Influence of O−H···OP Hydrogen Bonding on the Supramolecular Architectures of Phosphorus-Based Hydrazones: Alternate Right- and Left-Handed Fused Helical Chains Based on O−H···OP Hydrogen Bonds in the Crystal Structure of C6H5P(O)[N(CH3)NCHC6H4-p-OH]2
Chandrasekhar, Vadapalli; Azhakar, Ramachandran; Bickley, Jamie F.; Steiner, Alexander; Crystal Growth & Design 6 (2006) 910–; doi:10.1021/cg050426v

data_4504667
_publ_section_title
;
 Influence of O&#x2212;H&#x00B7;&#x00B7;&#x00B7;OP Hydrogen Bonding on the
 Supramolecular Architectures of Phosphorus-Based Hydrazones:&#x2009;
 Alternate Right- and Left-Handed Fused Helical Chains Based on
 O&#x2212;H&#x00B7;&#x00B7;&#x00B7;OP Hydrogen Bonds in the Crystal
 Structure of C6H5P(O)[N(CH3)NCHC6H4-p-OH]2
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              910
_journal_paper_doi               10.1021/cg050426v
_journal_volume                  6
_journal_year                    2006
_chemical_formula_sum            'C22 H23 N4 O3 P'
_chemical_formula_weight         422.41
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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            4
_cell_length_a                   7.0504(8)
_cell_length_b                   35.688(5)
_cell_length_c                   8.7657(12)
_cell_measurement_temperature    213(2)
_cell_volume                     2205.6(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Stoe IPDS'
_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  0.0729
_diffrn_reflns_av_sigmaI/netI    0.0428
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       38
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            10842
_diffrn_reflns_theta_full        22.39
_diffrn_reflns_theta_max         22.39
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.155
_exptl_absorpt_correction_type   'not applied'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.272
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.132
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.114
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         2787
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.114
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0388
_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^)+(0.0535P)^2^+0.6474P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0996
_refine_ls_wR_factor_ref         0.1046
_reflns_number_gt                2623
_reflns_number_total             2787
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg050426vsi20060125_125302.cif
_cod_data_source_block           compound3
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               4504667