Confinement of amino acids: Selective single crystal p-sulfonatocalix[6]arene complexation of L or D-leucine
Jerry L. Atwood; Scott J. Dalgarno; Michaele J. Hardie; Colin L. Raston; Chemical Communications  (2005) –; doi:10.1039/b413821j

data_7101140
_publ_section_title
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Confinement of amino acids: Selective single crystal
p-sulfonatocalix[6]arene complexation of L or D-leucine
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_journal_issue                   3
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/b413821j
_journal_year                    2005
_chemical_formula_moiety         'C6 H16 Cl N O3'
_chemical_formula_sum            'C6 H16 Cl N O3'
_chemical_formula_weight         185.65
_chemical_name_common            L-leucine.hydrochloride.hydrate
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.2563(13)
_cell_length_b                   6.3951(13)
_cell_length_c                   26.865(5)
_cell_measurement_temperature    150(2)
_cell_volume                     1074.9(4)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1996)'
_computing_data_collection       'COLLECT (Nonius, 1999)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1996)'
_computing_molecular_graphics
;
XSeed (Barbour, 2001)
;
_computing_publication_material  'local program'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.781
_diffrn_measured_fraction_theta_max 0.781
_diffrn_measurement_device_type  'Nonius KappaCCD area detector diffractometer'
_diffrn_measurement_method
;
Detector set at 30mm from sample with different 2theta offsets
1 degree phi exposures for chi=0 degree settings
1 degree omega exposures for chi=90 degree settings
;
_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  0.0678
_diffrn_reflns_av_sigmaI/netI    0.0624
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            1746
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.34
_exptl_absorpt_coefficient_mu    0.325
_exptl_absorpt_correction_T_max  0.949
_exptl_absorpt_correction_T_min  0.104
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Using multiple and symmetry-related data measurements via the program SORTAV
See R.H. Blessing, Acta Cryst (1995), A51, 33-38
;
_exptl_crystal_density_diffrn    1.147
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.159
_refine_diff_density_min         -0.167
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         1473
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0418
_refine_ls_R_factor_gt           0.0343
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0274P)^2^+0.2440P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0777
_refine_ls_wR_factor_ref         0.0818
_reflns_number_gt                1299
_reflns_number_total             1473
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b413821j.txt
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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      P212121
_cod_database_code               7101140