A concise approach to the spiroiminal fragment of marineosins.
Li, Guang; Zhang, Xun; Li, Qi; Feng, Pengju; Shi, Yian; Organic & biomolecular chemistry 11 (2013) 2936–2938; doi:10.1039/c3ob40208h

data_7152904
_publ_section_title
;
 A concise approach to the spiroiminal fragment of marineosins.
;
_journal_issue                   18
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2936
_journal_page_last               2938
_journal_paper_doi               10.1039/c3ob40208h
_journal_volume                  11
_journal_year                    2013
_chemical_formula_moiety         'C14 H20 N2 O2'
_chemical_formula_sum            'C14 H20 N2 O2'
_chemical_formula_weight         248.32
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.663(3)
_cell_length_b                   8.2891(17)
_cell_length_c                   21.056(4)
_cell_measurement_reflns_used    10122
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.62
_cell_volume                     2733.7(9)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELX97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'MM007-HF CCD(Saturn 724+)'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0665
_diffrn_reflns_av_sigmaI/netI    0.0498
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            9483
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9863
_exptl_absorpt_correction_T_min  0.9839
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2007)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.186
_refine_diff_density_min         -0.196
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.245
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         2396
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.245
_refine_ls_R_factor_all          0.0889
_refine_ls_R_factor_gt           0.0731
_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^)+(0.0253P)^2^+1.9630P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1230
_refine_ls_wR_factor_ref         0.1285
_reflns_number_gt                2066
_reflns_number_total             2396
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ob40208h.txt
_cod_data_source_block           a4
_cod_original_cell_volume        2733.7(10)
_cod_original_sg_symbol_H-M      Pbcn
_cod_database_code               7152904