Two novel anion cluster compounds with a planar 'open' structure [Et4N]2[MS4Cu4(SCN)4(2-pic)4] (M = W, Mo; 2-pic = 2-methylpyridine): synthesis, structural characterization, nonlinear response and large optical limiting properties
Zhang, Chi; Song, Yinglin; Jin, Guocheng; Fang, Guangyu; Wang, Yuxiao; Raj, S. Shanmuga Sundara; Fun, Hoong-Kun; Xin, Xinquan; Journal of the Chemical Society, Dalton Transactions  (2000) 1317–; doi:10.1039/a909656f

data_7009269
_publ_section_title
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 Two novel anion cluster compounds with a planar 'open' structure
 [Et4N]2[MS4Cu4(SCN)4(2-pic)4] (M&#x2005;=&#x2005;W, Mo;
 2-pic&#x2005;=&#x2005;2-methylpyridine): synthesis, structural
 characterization, nonlinear response and large optical limiting
 properties
;
_journal_issue                   8
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              1317
_journal_paper_doi               10.1039/a909656f
_journal_year                    2000
_chemical_formula_sum            'C44 H68 Cu4 Mo N10 S8'
_chemical_formula_weight         1343.66
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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                   14.6884(3)
_cell_length_b                   14.6881(2)
_cell_length_c                   28.3778(6)
_cell_measurement_reflns_used    8824
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.38
_cell_measurement_theta_min      1.56
_cell_volume                     6122.4(2)
_computing_cell_refinement       'SAINT (Siemens, 1996b)'
_computing_data_collection       'SMART (Siemens, 1996a)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material
;
SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 1990)
;
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type
;
Siemens SMART CCD area detector diffractometer
;
_diffrn_measurement_method       '\w 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  0.0989
_diffrn_reflns_av_sigmaI/netI    0.0583
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            26338
_diffrn_reflns_theta_full        22.50
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         1.56
_exptl_absorpt_coefficient_mu    1.876
_exptl_absorpt_correction_T_max  0.6830
_exptl_absorpt_correction_T_min  0.5679
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.458
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2752
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.348
_refine_diff_density_min         -0.323
_refine_diff_density_rms         0.075
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     314
_refine_ls_number_reflns         4000
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0702
_refine_ls_R_factor_gt           0.0452
_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^)+(0.0380P)^2^+3.5379P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0848
_refine_ls_wR_factor_ref         0.0958
_reflns_number_gt                3122
_reflns_number_total             4000
_reflns_threshold_expression     '> 2\s(I)'
_cod_data_source_file            a909656f.txt
_cod_data_source_block           cluster2
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_database_code               7009269