A Conformationally Programmable Ligand
Yong S. Chong; Mark D. Smith; Ken D. Shimizu; Journal of the American Chemical Society 123 (2001) 7463–7464; doi:10.1021/ja0158713

data_4115629
_publ_section_title
;
 A Conformationally Programmable Ligand
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7463
_journal_page_last               7464
_journal_paper_doi               10.1021/ja0158713
_journal_volume                  123
_journal_year                    2001
_chemical_formula_sum            'C50 H52 N4 O8'
_chemical_formula_weight         836.96
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 98.479(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   14.2184(11)
_cell_length_b                   20.7021(15)
_cell_length_c                   7.5034(6)
_cell_measurement_reflns_used    5047
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.378
_cell_measurement_theta_min      2.443
_cell_volume                     2184.5(3)
_computing_cell_refinement       'SAINT+ NT V6.02a (Bruker, 1998)'
_computing_data_collection       'SMART NT V5.619 (Bruker, 2000)'
_computing_data_reduction        'SAINT+ NT V6.02a'
_computing_molecular_graphics    'SHELXTL V5.1 (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL V5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'omega 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  0.0389
_diffrn_reflns_av_sigmaI/netI    0.0274
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            16358
_diffrn_reflns_theta_full        26.39
_diffrn_reflns_theta_max         26.39
_diffrn_reflns_theta_min         1.45
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.272
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.583
_refine_diff_density_min         -0.252
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     313
_refine_ls_number_reflns         4475
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0533
_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^)+(0.1004P)^2^+0.5409P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1554
_refine_ls_wR_factor_ref         0.1620
_reflns_number_gt                3730
_reflns_number_total             4475
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0158713_s2_1.cif
_cod_data_source_block           yctrlg1
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4115629