Exploration of Effective Catalysts for Diyne Polycyclotrimerization, Synthesis of an Ester-Functionalized Hyperbranched Polyphenylene, and Demonstration of Its Utility as a Molecular Container with Implication for Controlled Drug Delivery
Liu, Jianzhao; Zhang, Li; Lam, Jacky W. Y.; Jim, Cathy K. W.; Yue, Yanan; Deng, Rui; Hong, Yuning; Qin, Anjun; Sung, Herman H. Y.; Williams, Ian D.; Jia, Guochen; Tang, Ben Zhong; Macromolecules 42 (2009) 7367–; doi:10.1021/ma901247q

data_1513293
_publ_section_title
;
 Exploration of Effective Catalysts for Diyne Polycyclotrimerization,
 Synthesis of an Ester-Functionalized Hyperbranched Polyphenylene, and
 Demonstration of Its Utility as a Molecular Container with Implication
 for Controlled Drug Delivery
;
_journal_issue                   19
_journal_name_full               Macromolecules
_journal_page_first              7367
_journal_paper_doi               10.1021/ma901247q
_journal_volume                  42
_journal_year                    2009
_chemical_formula_sum            'C21 H16 O4'
_chemical_formula_weight         332.34
_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                 99.6130(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.0066(14)
_cell_length_b                   11.9882(14)
_cell_length_c                   12.0112(14)
_cell_measurement_reflns_used    3043
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.13
_cell_measurement_theta_min      2.41
_cell_volume                     1704.6(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.986
_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  0.0379
_diffrn_reflns_av_sigmaI/netI    0.0389
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            11770
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.42
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.91
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.295
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.230
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         3293
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0601
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0527P)^2^+0.0336P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0914
_refine_ls_wR_factor_ref         0.0974
_reflns_number_gt                2481
_reflns_number_total             3293
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ma901247qsup1.cif
_cod_data_source_block           jian6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1513293