Synthesis of (NH)m(NMe)4-m-Bridged Calix[4]pyridines and the Effect of NH Bridge on Structure and Properties
En-Xuan Zhang; De-Xian Wang; Zhi-Tang Huang; Mei-Xiang Wang; Journal of Organic Chemistry 74 (2009) 8595–8603; doi:10.1021/jo901609u

data_4025043
_publ_section_title
;
Synthesis of (NH)m(NMe)4-m-Bridged Calix[4]pyridines and the Effect of NH
Bridge on Structure and Properties
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8595
_journal_page_last               8603
_journal_paper_doi               10.1021/jo901609u
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C23 H28 N8 O3'
_chemical_formula_weight         464.53
_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                 102.14(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.971(3)
_cell_length_b                   9.757(2)
_cell_length_c                   17.757(4)
_cell_measurement_reflns_used    5128
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.39
_cell_volume                     2366.5(8)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 1994)'
_computing_publication_material  'SHELX97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'MM007HF + CCD (Saturn724+)'
_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  0.0333
_diffrn_reflns_av_sigmaI/netI    0.0344
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            16566
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9848
_exptl_absorpt_correction_T_min  0.9786
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.304
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.228
_refine_diff_density_min         -0.202
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.100
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         5421
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0622
_refine_ls_R_factor_gt           0.0545
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0428P)^2^+1.0367P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1199
_refine_ls_wR_factor_ref         0.1250
_reflns_number_gt                4803
_reflns_number_total             5421
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo901609u_si_003.cif
_cod_data_source_block           mx119
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4025043