Novel predicted patterns of supramolecular self-assembly afforded by tetrameric R~4~^4^(12) rings of C~2~ symmetry in the crystal structures of 2-hydroxy-1-cyclopentanecarboxylic acid, 2-hydroxy-1- cyclohexanecarboxylic acid and 2-hydroxy-1-cycloheptanecarboxylic acid.
Kálmán, Alajos; Fábián, László; Argay, Gyula; Bernáth, Gábor; Gyarmati, Zsuzsanna; Acta Crystallographica, Section B 58 (2002) 494–501; doi:10.1107/S0108768102001854

data_2103121
_publ_section_title
;
 Novel predicted patterns of supramolecular self-assembly afforded by
 tetrameric R~4~^4^(12) rings of C~2~ symmetry in the crystal
 structures of 2-hydroxy-1-cyclopentanecarboxylic acid, 2-hydroxy-1-
 cyclohexanecarboxylic acid and 2-hydroxy-1-cycloheptanecarboxylic acid.
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              494
_journal_page_last               501
_journal_paper_doi               10.1107/S0108768102001854
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C7 H12 O3'
_chemical_formula_sum            'C7 H12 O3'
_chemical_formula_weight         144.17
_chemical_name_systematic
;
 (1R*,2S*)-2-hydroxy-1-cyclohexanecarboxylic acid
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 97.70(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.436(8)
_cell_length_b                   5.9740(10)
_cell_length_c                   12.095(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      34.52
_cell_measurement_theta_min      30.08
_cell_volume                     1534.9(7)
_computing_cell_refinement       'CAD4 Express'
_computing_data_collection       'CAD4 Express'
_computing_data_reduction        'XCAD4 (Harms  1996)'
_computing_molecular_graphics    'PLATON (Spek  1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick  1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick  1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Enraf-Nonius CAD4'
_diffrn_measurement_method       \w--2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54180
_diffrn_reflns_av_R_equivalents  0.0104
_diffrn_reflns_av_sigmaI/netI    0.0123
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1794
_diffrn_reflns_theta_full        75.63
_diffrn_reflns_theta_max         75.63
_diffrn_reflns_theta_min         4.16
_diffrn_standards_decay_%        16
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.807
_exptl_absorpt_correction_T_max  0.9762
_exptl_absorpt_correction_T_min  0.7383
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
'North A.C., Philips, D.C. & Mathews, F. (1968) Acta Cryst. A24, 350-359'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             624
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.189
_refine_diff_density_min         -0.157
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.128
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     122
_refine_ls_number_reflns         1597
_refine_ls_number_restraints     40
_refine_ls_restrained_S_all      1.122
_refine_ls_R_factor_all          0.0455
_refine_ls_R_factor_gt           0.0356
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1294
_refine_ls_wR_factor_ref         0.1355
_reflns_number_gt                1287
_reflns_number_total             1597
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            de0014.cif
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               2103121