Construction of first anion-assisted helix inside a helix network
Basu, Tannistha; Mondal, Raju; CrystEngComm 12 (2010) 366–; doi:10.1039/b919235m

data_7212067
_publ_section_title
;
 Construction of first anion-assisted helix inside a helix network
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              366
_journal_paper_doi               10.1039/b919235m
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C11 H16 N4'
_chemical_formula_weight         204.28
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                99.3630(10)
_cell_angle_beta                 101.8060(10)
_cell_angle_gamma                106.7770(10)
_cell_formula_units_Z            2
_cell_length_a                   7.2653(2)
_cell_length_b                   8.4142(2)
_cell_length_c                   9.8774(2)
_cell_measurement_reflns_used    2134
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      34.86
_cell_measurement_theta_min      2.96
_cell_volume                     549.82(2)
_computing_cell_refinement       'Bruker APEX-2'
_computing_data_collection       'Bruker APEX-2'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Bruker APEX-2 CCD area detector'
_diffrn_measurement_method       '/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  0.0293
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            10025
_diffrn_reflns_theta_full        33.50
_diffrn_reflns_theta_max         33.50
_diffrn_reflns_theta_min         2.17
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.853349
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS v.2.03 (Bruker, 2001), R(int)=0.0305 before correction'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             220
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.493
_refine_diff_density_min         -0.221
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     204
_refine_ls_number_reflns         4223
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0750
_refine_ls_R_factor_gt           0.0577
_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^)+(0.0930P)^2^+0.0635P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1535
_refine_ls_wR_factor_ref         0.1629
_reflns_number_gt                3265
_reflns_number_total             4223
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b919235m.txt
_cod_data_source_block           09tba012_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7212067