Hydrogen-bond network in isomeric phenylenedipropynoic acids and their DABCO salts. Water mediated helical hydrogen bond motifs
Saravanakumar, Rajendran; Varghese, Babu; Sankararaman, Sethuraman; CrystEngComm 11 (2009) 337–346; doi:10.1039/b816658g

data_7215528
_publ_section_title
;
 Hydrogen-bond network in isomeric phenylenedipropynoic acids and their
 DABCO salts. Water mediated helical hydrogen bond motifs
;
_journal_coden_ASTM              CRECF4
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              337
_journal_page_last               346
_journal_paper_doi               10.1039/b816658g
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C18 H22 N2 O6'
_chemical_formula_weight         362.38
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 97.067(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5222(4)
_cell_length_b                   9.1871(5)
_cell_length_c                   23.0730(11)
_cell_measurement_reflns_used    6322
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.7
_cell_volume                     1792.76(15)
_computing_cell_refinement       'APEX2/SAINT (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT/XPREP (Bruker, 2004)'
_computing_molecular_graphics
'ORTEP3 (Farrugia, 1997) and Mercury (Bruno et al., 2002)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altornare et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker axs kappa apex2 CCD Diffractometer'
_diffrn_measurement_method       '\w and \f scan'
_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  0.0822
_diffrn_reflns_av_sigmaI/netI    0.0302
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            30271
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         0.89
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.9657
_exptl_absorpt_correction_T_min  0.9212
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS(Buker, 1999)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.360
_refine_diff_density_min         -0.220
_refine_diff_density_rms         0.071
_refine_ls_extinction_coef       0.0016(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.113
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     268
_refine_ls_number_reflns         3147
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.111
_refine_ls_R_factor_all          0.0961
_refine_ls_R_factor_gt           0.0765
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0597P)^2^+3.7519P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2051
_refine_ls_wR_factor_ref         0.2269
_reflns_number_gt                2408
_reflns_number_total             3147
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7200491
_cod_data_source_file            b816658g.txt
_cod_data_source_block           ssr2
_cod_depositor_comments
;
 Updated bibliographic information.

 Antanas Vaitkus,
 2019-09-18

 Marked entry as a duplicate of entry 7200491.

 Antanas Vaitkus,
 2019-09-18
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7215528