First one-dimensional homochiral stairway-like Cu(II) chains: crystal structures, circular dichroism (CD) spectra, ferroelectricity and antiferromagnetic properties.
Li, Xi-Li; Chen, Chun-Lai; Han, Li-Feng; Liu, Cai-Ming; Song, You; Yang, Xiao-Gang; Fang, Shao-Ming; Dalton transactions (Cambridge, England : 2003) 42 (2013) 5036–5041; doi:10.1039/c2dt32578k

data_7023826
_publ_section_title
;
 First one-dimensional homochiral stairway-like Cu(II) chains: crystal
 structures, circular dichroism (CD) spectra, ferroelectricity and
 antiferromagnetic properties.
;
_journal_issue                   14
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5036
_journal_page_last               5041
_journal_paper_doi               10.1039/c2dt32578k
_journal_volume                  42
_journal_year                    2013
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C16 H17 Cl2 Cu N3, 2(H2 O)'
_chemical_formula_sum            'C16 H21 Cl2 Cu N3 O2'
_chemical_formula_weight         421.80
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 96.190(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.3364(7)
_cell_length_b                   9.8456(9)
_cell_length_c                   16.314(2)
_cell_measurement_reflns_used    1968
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.32
_cell_measurement_theta_min      2.15
_cell_volume                     1011.83(19)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker Smart Aepex CCD'
_diffrn_measurement_method       'phi and 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  0.0220
_diffrn_reflns_av_sigmaI/netI    0.0607
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            3745
_diffrn_reflns_theta_full        25.09
_diffrn_reflns_theta_max         25.09
_diffrn_reflns_theta_min         3.84
_exptl_absorpt_coefficient_mu    1.355
_exptl_absorpt_correction_T_max  0.8543
_exptl_absorpt_correction_T_min  0.7457
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; bruker, 2000'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             434
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.103
_refine_diff_density_min         -0.509
_refine_diff_density_rms         0.104
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         2890
_refine_ls_number_restraints     19
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0715
_refine_ls_R_factor_gt           0.0610
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0971P)^2^+0.3153P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1513
_refine_ls_wR_factor_ref         0.1590
_reflns_number_gt                2517
_reflns_number_total             2890
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c2dt32578k.txt
_cod_data_source_block           Cu-S-1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        1011.8(2)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7023826