Phosphorus copies of PPV: pi-conjugated polymers and molecules composed of alternating phenylene and phosphaalkene moieties.
Wright, Vincent A; Patrick, Brian O; Schneider, Celine; Gates, Derek P; Journal of the American Chemical Society 128 (2006) 8836–8844; doi:10.1021/ja060816l

data_4101527
_publ_section_title
;
 Phosphorus copies of PPV: pi-conjugated polymers and molecules
 composed of alternating phenylene and phosphaalkene moieties.
;
_journal_issue                   27
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8836
_journal_page_last               8844
_journal_paper_doi               10.1021/ja060816l
_journal_volume                  128
_journal_year                    2006
_chemical_formula_sum            'C19 H25 O P Si'
_chemical_formula_weight         328.45
_chemical_name_systematic
;
 ?
;
_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                 101.780(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8060(10)
_cell_length_b                   16.799(2)
_cell_length_c                   14.801(2)
_cell_measurement_reflns_used    7123
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.17
_cell_measurement_theta_min      2.80
_cell_volume                     1900.0(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker X8 APEX'
_diffrn_measurement_method       'area detector'
_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  0.0330
_diffrn_reflns_av_sigmaI/netI    0.0187
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            45391
_diffrn_reflns_theta_full        27.75
_diffrn_reflns_theta_max         27.75
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    0.208
_exptl_absorpt_correction_T_max  0.979
_exptl_absorpt_correction_T_min  0.903
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.148
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.367
_refine_diff_density_min         -0.194
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.117
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     204
_refine_ls_number_reflns         4456
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.117
_refine_ls_R_factor_all          0.0429
_refine_ls_R_factor_gt           0.0351
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0637P)^2^+0.2377P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1033
_refine_ls_wR_factor_ref         0.1079
_reflns_number_gt                3670
_reflns_number_total             4456
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja060816lsi20060202_104124.cif
_cod_data_source_block           dg021
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4101527