Synthesis, structures and optical spectroscopy of photoluminescent platinum-linked poly(silylacetylenes)
Wong, Wai-Yeung; Wong, Chun-Kin; Lu, Guo-Liang; Cheah, Kok-Wai; Shi, Jian-Xin; Lin, Zhenyang; Journal of the Chemical Society, Dalton Transactions  (2002) 4587–; doi:10.1039/b207575j

data_7012120
_publ_section_title
;
 Synthesis, structures and optical spectroscopy of photoluminescent
 platinum-linked poly(silylacetylenes)
;
_journal_issue                   24
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              4587
_journal_paper_doi               10.1039/b207575j
_journal_year                    2002
_chemical_formula_sum            'C34 H46 P2 Pt Si'
_chemical_formula_weight         739.83
_chemical_name_systematic
; 
? 
;
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.5910(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.0760(7)
_cell_length_b                   15.3158(9)
_cell_length_c                   18.5935(11)
_cell_measurement_temperature    293(2)
_cell_volume                     3435.4(3)
_computing_data_reduction        SAINT
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Smart CCD'
_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  0.0359
_diffrn_reflns_av_sigmaI/netI    0.0527
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            19872
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         1.72
_exptl_absorpt_coefficient_mu    4.232
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7378
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.430
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1488
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.571
_refine_diff_density_min         -0.592
_refine_diff_density_rms         0.081
_refine_ls_extinction_coef       0.00033(8)
_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   0.647
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     344
_refine_ls_number_reflns         7710
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.647
_refine_ls_R_factor_all          0.0527
_refine_ls_R_factor_gt           0.0286
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
calc w=1/[\s^2^(Fo^2^)+(0.0744P)^2^+0.0000P] where 
P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0708
_refine_ls_wR_factor_ref         0.0850
_reflns_number_gt                5328
_reflns_number_total             7710
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b207575j.txt
_cod_data_source_block           wy0606wm
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7012120