Synthesis and solid state structure for a series of poly(1-pyrrolylmethyl)benzene derivatives. Control of the interplaying π–π and C–Hπ interactions?
José Giner Planas; Carles Masalles; Reijo Sillanpää; Raikko Kivekäs; Francesc Teixidor; Clara Viñas; CrystEngComm  (2006) 75–83; doi:10.1039/b515930j

data_7203185
_publ_section_title
;
 Synthesis and solid state structure for a series of
 poly(1-pyrrolylmethyl)benzene derivatives. Control of the interplaying
 \p--\p and C--H\p interactions?
;
_journal_name_full               CrystEngComm
_journal_page_first              75
_journal_page_last               83
_journal_paper_doi               10.1039/b515930j
_journal_year                    2006
_chemical_formula_moiety         'C26 H26 N4'
_chemical_formula_sum            'C26 H26 N4'
_chemical_formula_weight         394.51
_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                 92.911(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.7470(6)
_cell_length_b                   15.511(2)
_cell_length_c                   11.798(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      23.4
_cell_measurement_theta_min      10.3
_cell_volume                     1050.3(2)
_computing_cell_refinement       'CAD4 EXPRESS (Enraf Nonius, 1994)'
_computing_data_collection       'CAD4 EXPRESS (Enraf Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms, 1996)'
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Enraf Nonius CAD4'
_diffrn_measurement_method       \w--\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0866
_diffrn_reflns_av_sigmaI/netI    0.0406
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            2578
_diffrn_reflns_theta_full        64.96
_diffrn_reflns_theta_max         64.96
_diffrn_reflns_theta_min         4.71
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.580
_exptl_absorpt_correction_T_max  0.9336
_exptl_absorpt_correction_T_min  0.8928
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details
;
Sheldrick, G.M. (anon) SHELX97 Release 97-2 (1998)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.247
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       prism
_exptl_crystal_F_000             420
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.200
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1782
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0699
_refine_ls_R_factor_gt           0.0452
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
w=1/[\s^2^(Fo^2^)+(0.0491P)^2^+0.4240P] where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1096
_refine_ls_wR_factor_ref         0.1202
_reflns_number_gt                1384
_reflns_number_total             1782
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b515930j.txt
_cod_data_source_block           compound_2
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7203185