Single-Crystal-to-Single-Crystal Topochemical Polymerizations of a Terminal Diacetylene: Two Remarkable Transformations Give the Same Conjugated Polymer
Xi Ouyang; Frank W. Fowler; Joseph W. Lauher; Journal of the American Chemical Society 125 (2003) 12400–12401; doi:10.1021/ja037557+

data_4114262
_publ_contact_author_address
;Department of Chemistry    
State University of New York
Stony Brook, NY 11794    
;
_publ_contact_author_email       jlauher@notes.cc.sunysb.edu
_publ_contact_author_fax         631-632-7960
_publ_contact_author_name        'Joseph W. Lauher'
_publ_contact_author_phone       631-632-7925
_publ_section_title
;
 Single-Crystal-to-Single-Crystal Topochemical Polymerizations of a
 Terminal Diacetylene: Two Remarkable Transformations Give the Same
 Conjugated Polymer
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12400
_journal_page_last               12401
_journal_paper_doi               10.1021/ja037557+
_journal_volume                  125
_journal_year                    2003
_chemical_formula_sum            'C26 H22 N4 O6'
_chemical_formula_weight         486.48
_chemical_name_common
;
3,5-dihydroxy-benzoic_acid_penta-2,4-diynyl_ester
_polymer_N,N'bis-pyridin-4-ylmethyloxalamide
;
_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                 91.913(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.568(12)
_cell_length_b                   4.912(4)
_cell_length_c                   33.07(3)
_cell_measurement_temperature    273(2)
_cell_volume                     2365(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.437
_diffrn_measured_fraction_theta_max 0.437
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0617
_diffrn_reflns_av_sigmaI/netI    0.1790
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            2751
_diffrn_reflns_theta_full        26.22
_diffrn_reflns_theta_max         26.22
_diffrn_reflns_theta_min         1.51
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.366
_exptl_crystal_density_meas      0
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          .8
_exptl_crystal_size_mid          .15
_exptl_crystal_size_min          .15
_refine_diff_density_max         0.269
_refine_diff_density_min         -0.343
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.774
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         3574
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.774
_refine_ls_R_factor_all          0.1961
_refine_ls_R_factor_gt           0.0844
_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^)+(0.1158P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1901
_refine_ls_wR_factor_ref         0.2218
_reflns_number_gt                991
_reflns_number_total             3574
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0375572Bsi20030726_113018_2.cif
_cod_data_source_block           helixpolymer
_cod_database_code               4114262