Hg(ii) supramolecular isomers: structural transformation and photoluminescence change
Thapa, Kedar Bahadur; Hsu, Yi-Fen; Lin, Hsuan-Chou; Chen, Jhy-Der; CrystEngComm 17 (2015) 7574–; doi:10.1039/C5CE01098E

data_7221975
_publ_section_title
;
 Hg(ii) supramolecular isomers: structural transformation and
 photoluminescence change
;
_journal_issue                   39
_journal_name_full               CrystEngComm
_journal_page_first              7574
_journal_paper_doi               10.1039/C5CE01098E
_journal_volume                  17
_journal_year                    2015
_chemical_formula_sum            'C16 H18 Br2 Hg N4 O2'
_chemical_formula_weight         658.75
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-06-02 deposited with the CCDC.
2015-09-01 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.45900(10)
_cell_length_b                   8.45900(10)
_cell_length_c                   27.3117(5)
_cell_measurement_reflns_used    4692
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.17
_cell_measurement_theta_min      3.29
_cell_volume                     1954.28(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0418
_diffrn_reflns_av_sigmaI/netI    0.0483
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            10386
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         2.52
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    11.982
_exptl_absorpt_correction_T_max  0.3804
_exptl_absorpt_correction_T_min  0.1235
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'sadabs v2008/1(bruker axs, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.239
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.427
_refine_diff_density_min         -0.737
_refine_diff_density_rms         0.120
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.003(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     114
_refine_ls_number_reflns         2420
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0456
_refine_ls_R_factor_gt           0.0317
_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^)+(0.0201P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0555
_refine_ls_wR_factor_ref         0.0585
_reflns_number_gt                1987
_reflns_number_total             2420
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ce01098e2.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 7221974--7221977.cif.
;
_cod_original_sg_symbol_H-M      P4(3)2(1)2
_cod_database_code               7221975