Nature Chooses Rings: Synthesis of Silicon-Containing Macrocyclic Peroxides
Arzumanyan, Ashot V.; Novikov, Roman A.; Terent’ev, Alexander O.; Platonov, Maxim M.; Lakhtin, Valentin G.; Arkhipov, Dmitry E.; Korlyukov, Alexander A.; Chernyshev, Vladimir V.; Fitch, Andrew N.; Zdvizhkov, Alexander T.; Krylov, Igor B.; Tomilov, Yury V.; Nikishin, Gennady I.; Organometallics 33 (2014) 2230–; doi:10.1021/om500095x

data_4083068
_publ_section_title
;
 Nature Chooses Rings: Synthesis of Silicon-Containing Macrocyclic
 Peroxides
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2230
_journal_paper_doi               10.1021/om500095x
_journal_volume                  33
_journal_year                    2014
_chemical_formula_moiety         'C20 H40 O6 Si2'
_chemical_formula_sum            'C20 H40 O6 Si2'
_chemical_formula_weight         432.70
_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                106.4820(10)
_cell_angle_beta                 91.5770(10)
_cell_angle_gamma                90.6480(10)
_cell_formula_units_Z            2
_cell_length_a                   9.6887(4)
_cell_length_b                   10.2615(4)
_cell_length_c                   12.4452(5)
_cell_measurement_reflns_used    6129
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.14
_cell_measurement_theta_min      2.67
_cell_volume                     1185.78(8)
_computing_cell_refinement       'APEX2 (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'APEX2 (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_computing_publication_material  'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_computing_structure_refinement  'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_computing_structure_solution    'SHELXTL ver. 5.1 (Sheldrick, 1998)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker APEX II CCD area detector'
_diffrn_measurement_method       '\f and \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  0.0219
_diffrn_reflns_av_sigmaI/netI    0.0332
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            16462
_diffrn_reflns_theta_full        31.22
_diffrn_reflns_theta_max         31.22
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.180
_exptl_absorpt_correction_T_max  0.9822
_exptl_absorpt_correction_T_min  0.9631
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'APEX2 (Bruker, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.454
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         7609
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0491
_refine_ls_R_factor_gt           0.0365
_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^)+(0.0432P)^2^+0.3358P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0869
_refine_ls_wR_factor_ref         0.0942
_reflns_number_gt                6177
_reflns_number_total             7609
_reflns_threshold_expression     I>2u(I)
_cod_data_source_file            om500095x_si_002.cif
_cod_data_source_block           5c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 4083066--4083069.cif.
;
_cod_database_code               4083068