Silicon-Containing Dipeptidic Aspartame and Neotame Analogues
Dörrich, Steffen; Falgner, Steffen; Schweeberg, Sarah; Burschka, Christian; Brodin, Peter; Wissing, Britt Marie; Basta, Babro; Schell, Peter; Bauer, Udo; Tacke, Reinhold; Organometallics 31 (2012) 5903–; doi:10.1021/om300442e

data_4078828
_publ_section_title
;
 Silicon-Containing Dipeptidic Aspartame and Neotame Analogues
;
_journal_issue                   16
_journal_name_full               Organometallics
_journal_page_first              5903
_journal_paper_doi               10.1021/om300442e
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C8 H20 N O2 Si, Cl'
_chemical_formula_sum            'C8 H20 Cl N O2 Si'
_chemical_formula_weight         225.79
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.75(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.1765(18)
_cell_length_b                   10.3293(16)
_cell_length_c                   15.134(3)
_cell_measurement_reflns_used    2983
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      22.05
_cell_measurement_theta_min      5.6
_cell_volume                     1421.4(5)
_computing_cell_refinement       Stoe-IPDS
_computing_data_collection       Stoe-IPDS
_computing_data_reduction        Stoe-IPDS
_computing_molecular_graphics    Ortep/Povray
_computing_publication_material  Bruker-SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.948
_diffrn_measured_fraction_theta_max 0.948
_diffrn_measurement_device_type  image_plate_Stoe-IPDS
_diffrn_measurement_method       'omega scan'
_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  0.0464
_diffrn_reflns_av_sigmaI/netI    0.0574
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            6031
_diffrn_reflns_theta_full        26.49
_diffrn_reflns_theta_max         26.49
_diffrn_reflns_theta_min         2.72
_exptl_absorpt_coefficient_mu    0.331
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.055
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             488
_exptl_crystal_size_max          .5
_exptl_crystal_size_mid          .4
_exptl_crystal_size_min          .3
_refine_diff_density_max         0.489
_refine_diff_density_min         -0.185
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.04(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.906
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         4431
_refine_ls_number_restraints     31
_refine_ls_restrained_S_all      0.903
_refine_ls_R_factor_all          0.0686
_refine_ls_R_factor_gt           0.0446
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0644P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1016
_refine_ls_wR_factor_ref         0.1088
_reflns_number_gt                3091
_reflns_number_total             4431
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300442e_si_001.cif
_cod_data_source_block           dor02e
_cod_original_sg_symbol_H-M      P21
_cod_database_code               4078828