Helical Foldamer Containing a Combination of Cyclopentane-1,2-diamine and 2,2-Dimethylmalonic Acid
Norikazu Yamazaki; Yosuke Demizu; Yukiko Sato; Mitsunobu Doi; Masaaki Kurihara; Journal of Organic Chemistry 78 (2013) 9991–9994; doi:10.1021/jo401505b

data_4028632
_publ_section_title
;
 Helical Foldamer Containing a Combination of Cyclopentane-1,2-diamine and
 2,2-Dimethylmalonic Acid
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9991
_journal_page_last               9994
_journal_paper_doi               10.1021/jo401505b
_journal_volume                  78
_journal_year                    2013
_chemical_absolute_configuration rm
_chemical_compound_source        synthesis
_chemical_formula_sum            'C46 H76 N8 O11'
_chemical_formula_weight         917.15
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 98.899(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.1213(19)
_cell_length_b                   9.1571(11)
_cell_length_c                   16.935(2)
_cell_measurement_reflns_used    8135
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      2.54
_cell_volume                     2469.9(5)
_computing_cell_refinement       'SAINT-PLUS (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT-PLUS (Bruker, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD (Bruker APEX)'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  'conforcal (Bruker Montel)'
_diffrn_radiation_source         'rotating anode (M18XCE)'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0296
_diffrn_reflns_av_sigmaI/netI    0.0252
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            21470
_diffrn_reflns_theta_full        27.10
_diffrn_reflns_theta_max         27.10
_diffrn_reflns_theta_min         1.22
_diffrn_standards_decay_%        3.50
_diffrn_standards_interval_count 21470
_diffrn_standards_interval_time  900
_diffrn_standards_number         444
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  1.0
_exptl_absorpt_correction_T_min  0.8169
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_description       plate
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.209
_refine_diff_density_min         -1.423
_refine_diff_density_rms         0.102
_refine_ls_abs_structure_details 'Flack (1983), 0 Friedel pairs'
_refine_ls_abs_structure_Flack   0.3(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.211
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     586
_refine_ls_number_reflns         5756
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.211
_refine_ls_R_factor_all          0.0708
_refine_ls_R_factor_gt           0.0695
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0909P)^2^+2.5549P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1850
_refine_ls_wR_factor_ref         0.1862
_reflns_number_gt                5599
_reflns_number_total             5756
_reflns_threshold_expression     I>\2s(I)
_cod_data_source_file            jo401505b_si_002.cif
_cod_data_source_block           dmz41
_cod_original_cell_volume        2470.0(5)
_cod_database_code               4028632