Supramolecular Synthons in Noncovalent Synthesis of a Class of Gelators Derived from Simple Organic Salts: Instant Gelation of Organic Fluids at Room Temperature via in Situ Synthesis of the Gelators
Uttam Kumar Das; Darshak R Trivedi; N. N. Adarsh; Parthasarathi Dastidar; Journal of Organic Chemistry 74 (2009) 7111–7121; doi:10.1021/jo901463k

data_4024861
_publ_section_title
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Supramolecular Synthons in Noncovalent Synthesis of a Class of Gelators
Derived from Simple Organic Salts: Instant Gelation of Organic Fluids at
Room Temperature via in Situ Synthesis of the Gelators
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_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              7111
_journal_page_last               7121
_journal_paper_doi               10.1021/jo901463k
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C14 H14 N2 O4'
_chemical_formula_weight         274.27
_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                90.000
_cell_angle_beta                 90.694(10)
_cell_angle_gamma                90.000
_cell_formula_units_Z            4
_cell_length_a                   8.567(5)
_cell_length_b                   22.285(12)
_cell_length_c                   6.976(4)
_cell_measurement_temperature    100(2)
_cell_volume                     1331.7(13)
_computing_cell_refinement       'BRUKER AXS SMART 3'
_computing_data_collection       'BRUKER AXS SMART 3'
_computing_data_reduction        'BRUKER AXS SAINT'
_computing_molecular_graphics    'MERCURY 2.2, PLATON 97'
_computing_publication_material  'MERCURY 2.2, PLATON 97'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 3
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0364
_diffrn_reflns_av_sigmaI/netI    0.0361
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5099
_diffrn_reflns_theta_full        22.50
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         1.83
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.9939
_exptl_absorpt_correction_T_min  0.9230
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            'LIGHT YELLOW'
_exptl_crystal_density_diffrn    1.368
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATE
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         1738
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0398
_refine_ls_R_factor_gt           0.0333
_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^)+(0.0503P)^2^+0.5661P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0876
_refine_ls_wR_factor_ref         0.0975
_reflns_number_gt                1624
_reflns_number_total             1738
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo901463k_si_005.cif
_cod_data_source_block           dt1045m
_cod_depositor_comments
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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.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN' changed
to 'multi-scan' 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_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4024861