"Push-push and push-pull" polystannanes.
Dhindsa, J. S.; Jacobs, B. F.; Lough, A. J.; Foucher, D. A.; Dalton transactions (Cambridge, England : 2003) 47 (2018) 14094–14100; doi:10.1039/c8dt03043j

data_7047639
_publ_section_title
;
 &quot;Push-push and push-pull&quot; polystannanes.
;
_journal_issue                   39
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              14094
_journal_page_last               14100
_journal_paper_doi               10.1039/c8dt03043j
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C14 H14 Cl2 O2 Sn'
_chemical_formula_sum            'C14 H14 Cl2 O2 Sn'
_chemical_formula_weight         403.84
_space_group_crystal_system      monoclinic
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_space_group_name_H-M_alt        'C 1 c 1'
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-07-25 deposited with the CCDC.
2018-09-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 118.061(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.5703(12)
_cell_length_b                   13.3854(15)
_cell_length_c                   11.0460(12)
_cell_measurement_reflns_used    5643
_cell_measurement_temperature    147(2)
_cell_measurement_theta_max      27.34
_cell_measurement_theta_min      2.51
_cell_volume                     1509.6(3)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT (Sheldrick, 2008)'
_diffrn_ambient_temperature      147(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Kappa APEX-DUO CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0344
_diffrn_reflns_av_unetI/netI     0.0447
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            10724
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.505
_diffrn_reflns_theta_min         2.509
_diffrn_source                   'sealed tube with multi-layer optics'
_exptl_absorpt_coefficient_mu    2.040
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6420
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.777
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.040
_refine_diff_density_max         1.512
_refine_diff_density_min         -0.585
_refine_diff_density_rms         0.110
_refine_ls_abs_structure_details
; 
 Refined as an inversion twin. 
;
_refine_ls_abs_structure_Flack   0.13(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.102
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         3207
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0409
_refine_ls_R_factor_gt           0.0318
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0274P)^2^+0.0965P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0582
_refine_ls_wR_factor_ref         0.0613
_reflns_Friedel_coverage         0.995
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                2914
_reflns_number_total             3207
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt03043j3.cif
_cod_data_source_block           d1531_b
_cod_depositor_comments          'Adding full bibliography for 7047639.cif.'
_cod_database_code               7047639
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.822
_shelx_estimated_absorpt_t_max   0.923
_shelx_res_checksum              62260