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_7215474
_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 H23 O6, C6 H16 N'
_chemical_formula_sum            'C24 H39 N O6'
_chemical_formula_weight         437.56
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 105.730(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.0728(8)
_cell_length_b                   9.9777(3)
_cell_length_c                   16.8414(4)
_cell_measurement_temperature    296(2)
_cell_volume                     4864.1(2)
_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      296(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.1044
_diffrn_reflns_av_sigmaI/netI    0.0800
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            71057
_diffrn_reflns_theta_full        24.96
_diffrn_reflns_theta_max         24.96
_diffrn_reflns_theta_min         0.70
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9907
_exptl_absorpt_correction_T_min  0.9693
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1904
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.959
_refine_diff_density_min         -0.649
_refine_diff_density_rms         0.096
_refine_ls_extinction_coef       0.0047(6)
_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   1.085
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     574
_refine_ls_number_reflns         8471
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.1579
_refine_ls_R_factor_gt           0.1053
_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^)+(0.0853P)^2^+28.5407P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2468
_refine_ls_wR_factor_ref         0.2727
_reflns_number_gt                5544
_reflns_number_total             8471
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce42655f2.cif
_cod_data_source_block           ta1175_2
_cod_depositor_comments
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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.

'_refine_ls_hydrogen_treatment' value 'CONSTR' changed
to 'constr' 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_sg_symbol_H-M      'P 21/c'
_cod_database_code               7215474