The role of secondary ammonium cations in controlling the conformation of C3-symmetric acid moieties and its implication for the design of supramolecular capsules
Adalder, Tapas Kumar; Dastidar, Parthasarathi; CrystEngComm 16 (2014) 4867–; doi:10.1039/c3ce42655f

data_7215473
_publ_section_title
;
 The role of secondary ammonium cations in controlling the conformation of
 C3-symmetric acid moieties and its implication for the design of
 supramolecular capsules
;
_journal_issue                   22
_journal_name_full               CrystEngComm
_journal_page_first              4867
_journal_paper_doi               10.1039/c3ce42655f
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C18 H24 O6'
_chemical_formula_sum            'C18 H24 O6'
_chemical_formula_weight         336.37
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 93.079(15)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.125(6)
_cell_length_b                   4.993(3)
_cell_length_c                   37.33(2)
_cell_measurement_temperature    293(2)
_cell_volume                     1884.5(19)
_computing_cell_refinement       'BRUKER APEX II'
_computing_data_collection       'BRUKER APEX II'
_computing_data_reduction        'BRUKER APEX II'
_computing_molecular_graphics    'MERCURY 2.3, PLATON'
_computing_publication_material  'MERCURY 2.3, PLATON'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'BRUKER CCD AREA DETECTOR'
_diffrn_measurement_method       'PHI-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  0.0640
_diffrn_reflns_av_sigmaI/netI    0.0373
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            7322
_diffrn_reflns_theta_full        17.50
_diffrn_reflns_theta_max         17.50
_diffrn_reflns_theta_min         1.09
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9825
_exptl_absorpt_correction_T_min  0.9756
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.186
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.821
_refine_diff_density_min         -0.244
_refine_diff_density_rms         0.120
_refine_ls_extinction_coef       0.049(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.161
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     224
_refine_ls_number_reflns         1192
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.161
_refine_ls_R_factor_all          0.0938
_refine_ls_R_factor_gt           0.0792
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2436
_refine_ls_wR_factor_ref         0.2647
_reflns_number_gt                917
_reflns_number_total             1192
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce42655f2.cif
_cod_data_source_block           ta0668a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

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

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 7215472--7215483.cif.
;
_cod_original_cell_volume        1884(2)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7215473