Single-Crystal to Single-Crystal Mechanical Contraction of Metal-Organic Frameworks through Stereoselective Postsynthetic Bromination.
Marshall, Ross J.; Griffin, Sarah L.; Wilson, Claire; Forgan, Ross S.; Journal of the American Chemical Society 137 (2015) 9527–9530; doi:10.1021/jacs.5b05434

data_4124172
_publ_section_title
;
 Single-Crystal to Single-Crystal Mechanical Contraction of Metal-Organic
 Frameworks through Stereoselective Postsynthetic Bromination.
;
_journal_issue                   30
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9527
_journal_page_last               9530
_journal_paper_doi               10.1021/jacs.5b05434
_journal_volume                  137
_journal_year                    2015
_chemical_formula_moiety         'C18 H14 Br2 O4'
_chemical_formula_sum            'C18 H14 Br2 O4'
_chemical_formula_weight         454.11
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2015-05-12
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 109.192(6)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   12.035(3)
_cell_length_b                   3.9873(10)
_cell_length_c                   18.148(5)
_cell_measurement_reflns_used    4544
_cell_measurement_temperature    100
_cell_measurement_theta_max      25.06
_cell_measurement_theta_min      2.38
_cell_volume                     822.5(4)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_computing_structure_solution
;
Superflip (Palatinus & Chapuis, 2007;Palatinus & van der Lee, 2008;
Palatinus et al., 2012)
;
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1004
_diffrn_reflns_av_unetI/netI     0.0688
_diffrn_reflns_Laue_measured_fraction_full 0.985
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8478
_diffrn_reflns_point_group_measured_fraction_full 0.985
_diffrn_reflns_point_group_measured_fraction_max 0.985
_diffrn_reflns_theta_full        25.064
_diffrn_reflns_theta_max         25.064
_diffrn_reflns_theta_min         1.792
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.948
_exptl_absorpt_correction_T_max  0.7058
_exptl_absorpt_correction_T_min  0.4960
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2012/1 (Bruker,2012) was used for absorption correction.
wR2(int) was 0.1477 before and 0.1174 after correction.
The Ratio of minimum to maximum transmission is 0.7027.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.834
_exptl_crystal_description       rod
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.849
_refine_diff_density_min         -0.953
_refine_diff_density_rms         0.197
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.140
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     110
_refine_ls_number_reflns         1430
_refine_ls_number_restraints     54
_refine_ls_restrained_S_all      1.120
_refine_ls_R_factor_all          0.0873
_refine_ls_R_factor_gt           0.0661
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0300P)^2^+13.4090P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1381
_refine_ls_wR_factor_ref         0.1498
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1170
_reflns_number_total             1430
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja5b05434_si_003.cif
_cod_data_source_block           trans1
_cod_depositor_comments
'Adding full bibliography for 4124172--4124178.cif.'
_cod_database_code               4124172
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Rigid body (RIGU) restrains
 C1, C2, C3, C4, C5, C6, C7, C8, C9
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
3.a Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C7(H7), C8(H8)
3.b Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C)
;
_shelx_res_checksum              77613
_shelx_hkl_checksum              64843
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'