Are gamma amino acids promising tools of crystal engineering? – Multicomponent crystals of baclofen
Báthori, Nikoletta B.; Kilinkissa, Ornella E. Y.; CrystEngComm 17 (2015) 8264–; doi:10.1039/C5CE01383F

data_7222246
_publ_section_title
;
 Are gamma amino acids promising tools of crystal engineering? --
 Multicomponent crystals of baclofen
;
_journal_issue                   43
_journal_name_full               CrystEngComm
_journal_page_first              8264
_journal_paper_doi               10.1039/C5CE01383F
_journal_volume                  17
_journal_year                    2015
_chemical_formula_sum            'C18 H20 Cl N O4'
_chemical_formula_weight         349.80
_chemical_melting_point          442(3)
_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
_audit_update_record
;
2015-07-08 deposited with the CCDC.
2015-09-20 downloaded from the CCDC.
;
_cell_angle_alpha                79.43(3)
_cell_angle_beta                 82.90(3)
_cell_angle_gamma                84.25(3)
_cell_formula_units_Z            2
_cell_length_a                   6.1768(12)
_cell_length_b                   7.5101(15)
_cell_length_c                   19.092(4)
_cell_measurement_reflns_used    3392
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.94
_cell_measurement_theta_min      2.18
_cell_volume                     861.2(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0351
_diffrn_reflns_av_sigmaI/netI    0.0304
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            14071
_diffrn_reflns_theta_full        27.94
_diffrn_reflns_theta_max         27.94
_diffrn_reflns_theta_min         2.18
_exptl_absorpt_coefficient_mu    0.243
_exptl_absorpt_correction_T_max  0.9952
_exptl_absorpt_correction_T_min  0.8292
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.349
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             368
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: ethanol: water=1:1'
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.285
_refine_diff_density_rms         0.040
_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   1.044
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         4103
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0484
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0453P)^2^+0.2624P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0985
_refine_ls_wR_factor_ref         0.1045
_reflns_number_gt                3392
_reflns_number_total             4103
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ce01383f2.cif
_cod_data_source_block           bacpta
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '439-444' was changed to '442(3)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 7222242--7222247.cif.
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7222246