A tetrakis(tertiary amide) derivative of quadricyclane: 3-isopropylidene-tetracyclo[3.2.0.0^2,7^.0^4,6^]heptan-1,5,6,7-tetracarboxylic acid tetrakis(diethylamide)
Winkler, Torsten; Herges, Rainer; Jones, Peter G.; Dix, Ina; Acta Crystallographica Section E 59 (2003) o1103–o1105; doi:10.1107/S1600536803013898

data_2202324
_publ_section_title
;A tetrakis(tertiary amide) derivative of quadricyclane:
 3-isopropylidene-tetracyclo[3.2.0.0^2,7^.0^4,6^]heptan-1,5,6,7-tetracarboxylic
 acid tetrakis(diethylamide)
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1103
_journal_page_last               o1105
_journal_paper_doi               10.1107/S1600536803013898
_journal_volume                  59
_journal_year                    2003
_chemical_formula_sum            'C30 H48 N4 O4'
_chemical_formula_weight         528.72
_chemical_name_systematic
;
 3-Isopropylidene-tetracyclo[3.2.0.0^2,7^.0^4,6^]heptan-1,5,6,7-
 tetracarboxylic acid tetrakis(diethylamide)
;
_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                109.065(3)
_cell_angle_beta                 101.073(3)
_cell_angle_gamma                106.800(3)
_cell_formula_units_Z            2
_cell_length_a                   10.8375(8)
_cell_length_b                   11.6922(8)
_cell_length_c                   13.7337(10)
_cell_measurement_reflns_used    6653
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      28.5
_cell_measurement_theta_min      2.2
_cell_volume                     1493.6(2)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    ' XP (Siemens, 1994)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD'
_diffrn_measurement_method       \w-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  0.0327
_diffrn_reflns_av_sigmaI/netI    0.0396
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            17805
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         1.65
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.176
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.333
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     373
_refine_ls_number_reflns         7353
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0606
_refine_ls_R_factor_gt           0.0418
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0586P)^2^+0.0907P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1073
_refine_ls_wR_factor_ref         0.1164
_reflns_number_gt                5396
_reflns_number_total             7353
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt6292.cif
_cod_data_source_block           I
_cod_depositor_comments
;
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_cell_volume        1493.59(19)
_cod_database_code               2202324
_cod_database_fobs_code          2202324