Mercury halide coordination polymers exhibiting reversible structural transformation
Mahat Chhetri, Pradhumna; Yang, Xiang-Kai; Chen, Jhy-Der; CrystEngComm 20 (2018) 2126–; doi:10.1039/C8CE00086G

data_7230247
_publ_section_title
;
 Mercury halide coordination polymers exhibiting reversible structural
 transformation
;
_journal_issue                   15
_journal_name_full               CrystEngComm
_journal_page_first              2126
_journal_paper_doi               10.1039/C8CE00086G
_journal_volume                  20
_journal_year                    2018
_chemical_formula_sum            'C20 H18 Br2 Hg N4 O2'
_chemical_formula_weight         706.79
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-12-01 deposited with the CCDC.
2018-03-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
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_cell_measurement_temperature    300(2)
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_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
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_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      300(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0735
_diffrn_reflns_av_unetI/netI     0.0795
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_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.991
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_exptl_absorpt_correction_type   multi-scan
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_exptl_crystal_colour            colourless
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_exptl_crystal_size_max          0.400
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_refine_ls_extinction_coef       0.00088(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
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_refine_ls_hydrogen_treatment    constr
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_refine_ls_number_parameters     263
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_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.966
_refine_ls_R_factor_all          0.0789
_refine_ls_R_factor_gt           0.0403
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0186P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0746
_refine_ls_wR_factor_ref         0.0852
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3453
_reflns_number_total             5405
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce00086g2.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'multi_scan' changed to
'multi-scan' according to
/home/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 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7230245--7230249.cif.
;
_cod_database_code               7230247
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.099
_shelx_estimated_absorpt_t_max   0.223
_shelx_res_checksum              66434