Supramolecular Architectures from Ammonium-Crown Ether Inclusion Complexes in Polyoxometalate Association: Synthesis, Structure, and Spectroscopy
Chatterjee, Tanmay; Sarma, Monima; Das, Samar K.; Crystal Growth & Design 10 (2010) 3149–; doi:10.1021/cg100292u

data_4501709
_publ_section_title
;
 Supramolecular Architectures from Ammonium-Crown Ether Inclusion
 Complexes in Polyoxometalate Association: Synthesis, Structure, and
 Spectroscopy
;
_journal_issue                   7
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3149
_journal_paper_doi               10.1021/cg100292u
_journal_volume                  10
_journal_year                    2010
_chemical_formula_moiety         'O40 Si W12,4(C16 H24 O6),2(C2 H3 N),4(NH4)'
_chemical_formula_sum            'C68 H118 N6 O66 Si W12'
_chemical_formula_weight         4309.80
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                66.302(2)
_cell_angle_beta                 70.832(2)
_cell_angle_gamma                74.559(2)
_cell_formula_units_Z            1
_cell_length_a                   13.4862(18)
_cell_length_b                   15.132(2)
_cell_length_c                   15.324(2)
_cell_measurement_reflns_used    5894
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.10
_cell_measurement_theta_min      2.36
_cell_volume                     2672.0(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD Area Detector'
_diffrn_measurement_method       'Phi and Omega Scan'
_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  0.0337
_diffrn_reflns_av_sigmaI/netI    0.0381
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            25845
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.49
_exptl_absorpt_coefficient_mu    12.975
_exptl_absorpt_correction_T_max  0.1625
_exptl_absorpt_correction_T_min  0.0658
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    2.688
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1998
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_exptl_crystal_size_min          0.22
_refine_diff_density_max         1.288
_refine_diff_density_min         -2.247
_refine_diff_density_rms         0.288
_refine_ls_extinction_method     none
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_refine_ls_number_reflns         9388
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_refine_ls_R_factor_all          0.0635
_refine_ls_R_factor_gt           0.0597
_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^)+(0.0105P)^2^+94.5129P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1374
_refine_ls_wR_factor_ref         0.1388
_reflns_number_gt                8764
_reflns_number_total             9388
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg100292u_si_002.cif
_cod_data_source_block           NH4-B18C6-SiW12
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Empirical'
changed to 'empirical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'None' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        2671.9(6)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4501709