(<i>S</i>)-(+)-2-Formamido-4-methylpentanoic acid
Boyle, Grant A.; Govender, Thavendran; Kruger, Hendrik G.; Maguire, Glenn E. M.; Naicker, Tricia; Acta Crystallographica Section E 63 (2007) o3445–o3445; doi:10.1107/S1600536807032503

data_2214633
_publ_section_title
;
 (<i>S</i>)-(+)-2-Formamido-4-methylpentanoic acid
;
_journal_coeditor_code           EZ2086
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3445
_journal_page_last               o3445
_journal_paper_doi               10.1107/S1600536807032503
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C7 H13 N O3'
_chemical_formula_moiety         'C7 H13 N O3'
_chemical_formula_sum            'C7 H13 N O3'
_chemical_formula_weight         159.18
_chemical_name_systematic
;
(<i>S</i>)-(+)-2-Formamido-4-methylpentanoic acid
;
_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           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.6041(7)
_cell_length_b                   10.0758(7)
_cell_length_c                   9.2936(6)
_cell_measurement_reflns_used    5368
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.92
_cell_measurement_theta_min      2.93
_cell_volume                     899.33(11)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics    'Mercury (Bruno <i>et al.</i>,  2002)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0519
_diffrn_reflns_av_sigmaI/netI    0.0190
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            10153
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.176
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.115
_refine_diff_density_min         -0.138
_refine_ls_extinction_coef       0.029(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     104
_refine_ls_number_reflns         1044
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0331
_refine_ls_R_factor_gt           0.0309
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0552P)^2^+0.0822P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0846
_refine_ls_wR_factor_ref         0.0863
_reflns_number_gt                970
_reflns_number_total             1044
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ez2086.cif
_cod_data_source_block           I
_cod_database_code               2214633
_cod_database_fobs_code          2214633