Strong overcrowding in dimethyl 2-(dimethylamino)terephthalate
Centore, Roberto; Fusco, Sandra; Peluso, Andrea; Carotenuto, Maurizio; Tuzi, Angela; Acta Crystallographica Section C 64 (2008) o420–o422; doi:10.1107/S0108270108020003

data_2016721
_publ_section_title
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 Strong overcrowding in dimethyl 2-(dimethylamino)terephthalate
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_journal_coeditor_code           GZ3150
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o420
_journal_page_last               o422
_journal_paper_doi               10.1107/S0108270108020003
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C12 H15 N O4'
_chemical_formula_moiety         'C12 H15 N O4'
_chemical_formula_sum            'C12 H15 N O4'
_chemical_formula_weight         237.25
_chemical_melting_point          322
_chemical_name_systematic
;
dimethyl 2-(dimethylamino)terephthalate
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                74.624(14)
_cell_angle_beta                 82.576(16)
_cell_angle_gamma                85.663(9)
_cell_formula_units_Z            2
_cell_length_a                   7.7120(7)
_cell_length_b                   7.9190(8)
_cell_length_c                   9.989(3)
_cell_measurement_reflns_used    180
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.256
_cell_measurement_theta_min      4.663
_cell_volume                     582.7(2)
_computing_cell_refinement
;
DIRAX/LSQ (Duisenberg <i>et al.</i>,  2000)
;
_computing_data_collection       'COLLECT (Nonius, 1999)'
_computing_data_reduction
;
EvalCCD (Duisenberg <i>et al.</i>,  2003)
;
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR97 (Altomare <i>et al.</i>,  1999)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker--Nonius KappaCCD'
_diffrn_measurement_method
;
CCD rotation images, thick slices
;
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0402
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            8647
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.22
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.9720
_exptl_absorpt_correction_T_min  0.9523
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS (Bruker--Nonius, 2002)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             252
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.250
_refine_diff_density_min         -0.225
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         2622
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0626
_refine_ls_R_factor_gt           0.0403
_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^)+(0.0514P)^2^+0.1249P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1002
_refine_ls_wR_factor_ref         0.1094
_reflns_number_gt                1977
_reflns_number_total             2622
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gz3150.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_space_group_crystal_system' value 'Triclinic' changed to 'triclinic'
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 

The following automatic conversions were performed:

'_space_group_crystal_system' value 'Triclinic' changed to
'triclinic' 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_database_code               2016721
_cod_database_fobs_code          2016721