Construction of helical coordination polymers via flexible conformers of bis(3-pyridyl)cyclotetramethylenesilane: metal(ii) and halogen effects on luminescence, thermolysis and catalysis.
Kim, Hyeun; Park, Minwoo; Lee, Haeri; Jung, Ok-Sang; Dalton transactions (Cambridge, England : 2003) 44 (2015) 8198–8204; doi:10.1039/c5dt00774g

data_7034754
_publ_section_title
;
 Construction of helical coordination polymers via flexible conformers of
 bis(3-pyridyl)cyclotetramethylenesilane: metal(ii) and halogen effects on
 luminescence, thermolysis and catalysis.
;
_journal_issue                   17
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8198
_journal_page_last               8204
_journal_paper_doi               10.1039/c5dt00774g
_journal_volume                  44
_journal_year                    2015
_chemical_formula_sum            'C14 H16 Br2 Hg N2 Si'
_chemical_formula_weight         600.79
_chemical_name_systematic
; 
 ? 
;
_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
_audit_update_record
;
2015-02-06 deposited with the CCDC.
2015-03-26 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 105.101(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.6956(4)
_cell_length_b                   8.1560(2)
_cell_length_c                   17.4487(5)
_cell_measurement_reflns_used    2721
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.87
_cell_measurement_theta_min      3.07
_cell_volume                     1744.34(9)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker APEX2'
_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      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Breeze CCD'
_diffrn_measurement_method       'phi and omega 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  0.0478
_diffrn_reflns_av_unetI/netI     0.0457
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14391
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.78
_exptl_absorpt_coefficient_mu    13.465
_exptl_absorpt_correction_T_max  0.2949
_exptl_absorpt_correction_T_min  0.0772
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.288
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.101
_refine_diff_density_min         -0.922
_refine_diff_density_rms         0.129
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         3426
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0320
_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^)+(0.0109P)^2^+4.3387P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0610
_refine_ls_wR_factor_ref         0.0674
_reflns_number_gt                2654
_reflns_number_total             3426
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5dt00774g2.cif
_cod_data_source_block           HgBr2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 3143 2015-03-26 13:38:13Z robertas 

 Adding full bibliography for 7034751--7034754.cif.
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7034754