Strength from weakness: opportunistic CH - O hydrogen bonds differentially dictate the conformational fate in solid and solution states
Amol M. Vibhute; Rajesh G. Gonnade; R. S. Swathi; Kana M. Sureshan; Chem.Commun. 48 (2012) 717–; doi:10.1039/c1cc15051k

data_7107170
_publ_section_title
;
 Strength from weakness: opportunistic CH - O hydrogen bonds
 differentially dictate the conformational fate in solid and solution
 states
;
_journal_name_full               Chem.Commun.
_journal_page_first              717
_journal_paper_doi               10.1039/c1cc15051k
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C23 H26 O7'
_chemical_formula_weight         414.44
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   12.8719(17)
_cell_length_b                   9.8278(13)
_cell_length_c                   32.197(4)
_cell_measurement_reflns_used    3243
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.26
_cell_measurement_theta_min      2.68
_cell_volume                     4073.0(9)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.880
_diffrn_measured_fraction_theta_max 0.880
_diffrn_measurement_device_type  'BRUKER SMART APEX CCD DIFFRACTOMETER'
_diffrn_measurement_method       'OMEGA-PHI 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  0.0920
_diffrn_reflns_av_sigmaI/netI    0.0663
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            17278
_diffrn_reflns_theta_full        24.00
_diffrn_reflns_theta_max         24.00
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.9950
_exptl_absorpt_correction_T_min  0.9764
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            colourless'
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATES
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.432
_refine_diff_density_min         -0.420
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.377
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         3191
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.377
_refine_ls_R_factor_all          0.1337
_refine_ls_R_factor_gt           0.1224
_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^)+(0.0331P)^2^+24.9319P] where ==(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2242
_refine_ls_wR_factor_ref         0.2291
_reflns_number_gt                2887
_reflns_number_total             3191
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1cc15051k.txt
_cod_data_source_block           kmsb89ff
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7107170