Cyano-Bridged Homochiral Heterometallic Helical Complexes: Synthesis, Structures, Magnetic and Dielectric Properties
Zheng, Xiao-Dan; Hua, Yan-Long; Xiong, Ren-Gen; Ge, Jia-Zhen; Lu, Tong-Bu; Crystal Growth & Design 11 (2011) 302–; doi:10.1021/cg101314j

data_4500245
_publ_section_title
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 Cyano-Bridged Homochiral Heterometallic Helical Complexes: Synthesis,
 Structures, Magnetic and Dielectric Properties
;
_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              302
_journal_paper_doi               10.1021/cg101314j
_journal_volume                  11
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_sum            'C21 H38 Fe N10 Ni O2'
_chemical_formula_weight         577.13
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           152
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 31 2"'
_symmetry_space_group_name_H-M   'P 31 2 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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   10.2422(6)
_cell_length_b                   10.2422(6)
_cell_length_c                   23.3430(16)
_cell_measurement_reflns_used    2587
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      24.8
_cell_measurement_theta_min      3.4
_cell_volume                     2120.7(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID Imaging Plate'
_diffrn_measurement_method       \W
_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  0.0721
_diffrn_reflns_av_sigmaI/netI    0.0867
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            5480
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.48
_exptl_absorpt_coefficient_mu    1.215
_exptl_absorpt_correction_T_max  0.910
_exptl_absorpt_correction_T_min  0.7925
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   Higashi,T.(1995).
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.793
_refine_diff_density_min         -0.752
_refine_diff_density_rms         0.119
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.17(4)
_refine_ls_extinction_coef       0.0057(10)
_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   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2364
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.1114
_refine_ls_R_factor_gt           0.0469
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0341P)^2^+4.3855P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0905
_refine_ls_wR_factor_ref         0.1298
_reflns_number_gt                1520
_reflns_number_total             2364
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg101314j_si_002.cif
_cod_data_source_block           D-3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_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 2.4.1 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_sg_symbol_H-M      P3121
_cod_database_code               4500245