Crystalline Superlattices from Single-Sized Quantum Dots
Nanfeng Zheng; Xianhui Bu; Haiwei Lu; Qichun Zhang; Pingyun Feng; Journal of the American Chemical Society 127 (2005) 11963–11965; doi:10.1021/ja053588o

data_4111892
_publ_section_title
;
 Crystalline Superlattices from Single-Sized Quantum Dots
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11963
_journal_page_last               11965
_journal_paper_doi               10.1021/ja053588o
_journal_volume                  127
_journal_year                    2005
_chemical_formula_sum            'C158 H138 Cd17 N4 S32'
_chemical_formula_weight         5029.44
_chemical_name_common            MOL-3CdS
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           154
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 32 2"'
_symmetry_space_group_name_H-M   'P 32 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                   19.172(3)
_cell_length_b                   19.172(3)
_cell_length_c                   45.758(9)
_cell_measurement_temperature    293(2)
_cell_volume                     14566(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.1857
_diffrn_reflns_av_sigmaI/netI    0.2437
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            25679
_diffrn_reflns_theta_full        19.80
_diffrn_reflns_theta_max         19.80
_diffrn_reflns_theta_min         1.23
_exptl_absorpt_coefficient_mu    2.205
_exptl_crystal_density_diffrn    1.720
_exptl_crystal_F_000             7326
_refine_diff_density_max         1.431
_refine_diff_density_min         -1.789
_refine_diff_density_rms         0.347
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.62(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     318
_refine_ls_number_reflns         8648
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.1358
_refine_ls_R_factor_gt           0.0931
_refine_ls_shift/su_max          5.178
_refine_ls_shift/su_mean         0.156
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1675P)^2^+1.0235P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2766
_refine_ls_wR_factor_ref         0.2982
_reflns_number_gt                4901
_reflns_number_total             8648
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja053588osi20050701_084617_5.cif
_cod_data_source_block           MOL-3CdS
_cod_original_cell_volume        14565(4)
_cod_database_code               4111892