Zinc Chalcogenolate Complexes as Capping Agents in the Synthesis of Ternary II-II'-VI Nanoclusters: Structure and Photophysical Properties of [(N,N'-tmeda)5Zn5Cd11Se13(SePh)6(thf)2]
Marty W. DeGroot; Nicholas J. Taylor; John F. Corrigan; Journal of the American Chemical Society 125 (2003) 864–865; doi:10.1021/ja028800s

data_4113402
_publ_contact_author             'Dr John F. Corrigan'
_publ_contact_author_email       jfcorrig@uwo.ca
_publ_section_title
;
 Zinc Chalcogenolate Complexes as Capping Agents in the Synthesis of
 Ternary II-II'-VI Nanoclusters: Structure and Photophysical Properties of
 [(N,N'-tmeda)5Zn5Cd11Se13(SePh)6(thf)2]
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              864
_journal_page_last               865
_journal_paper_doi               10.1021/ja028800s
_journal_volume                  125
_journal_year                    2003
_chemical_formula_sum            'C12 H34 N2 Se2 Si2 Zn'
_chemical_formula_weight         485.88
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.1120(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.4454(2)
_cell_length_b                   14.3403(4)
_cell_length_c                   18.7691(5)
_cell_measurement_temperature    200(2)
_cell_volume                     2273.11(10)
_computing_cell_refinement       'Nonius Denzo '
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        'Nonius Denzo'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD '
_diffrn_measurement_method       'phi scans plus omega to complete'
_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  0.0900
_diffrn_reflns_av_sigmaI/netI    0.1091
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            14907
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    4.381
_exptl_absorpt_correction_type   Scalepack
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_description       needle
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.501
_refine_diff_density_min         -0.548
_refine_diff_density_rms         0.132
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     169
_refine_ls_number_reflns         5229
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.1002
_refine_ls_R_factor_gt           0.0447
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0361P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0808
_refine_ls_wR_factor_ref         0.0953
_reflns_number_gt                3156
_reflns_number_total             5229
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja028800s-3_s2_1.cif
_cod_data_source_block           COMPLEX1
_cod_database_code               4113402