Metal-complex-decorated homochiral heterobimetallic telluride single-stranded helix.
Zhang, Qichun; Bu, Xianhui; Lin, Zhien; Biasini, Maurizio; Beyermann, W. P.; Feng, Pingyun; Inorganic chemistry 46 (2007) 7262–7264; doi:10.1021/ic701135h

data_4338926
_publ_section_title
;
 Metal-complex-decorated homochiral heterobimetallic telluride
 single-stranded helix.
;
_journal_issue                   18
_journal_name_full               'Inorganic chemistry'
_journal_page_first              7262
_journal_page_last               7264
_journal_paper_doi               10.1021/ic701135h
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'C20 H58 Mn4 N14 Sn2 Te8'
_chemical_formula_weight         1972.74
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   14.4563(2)
_cell_length_b                   14.4726(2)
_cell_length_c                   24.0551(4)
_cell_measurement_temperature    273(2)
_cell_volume                     5032.81(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      300(2)
_diffrn_measured_fraction_theta_full 0.776
_diffrn_measured_fraction_theta_max 0.776
_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  0.0275
_diffrn_reflns_av_sigmaI/netI    0.0452
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            45866
_diffrn_reflns_theta_full        27.81
_diffrn_reflns_theta_max         27.81
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    6.527
_exptl_crystal_density_diffrn    2.604
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3568
_refine_diff_density_max         1.300
_refine_diff_density_min         -0.829
_refine_diff_density_rms         0.144
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.04(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.950
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         9214
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.950
_refine_ls_R_factor_all          0.0390
_refine_ls_R_factor_gt           0.0305
_refine_ls_shift/su_max          2.525
_refine_ls_shift/su_mean         0.284
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0396P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0680
_refine_ls_wR_factor_ref         0.0712
_reflns_number_gt                7952
_reflns_number_total             9214
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic701135h-file001.cif
_cod_data_source_block           a_(qc_3_12e)
_cod_database_code               4338926