25.5
_diffrn_reflns_theta_min         2.28
_exptl_absorpt_coefficient_mu    0.633
_exptl_absorpt_correction_T_max  0.93
_exptl_absorpt_correction_T_min  0.90
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 SADABS(Blessing, 1995) 
;
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.680
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.443
_refine_diff_density_min         -0.611
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         1905
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0769
_refine_ls_R_factor_gt           0.0442
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0524P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0927
_refine_ls_wR_factor_ref         0.1163
_reflns_number_gt                1335
_reflns_number_total             1905
_reflns_threshold_expression     >2\(I)
_cod_data_source_file            cg101558e_si_002.cif
_cod_data_source_block           Ca-org2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'EMPIRICAL' changed to
'empirical' 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 
;
_cod_original_formula_sum        'C7 H9 Ca1 N1 O7'
_cod_database_code               4500464