Alkaline earth catalysis for the 100% atom-efficient three component assembly of imidazolidin-2-ones
Merle Arrowsmith; William M. S. Shepherd; Michael S. Hill; Gabriele Kociok-Kohn; Chem.Commun. 50 (2014) 12676–; doi:10.1039/C4cc05223D

data_7115779
_publ_section_title
;
 Alkaline earth catalysis for the 100% atom-efficient three component
 assembly of imidazolidin-2-ones
;
_journal_name_full               Chem.Commun.
_journal_page_first              12676
_journal_paper_doi               10.1039/C4cc05223D
_journal_volume                  50
_journal_year                    2014
_chemical_formula_moiety         'C20 H29 N3 O'
_chemical_formula_sum            'C20 H29 N3 O'
_chemical_formula_weight         327.46
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 98.0090(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.92500(10)
_cell_length_b                   21.5710(4)
_cell_length_c                   14.9370(3)
_cell_measurement_reflns_used    14366
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     1890.45(6)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
;
 DENZO-SCALEPACK Z. Otwinowski and W. Minor, " 
 Processing of X-ray Diffraction Data Collected in Oscillation Mode ", 
 Methods in Enzymology, Volume 276: Macromolecular Crystallography, 
 part A, p.307-326, 1997,C.W. Carter, Jr. & R. M. Sweet, Eds., Academic Press.
;
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material
;
 WinGX publication routines (Farrugia, 2012)
;
_computing_structure_refinement
;
 SHELXL-2013 (Sheldrick, 2013)
 Sheldrick GM (2008) Acta Crystallogr A64:112--122 and 
 C. B. H\"ubschle, G. M. Sheldrick and B. Dittrich
 ShelXle: a Qt graphical user interface for SHELXL
 J. Appl. Cryst., 44, (2011) 1281-1284.
;
_computing_structure_solution
; 
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. , 
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R. 
 (1999) J. Appl. Cryst. 32, 115-119
;
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '322 1.5 degree images with \w scans'
_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  0.0594
_diffrn_reflns_av_unetI/netI     0.0501
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            21153
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.471
_diffrn_reflns_theta_min         3.150
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.972
_exptl_absorpt_correction_T_min  0.841
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.151
_exptl_crystal_description       block
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.500
_exptl_crystal_size_min          0.400
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.217
_refine_diff_density_rms         0.043
_refine_ls_extinction_coef       0.019(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     242
_refine_ls_number_reflns         4316
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0885
_refine_ls_R_factor_gt           0.0518
_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^)+(0.0611P)^2^+0.4509P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1214
_refine_ls_wR_factor_ref         0.1381
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2893
_reflns_number_total             4316
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4cc05223d2.cif
_cod_data_source_block           k13msh37
_cod_database_code               7115779
_shelx_estimated_absorpt_t_min   0.958
_shelx_estimated_absorpt_t_max   0.972
_shelxl_version_number           2013-4
_shelx_res_checksum              89098
_shelx_hkl_checksum              18276