The influence of crystal packing effects upon the molecular structures of Ph3Sn(CH2)nSnPh3, n = 1 to 8, as determined by X-ray crystallography and DFT molecular orbital calculations. Supramolecular aggregation patterns sustained by C‒H⋯π interactions
Bettens, Ryan P. A.; Dakternieks, Dainis; Duthie, Andrew; Kuan, Fong Sheen; Tiekink, Edward R. T.; CrystEngComm 11 (2009) 1362–; doi:10.1039/b822682b

data_7200832
_publ_section_title
;
 The influence of crystal packing effects upon the molecular structures
 of Ph3Sn(CH2)nSnPh3, n = 1 to 8, as determined by X-ray
 crystallography and DFT molecular orbital calculations. Supramolecular
 aggregation patterns sustained by C--H&#x22EF;\p interactions
;
_journal_issue                   7
_journal_name_full               CrystEngComm
_journal_page_first              1362
_journal_paper_doi               10.1039/b822682b
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C38 H34 Sn2'
_chemical_formula_sum            'C38 H34 Sn2'
_chemical_formula_weight         728.03
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                78.80(4)
_cell_angle_beta                 80.02(4)
_cell_angle_gamma                80.76(4)
_cell_formula_units_Z            3
_cell_length_a                   7.898(4)
_cell_length_b                   17.096(7)
_cell_length_c                   18.254(9)
_cell_measurement_reflns_used    17
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      9.7
_cell_measurement_theta_min      7.3
_cell_volume                     2361(2)
_computing_cell_refinement       'MSC/AFC Diffractometer Control'
_computing_data_collection       'MSC/AFC Diffractometer Control (MSC, 1996)'
_computing_data_reduction        'teXsan for Windows (MSC, 1997)'
_computing_molecular_graphics
'ORTEPII (Johnson, 1976) & Brandenburg (Crystal Impact, 2006)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'PATTY in DIRDIF92 (Beurskens et al., 1992)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.994
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.022
_diffrn_reflns_av_sigmaI/netI    0.041
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            11213
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         3.0
_exptl_absorpt_coefficient_mu    1.611
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.776
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
DIFABS (Walker & Stuart, 1983)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.536
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1086
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.44
_refine_diff_density_min         -0.85
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.05
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     541
_refine_ls_number_reflns         10851
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.05
_refine_ls_R_factor_all          0.051
_refine_ls_R_factor_gt           0.028
_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^)+(0.0309P)^2^+1.4093P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.069
_refine_ls_wR_factor_ref         0.077
_reflns_number_gt                8298
_reflns_number_total             10828
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b822682b.txt
_cod_data_source_block           2(reduced)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_hydrogen_treatment' value 'constrd' was replaced with the
value 'constr' as specified in the replacement file
'src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_original_cell_volume        2360.6(19)
_cod_database_code               7200832