s-Block chalcogenoether chemistry‒thio- and selenoether coordination with hard Group 2 ions.
Farina, Paolo; Levason, William; Reid, Gillian; Dalton transactions (Cambridge, England : 2003) 42 (2013) 89–99; doi:10.1039/c2dt31692g

data_7020688
_publ_section_title
;
 s-Block chalcogenoether chemistry--thio- and selenoether coordination
 with hard Group 2 ions.
;
_journal_issue                   1
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              89
_journal_page_last               99
_journal_paper_doi               10.1039/c2dt31692g
_journal_volume                  42
_journal_year                    2013
_chemical_formula_moiety         'C12 H30 O7 Se2 Sr 2+, 2(I 1-)'
_chemical_formula_structural     '((C12 H24 O4 Se2) (H2 O)3 Sr) I2'
_chemical_formula_sum            'C12 H30 I2 O7 Se2 Sr'
_chemical_formula_weight         785.70
_chemical_name_common
;trisaqua(1,4,10,13-tetraoxa-7,16-
diselenacyclooctadecane)strontium(ii) iodide
;
_chemical_name_systematic
;
trisaqua(1,4,10,13-tetraoxa-7,16-diselenacyclooctadecane)strontium(II) iodide
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_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_date             2012-05-22
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 91.305(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.2300(18)
_cell_length_b                   14.005(2)
_cell_length_c                   16.244(3)
_cell_measurement_reflns_used    14213
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.6
_cell_measurement_theta_min      3.2
_cell_volume                     2326.7(7)
_computing_cell_refinement
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_data_collection
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_data_reduction
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_type            'Rigaku HG Saturn724+ (2x2 bin mode)'
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       'Four-circle \k diffractometer'
_diffrn_measurement_device_type  'Rigaku AFC12 '
_diffrn_measurement_method       'Profile data from \w-scans'
_diffrn_radiation_collimation    'Confocal mirrors, VHF VariMax '
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1480
_diffrn_reflns_av_sigmaI/netI    0.1503
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            19785
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.17
_diffrn_source                   'Rotating anode X-ray tube'
_diffrn_source_type              'Rigaku FR-E+ Superbright'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.125
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.464
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;Jacobson, R.A. (1998). REQAB. Private communication to the
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.243
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chip
_exptl_crystal_F_000             1480
_exptl_crystal_size_max          0.01
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.01
_refine_diff_density_max         1.969
_refine_diff_density_min         -2.138
_refine_diff_density_rms         0.336
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         5295
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.1527
_refine_ls_R_factor_gt           0.0866
_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^)+(0.0951P)^2^+32.8566P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2043
_refine_ls_wR_factor_ref         0.2391
_reflns_number_gt                3089
_reflns_number_total             5295
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c2dt31692g.txt
_cod_data_source_block           12paf088ra
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7020688