2-Hexylidene-3-methylsuccinic acid
Xiao-Hong Liu; Fang Xu; Yong-Cheng Lin; Wing-Lai Chan; Zhong-Yuan Zhou; Acta Crystallographica Section E 62 (2006) o2419–o2420; doi:10.1107/S1600536806018253

data_2209146
_publ_section_title
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 2-Hexylidene-3-methylsuccinic acid
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_journal_coeditor_code           CV2055
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2419
_journal_page_last               o2420
_journal_paper_doi               10.1107/S1600536806018253
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C11 H18 O4'
_chemical_formula_moiety         'C11 H18 O4'
_chemical_formula_sum            'C11 H18 O4'
_chemical_formula_weight         214.25
_chemical_name_systematic
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2-Hexylidene-3-methylsuccinic acid
;
_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                85.994(4)
_cell_angle_beta                 89.221(4)
_cell_angle_gamma                84.457(4)
_cell_formula_units_Z            2
_cell_length_a                   6.7208(14)
_cell_length_b                   9.488(2)
_cell_length_c                   10.139(2)
_cell_measurement_reflns_used    1921
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      2.01
_cell_volume                     641.9(2)
_computing_cell_refinement       'SAINT-Plus (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1999)'
_computing_data_reduction        SAINT-Plus
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker 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  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0374
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            5098
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.01
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.793
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.109
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             232
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.215
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         2497
_refine_ls_number_restraints     178
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.1102
_refine_ls_R_factor_gt           0.0656
_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^)+(0.114P)^2^+0.1365P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1850
_refine_ls_wR_factor_ref         0.2243
_reflns_number_gt                1402
_reflns_number_total             2497
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv2055.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2209146
_cod_database_fobs_code          2209146