Concomitant polymorphism and a temperature-dependent phase change in (<i>E</i>)-[1-(4-methoxyphenyl)-3-phenyl-2-propenylideneamino]oxyacetic acid
Skakle, Janet M. S.; Low, John N.; Wardell, James L.; Glidewell, Christopher; Acta Crystallographica Section B 61 (2005) 321–328; doi:10.1107/S0108768105007421

data_2100263
_publ_section_title
;
 Concomitant polymorphism and a temperature-dependent phase change in
 (<i>E</i>)-[1-(4-methoxyphenyl)-3-phenyl-2-propenylideneamino]oxyacetic
 acid
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              321
_journal_page_last               328
_journal_paper_doi               10.1107/S0108768105007421
_journal_volume                  61
_journal_year                    2005
_chemical_formula_moiety         'C18 H17 N O4'
_chemical_formula_sum            'C18 H17 N O4'
_chemical_formula_weight         311.33
_chemical_name_systematic
;
(E)-[1-(4-methoxyphenyl)-3-phenyl-2-propenylideneamino)oxyacetic acid
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 93.167(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.4238(3)
_cell_length_b                   15.1513(9)
_cell_length_c                   17.0552(9)
_cell_measurement_reflns_used    3837
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      27.55
_cell_measurement_theta_min      1.80
_cell_volume                     1657.43(15)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    ' PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL-97 and PRPKAPPA (Ferguson, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD area detector'
_diffrn_measurement_method       \f-\w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0382
_diffrn_reflns_av_sigmaI/netI    0.0326
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            13953
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         1.80
_diffrn_standards_decay_%        negligible
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.996
_exptl_absorpt_correction_T_min  0.982
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.152
_refine_diff_density_min         -0.137
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.984
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         3837
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.984
_refine_ls_R_factor_all          0.0931
_refine_ls_R_factor_gt           0.0490
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0795P)^2^+0.0527P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1360
_refine_ls_wR_factor_ref         0.1513
_reflns_number_gt                2171
_reflns_number_total             3837
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ws5022.cif
_cod_data_source_block           IIb
_cod_depositor_comments
;
The following automatic conversions were performed:

'_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2100263