Protonation and Subsequent Intramolecular Hydrogen Bonding as a Method to Control Chain Structure and Tune Luminescence in Heteroatomic Conjugated Polymers
Andrew P. Monkman; Lars-Olof Pålsson; Roger W. T. Higgins; Changsheng Wang; Martin R. Bryce; Andrei S. Batsanov; Judith A. K. Howard; Journal of the American Chemical Society 124 (2002) 6049–6055; doi:10.1021/ja012409+

data_4114817
_publ_contact_author             'Andrei S.Batsanov'
_publ_contact_author_email       a.s.batsanov@durham.ac.uk
_publ_section_title
;
 Protonation and Subsequent Intramolecular Hydrogen Bonding as a Method to
 Control Chain Structure and Tune Luminescence in Heteroatomic Conjugated
 Polymers
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6049
_journal_page_last               6055
_journal_paper_doi               10.1021/ja012409+
_journal_volume                  124
_journal_year                    2002
_chemical_formula_sum            'C18 H16 N2 O2'
_chemical_formula_weight         292.33
_chemical_melting_point          405(1)
_chemical_name_systematic
; 
 1,4-dimethoxy-2,5-bis(2-pyridyl)benzene 
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 97.183(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.4724(13)
_cell_length_b                   16.6094(14)
_cell_length_c                   18.744(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      15.5
_cell_volume                     2925.9(6)
_computing_cell_refinement       AFC/MSC
_computing_data_collection       AFC/MSC
_computing_data_reduction        'TEXSAN (MSC, 1989)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measurement_device       'Rigaku AFC6S 4-circle diffractometer'
_diffrn_measurement_method       '2\q/\w scans'
_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  0.0185
_diffrn_reflns_av_sigmaI/netI    0.0395
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            6581
_diffrn_reflns_theta_max         75.14
_diffrn_reflns_theta_min         3.57
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 147
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.706
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9742
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   'transmission from \y-scans'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_description       block
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.378
_refine_diff_density_min         -0.226
_refine_diff_density_rms         0.046
_refine_ls_extinction_coef       0.00108(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_all   1.044
_refine_ls_goodness_of_fit_obs   1.083
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     459
_refine_ls_number_reflns         5329
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.148
_refine_ls_restrained_S_obs      1.107
_refine_ls_R_factor_all          0.0655
_refine_ls_R_factor_obs          0.0506
_refine_ls_shift/esd_max         -0.003
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0559P)^2^+1.5887P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1499
_refine_ls_wR_factor_obs         0.1280
_reflns_number_observed          4319
_reflns_number_total             5334
_reflns_observed_criterion       I>2\s(I)
_cod_data_source_file            ja0124092B_1.cif
_cod_data_source_block           9
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0559P)^2^+1.5887P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0559P)^2^+1.5887P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        2925.8(5)
_cod_database_code               4114817