Synthesis and Characterization of a New Benzofulvene Polymer Showing a Thermoreversible Polymerization Behavior
Andrea Cappelli; Gal.la Pericot Mohr; Maurizio Anzini; Salvatore Vomero; Alessandro Donati; Mario Casolaro; Raniero Mendichi; Gianluca Giorgi; Francesco Makovec; Journal of Organic Chemistry 68 (2003) 9473–9476; doi:10.1021/jo035104h

data_4022555
_publ_contact_author_address
; Dipartimento Farmaco Chimico Tecnologico,
  Universit\`a degli Studi di Siena
  Via Aldo Moro
  I-53100 Siena
  Italy
;
_publ_contact_author_email       cappelli@unisi.it
_publ_contact_author_fax         '+39 0577 234333'
_publ_contact_author_name        'Andrea Cappelli'
_publ_contact_author_phone       '+39 0577 234230'
_publ_section_title
;
 Synthesis and Characterization of a New Benzofulvene Polymer
 Showing a Thermoreversible Polymerization Behavior
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9473
_journal_page_last               9476
_journal_paper_doi               10.1021/jo035104h
_journal_volume                  68
_journal_year                    2003
_chemical_formula_sum            'C19 H16 O3'
_chemical_formula_weight         292.3
_chemical_melting_point          63
_chemical_name_systematic
;
        Ethyl 3-(4-methylphenyl)-1-oxo-1H-indene-2-carboxylate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2003-01-31T17:19:27-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                110.050(10)
_cell_angle_beta                 95.090(10)
_cell_angle_gamma                109.17
_cell_formula_units_Z            2
_cell_length_a                   8.9030(10)
_cell_length_b                   8.9930(10)
_cell_length_c                   10.9270(10)
_cell_measurement_reflns_used    40
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      38
_cell_measurement_theta_min      10
_cell_volume                     756.03(14)
_computing_cell_refinement       'Siemens XSCANS'
_computing_data_collection       'Siemens XSCANS'
_computing_data_reduction        'Siemens XSCANS'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0077
_diffrn_reflns_av_unetI/netI     0.0122
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            3121
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.04
_diffrn_standards_decay_%        1.16
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.284
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             308
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.248
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.028
_refine_ls_extinction_coef       0.042(5)
_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   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2572
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0517
_refine_ls_R_factor_gt           0.0413
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0533P)^2^+0.1834P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1053
_refine_ls_wR_factor_ref         0.1132
_reflns_number_gt                2105
_reflns_number_total             2572
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo035104hrom20030728_022542_3.cif
_cod_data_source_block           vc565
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4022555