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_7200836
_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         'C43 H44 Sn2'
_chemical_formula_sum            'C43 H44 Sn2'
_chemical_formula_weight         798.16
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90
_cell_angle_beta                 103.06(5)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   32.89(3)
_cell_length_b                   7.650(10)
_cell_length_c                   31.334(8)
_cell_measurement_reflns_used    17
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      9.7
_cell_measurement_theta_min      7.5
_cell_volume                     7680(12)
_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      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       AFC7R
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_detector       'scintillation counter'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.125
_diffrn_reflns_av_sigmaI/netI    0.126
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            6865
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         3.1
_diffrn_standards_decay_%        -13.4
_diffrn_standards_interval_count 400
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.327
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.381
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3216
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.08
_refine_diff_density_max         2.78
_refine_diff_density_min         -1.43
_refine_diff_density_rms         0.273
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.69
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     119
_refine_ls_number_reflns         6738
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.69
_refine_ls_R_factor_all          0.297
_refine_ls_R_factor_gt           0.120
_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^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.327
_refine_ls_wR_factor_ref         0.394
_reflns_number_gt                1951
_reflns_number_total             6738
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b822682b.txt
_cod_data_source_block           7
_cod_original_sg_symbol_Hall     '-C 2yc '
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7200836