2,5-Lutidine
Bond, Andrew D.; Davies, John E.; Acta Crystallographica Section E 58 (2002) o326–o327; doi:10.1107/S1600536802003380

data_2200863
_publ_section_title
;
 2,5-Lutidine
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o326
_journal_page_last               o327
_journal_paper_doi               10.1107/S1600536802003380
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C7 H9 N'
_chemical_formula_moiety         'C7 H9 N'
_chemical_formula_sum            'C7 H9 N'
_chemical_formula_weight         107.15
_chemical_melting_point          258
_chemical_name_common            2,5-lutidine
_chemical_name_systematic        2,5-dimethylpyridine
_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
_cell_angle_alpha                108.139(4)
_cell_angle_beta                 92.399(4)
_cell_angle_gamma                96.743(5)
_cell_formula_units_Z            4
_cell_length_a                   7.0991(4)
_cell_length_b                   7.7279(5)
_cell_length_c                   12.3900(9)
_cell_measurement_reflns_used    2259
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      22.46
_cell_measurement_theta_min      1.00
_cell_volume                     639.26(7)
_computing_cell_refinement       'HKL SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction
;
HKL DENZO and SCALEPACK (Otwinowski & Minor, 1997)
;
_computing_molecular_graphics
'XP (Sheldrick, 1993) and CAMERON (Watkin et al., 1996)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full .969
_diffrn_measured_fraction_theta_max .969
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'Thin-slice \w and \f scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .7107
_diffrn_reflns_av_R_equivalents  .0303
_diffrn_reflns_av_sigmaI/netI    .0596
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4192
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         3.74
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    .066
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.113
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cylinder
_exptl_crystal_F_000             232
_exptl_crystal_size_rad          .15
_refine_diff_density_max         .143
_refine_diff_density_min         -.132
_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     155
_refine_ls_number_reflns         2827
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          .1055
_refine_ls_R_factor_gt           .0543
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0487P)^2^+0.1043P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          .1240
_refine_ls_wR_factor_ref         .1448
_reflns_number_gt                1643
_reflns_number_total             2827
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cf6153.cif
_cod_data_source_block           I
_cod_database_code               2200863
_cod_database_fobs_code          2200863