Trans-4-(trifluoromethyl) cinnamic acid: Structural characterisation and crystallographic investigation into the temperature induced phase transition
Howard, Judith A. K.; Sparkes, Hazel A.; CrystEngComm 10 (2008) 502–; doi:10.1039/b715349j

data_7201775
_publ_section_title
;
 Trans-4-(trifluoromethyl) cinnamic acid: Structural characterisation
 and crystallographic investigation into the temperature induced phase
 transition
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              502
_journal_paper_doi               10.1039/b715349j
_journal_volume                  10
_journal_year                    2008
_chemical_formula_moiety         'C10 H7 F3 O2'
_chemical_formula_sum            'C10 H7 F3 O2'
_chemical_formula_weight         216.16
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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                95.689(14)
_cell_angle_beta                 94.632(19)
_cell_angle_gamma                94.56(2)
_cell_formula_units_Z            16
_cell_length_a                   27.558(11)
_cell_length_b                   7.783(4)
_cell_length_c                   16.868(6)
_cell_measurement_reflns_used    4975
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      30.491
_cell_measurement_theta_min      2.610
_cell_volume                     3574(3)
_computing_cell_refinement       'SAINT version 6.45A (Bruker, 2003)'
_computing_data_collection       'SMART version 5.054 (Bruker, 1999)'
_computing_data_reduction        'SAINT version 6.45A (Bruker, 2003)'
_computing_molecular_graphics    'ORTEP3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker SMART 6K CCD Detector'
_diffrn_measurement_method       \w
_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  0.0327
_diffrn_reflns_av_sigmaI/netI    0.0730
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            23244
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.02
_diffrn_reflns_theta_min         0.74
_exptl_absorpt_coefficient_mu    0.152
_exptl_absorpt_correction_T_max  0.972
_exptl_absorpt_correction_T_min  0.863
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, (G. Sheldrick, 1998)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.607
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.430
_refine_diff_density_min         -0.279
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1378
_refine_ls_number_reflns         13965
_refine_ls_number_restraints     378
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.1145
_refine_ls_R_factor_gt           0.0590
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0770P)^2^+0.7028P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1466
_refine_ls_wR_factor_ref         0.1749
_reflns_number_gt                7673
_reflns_number_total             13965
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b715349j.txt
_cod_data_source_block           07has005
_cod_database_code               7201775