<i>tert</i>-Butoxycarbonyl-<small>L</small>-leucyl-<small>L</small>-threoninamide
S. Banumathi; D. Velmurugan; E. Subramanian; N. Ashish; R. Kishore; Acta Crystallographica Section C 55 (1999) 78–79; doi:10.1107/S0108270198010385

data_2008120
_publ_section_title
<i>tert</i>-Butoxycarbonyl-<small>L</small>-leucyl-<small>L</small>-threoninamide
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              78
_journal_page_last               79
_journal_paper_doi               10.1107/S0108270198010385
_journal_volume                  55
_journal_year                    1999
_chemical_formula_sum            'C15 H29 N3 O5'
_chemical_formula_weight         331.41
_chemical_name_systematic
;
Ter-butoxy carbonyl L-Leucyl-L-Threonyl amide
;
_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'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.713(2)
_cell_length_b                   8.6740(10)
_cell_length_c                   28.325(6)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      22
_cell_measurement_theta_min      15
_cell_volume                     1895.0(7)
_computing_cell_refinement       'SDP (Frenz, 1978)'
_computing_data_collection       'CAD-4 Software (Enraf-Nonius, 1989)'
_computing_data_reduction        'CAD-4 Software'
_computing_molecular_graphics    'ZORTEP (Zsolnai, 1997)'
_computing_publication_material  'SHELXL and PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device_type  'Enraf-Nonius CAD4 diffractometer'
_diffrn_measurement_method       '\w/2\q scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0152
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2140
_diffrn_reflns_theta_max         73
_diffrn_reflns_theta_min         3.12
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.719
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.162
_exptl_crystal_density_meas      ?
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.357
_refine_diff_density_min         -0.249
_refine_ls_abs_structure_Flack   0.1(4)
_refine_ls_extinction_coef       0.0040(12)
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     215
_refine_ls_number_reflns         2137
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_restrained_S_obs      1.009
_refine_ls_R_factor_all          0.0619
_refine_ls_R_factor_gt           0.0590
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0708P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1759
_reflns_number_observed          2030
_reflns_number_total             2140
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            vj1089.cif
_cod_data_source_block           thrn
_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 

The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'None' changed to 'none'
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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0708P)^2^] where P=(Fo^2^+2Fc^2^)/3' was changed
to 'calc'. New tag '_refine_ls_weighting_details' was created. The
value of the new tag was set to 'w = 1/[\s^2^(Fo^2^)+(0.0708P)^2^]
where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2008120
_cod_database_fobs_code          2008120