Relationships between the racemic structures of substituted mandelic acids containing 8- and 10-membered hydrogen bonded dimer rings
Coles, S. J.; Ellis, A. L.; Leung, K.; Sarson, J.; Threlfall, T. L.; Tizzard, G. J.; CrystEngComm 16 (2014) 10816–; doi:10.1039/C4CE01832J

data_7218468
_publ_section_title
;
 Relationships between the racemic structures of substituted mandelic
 acids containing 8- and 10-membered hydrogen bonded dimer rings
;
_journal_issue                   47
_journal_name_full               CrystEngComm
_journal_page_first              10816
_journal_paper_doi               10.1039/C4CE01832J
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C9 H10 O4'
_chemical_formula_sum            'C9 H10 O4'
_chemical_formula_weight         182.17
_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                   20.805(3)
_cell_length_b                   15.649(3)
_cell_length_c                   5.3033(7)
_cell_measurement_reflns_used    8617
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.6
_cell_measurement_theta_min      3.3
_cell_volume                     1726.6(5)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r13 (Rigaku, 2011)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r11 (Rigaku, 2011)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r13 (Rigaku, 2011)
;
_computing_molecular_graphics
;
MERCURY  (Bruno, Cole, Edgington, Kessler, Macrae, McCabe, Pearson and 
Taylor, 2002)
;
_computing_publication_material  'WINGX (Farrugia, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SUPERFLIP (Palatinus & Chapuis, 2007)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device
;
AFC12 (Right): Kappa 3 circle
;
_diffrn_measurement_device_type
;
Rigaku Saturn724+ (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support Mitegen
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1451
_diffrn_reflns_av_sigmaI/netI    0.1102
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            16890
_diffrn_reflns_theta_full        27.43
_diffrn_reflns_theta_max         27.43
_diffrn_reflns_theta_min         3.26
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.9989
_exptl_absorpt_correction_T_min  0.9857
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrystalClear-SM Expert 2.0 r13 (Rigaku, 2011)
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.142
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.992
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         1971
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.1957
_refine_ls_R_factor_gt           0.0767
_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^)+(0.0439P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1049
_refine_ls_wR_factor_ref         0.1320
_reflns_number_gt                832
_reflns_number_total             1971
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4ce01832j2.cif
_cod_data_source_block           2011jms0016ba-RS-4MeOMA-1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 2827 2014-09-09 07:05:25Z andrius 

 Adding full bibliography for 7218452--7218470.cif.
;
_cod_original_sg_symbol_H-M      'P bca'
_cod_database_code               7218468