Synthesis of C~2~-Symmetric Bisamidines: A New Type of Chiral Metal-Free Lewis Acid Analogue Interacting with Carbonyl Groups
Deniz Akalay; Gerd Dürner; Jan W. Bats; Michael Bolte; Michael W. Göbel; Journal of Organic Chemistry 72 (2007) 5618–5624; doi:10.1021/jo070534j

data_4024056
_publ_section_title
;
 Synthesis of C~2~-Symmetric Bisamidines: A New Type of Chiral
 Metal-Free Lewis Acid Analogue Interacting with Carbonyl Groups
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5618
_journal_page_last               5624
_journal_paper_doi               10.1021/jo070534j
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C7 H13 N4, Cl'
_chemical_formula_sum            'C7 H13 Cl N4'
_chemical_formula_weight         188.66
_space_group_IT_number           14
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.149(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3429(12)
_cell_length_b                   10.1851(11)
_cell_length_c                   11.0769(18)
_cell_measurement_reflns_used    10751
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.7
_cell_measurement_theta_min      3.7
_cell_volume                     940.6(2)
_computing_cell_refinement       'X-Area (Stoe & Cie, 2001)'
_computing_data_collection       'X-Area (Stoe & Cie, 2001)'
_computing_data_reduction        'X-Area (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP in SHELXTL-Plus (Sheldrick, 1991)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997) '
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990) '
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'STOE IPDS II two-circle-diffractometer'
_diffrn_measurement_method       \w
_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  0.0239
_diffrn_reflns_av_sigmaI/netI    0.0172
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5066
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.52
_diffrn_reflns_theta_min         3.70
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.359
_exptl_absorpt_correction_T_max  0.8755
_exptl_absorpt_correction_T_min  0.8521
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'MULABS (Spek, 2003; Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.332
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.38
_refine_diff_density_max         0.274
_refine_diff_density_min         -0.189
_refine_diff_density_rms         0.044
_refine_ls_extinction_coef       0.075(7)
_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   1.116
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     130
_refine_ls_number_reflns         1723
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.116
_refine_ls_R_factor_all          0.0335
_refine_ls_R_factor_gt           0.0314
_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^)+(0.0387P)^2^+0.4422P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0800
_refine_ls_wR_factor_ref         0.0814
_reflns_number_gt                1631
_reflns_number_total             1723
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo070534jsi20070316_115424.cif
_cod_data_source_block           6a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4024056