1,3,4-Oxadiazoles for Crystal Engineering. Convenient Synthesis and Self-Assembly: Nonchiral Chains versus Chiral Helices
Gutov, Oleksii V.; Crystal Growth & Design 13 (2013) 3953–; doi:10.1021/cg400649h

data_4508154
_publ_section_title
;
 1,3,4-Oxadiazoles for Crystal Engineering. Convenient Synthesis and
 Self-Assembly: Nonchiral Chains versus Chiral Helices
;
_journal_issue                   9
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3953
_journal_paper_doi               10.1021/cg400649h
_journal_volume                  13
_journal_year                    2013
_chemical_absolute_configuration unk
_chemical_formula_sum            'C8 H10 N2 O3'
_chemical_formula_weight         182.18
_chemical_name_systematic
;
 3-(5-cyclopropyl-1,3,4-oxadiazol-2-yl)propanoic acid
;
_space_group_IT_number           4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2012-08-14T13:53:33-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 95.921(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.0880(2)
_cell_length_b                   11.8516(4)
_cell_length_c                   14.0429(5)
_cell_measurement_temperature    173(2)
_cell_volume                     842.28(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0243
_diffrn_reflns_av_unetI/netI     0.0427
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            6890
_diffrn_reflns_theta_full        28.85
_diffrn_reflns_theta_max         28.85
_diffrn_reflns_theta_min         1.46
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_T_max  0.9802
_exptl_absorpt_correction_T_min  0.9443
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.437
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.39
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.188
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.3(8)
_refine_ls_extinction_coef       0.0144(17)
_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   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         3799
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0414
_refine_ls_R_factor_gt           0.0346
_refine_ls_shift/su_max          0.022
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0276P)^2^+0.1243P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.068
_refine_ls_wR_factor_ref         0.0755
_reflns_number_gt                3396
_reflns_number_total             3799
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg400649h_si_003.cif
_cod_data_source_block           1906122
_cod_database_code               4508154