A concise approach to the core structures of pinnaic acid and halichlorine
Yang, Sung-Hyun; Clark, G. R.; Caprio, Vittorio; Organic & Biomolecular Chemistry 7 (2009) 2981–2990; doi:10.1039/b903904j

data_7150673
_publ_section_title
;
 A concise approach to the core structures of pinnaic acid and
 halichlorine
;
_journal_issue                   14
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              2981
_journal_page_last               2990
_journal_paper_doi               10.1039/b903904j
_journal_volume                  7
_journal_year                    2009
_chemical_formula_moiety         'C18 H27 N O3'
_chemical_formula_sum            'C18 H27 N O3'
_chemical_formula_weight         305.41
_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                104.454(1)
_cell_angle_beta                 101.796(1)
_cell_angle_gamma                97.250(1)
_cell_formula_units_Z            2
_cell_length_a                   6.2552(1)
_cell_length_b                   10.5282(2)
_cell_length_c                   13.4329(2)
_cell_measurement_reflns_used    4948
_cell_measurement_temperature    84(2)
_cell_measurement_theta_max      26.30
_cell_measurement_theta_min      2.03
_cell_volume                     823.76(2)
_computing_cell_refinement       'SAINT (Bruker, 1995)'
_computing_data_collection       'SMART (Bruker, 1995)'
_computing_data_reduction        'SAINT (Bruker, 1995)'
_computing_molecular_graphics    'Ortep-III (Burnett & Johnson, 1996)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      84(1)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       'Area detector \w scans'
_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  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0491
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            7744
_diffrn_reflns_theta_full        26.30
_diffrn_reflns_theta_max         26.30
_diffrn_reflns_theta_min         2.03
_diffrn_standards_decay_%        <2
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9853
_exptl_absorpt_correction_T_min  0.9661
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick, 1997'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.231
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.424
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     205
_refine_ls_number_reflns         3258
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0559
_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^)+(0.0976P)^2^+0.1252P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1440
_refine_ls_wR_factor_ref         0.1582
_reflns_number_gt                2529
_reflns_number_total             3258
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b903904j.txt
_cod_data_source_block           yshr99
_cod_original_sg_symbol_Hall     -p_1
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7150673