“Cyclic Tetramer” vs “Dimer of Cyclic Dimer”: Subtle Anion Effects on the Cyclization of AgBF4vs AgClO4with Bis(3-pyridyl)dimethylsilane
Jung, Ok-Sang; Lee, Young-A; Kim, Yun Ju; Hong, Jongki; Crystal Growth & Design 2 (2002) 497–; doi:10.1021/cg025555f

data_4505827
_publ_section_title
;
 &#x201C;Cyclic Tetramer&#x201D; vs &#x201C;Dimer of Cyclic
 Dimer&#x201D;:&#x2009; Subtle Anion Effects on the Cyclization of AgBF4vs
 AgClO4with Bis(3-pyridyl)dimethylsilane
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              497
_journal_paper_doi               10.1021/cg025555f
_journal_volume                  2
_journal_year                    2002
_chemical_formula_sum            'C24 H32 Ag2 B2 F8 N4 O2 Si2'
_chemical_formula_weight         854.08
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_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                80.821(2)
_cell_angle_beta                 83.5804(19)
_cell_angle_gamma                76.8349(16)
_cell_formula_units_Z            2
_cell_length_a                   8.5296(3)
_cell_length_b                   13.4064(4)
_cell_length_c                   14.8556(4)
_cell_measurement_temperature    293(2)
_cell_volume                     1627.89(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_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  0.0240
_diffrn_reflns_av_sigmaI/netI    0.0390
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            11545
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    1.352
_exptl_crystal_density_diffrn    1.742
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             848
_refine_diff_density_max         1.460
_refine_diff_density_min         -1.020
_refine_diff_density_rms         0.232
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         7370
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0837
_refine_ls_R_factor_gt           0.0588
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0970P)^2^+2.4949P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1575
_refine_ls_wR_factor_ref         0.1872
_reflns_number_gt                5432
_reflns_number_total             7370
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg025555f_s1.cif
_cod_data_source_block           si
_cod_database_code               4505827