Supramolecular architectures of conformationally controlled 1,3-phenyl-dioxalamic molecular clefts through hydrogen bonding and steric restraints
González-González, Juan Saulo; Martínez-Martínez, Francisco Javier; Peraza Campos, Ana Lilia; de Jesus Rosales-Hoz, Maria; García-Báez, Efrén V.; Padilla-Martínez, Itzia I.; CrystEngComm 13 (2011) 4748–; doi:10.1039/c1ce05302g

data_7206305
_publ_section_title
;
 Supramolecular architectures of conformationally controlled
 1,3-phenyl-dioxalamic molecular clefts through hydrogen bonding and
 steric restraints
;
_journal_issue                   14
_journal_name_full               CrystEngComm
_journal_page_first              4748
_journal_paper_doi               10.1039/c1ce05302g
_journal_volume                  13
_journal_year                    2011
_chemical_formula_sum            'C17 H22 N2 O6'
_chemical_formula_weight         350.37
_chemical_name_systematic
;
Diethyl N,N'-[1,3-(2,4,6-trimethyl)phenylene]dioxamalate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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
_cell_angle_beta                 102.76(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.0020(3)
_cell_length_b                   15.7340(5)
_cell_length_c                   14.3370(6)
_cell_measurement_reflns_used    600
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     1760.5(3)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2001)'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin <i>et al.</i>, 1996)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge <i>et al.</i>, 2003)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  'Nonius KappaCCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0912
_diffrn_reflns_av_sigmaI/netI    0.0751
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10213
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.95
_diffrn_standards_decay_%        5
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.565
_refine_diff_density_min         -0.219
_refine_diff_density_rms         0.185
_refine_ls_extinction_coef       0.084(13)
_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   1.066
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         3043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.1077
_refine_ls_R_factor_gt           0.0743
_refine_ls_shift/su_max          0.056
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1803P)^2^+0.9092P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2083
_refine_ls_wR_factor_ref         0.2647
_reflns_number_gt                2197
_reflns_number_total             3043
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ce05302g.txt
_cod_data_source_block           497
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7206305