Concomitant dimorphism and helical self-assembly in a C2h-symmetric ‘locked’ cyclitol
Mehta, Goverdhan; Sen, Saikat; Venkatesan, Kailasam; CrystEngComm 7 (2005) 398–; doi:10.1039/b506591g

data_7238097
_publ_section_title
;
 Concomitant dimorphism and helical self-assembly in a C2h-symmetric
 &#x2018;locked&#x2019; cyclitol
;
_journal_issue                   65
_journal_name_full               CrystEngComm
_journal_page_first              398
_journal_paper_doi               10.1039/b506591g
_journal_volume                  7
_journal_year                    2005
_chemical_formula_iupac          'C14 H24 O4'
_chemical_formula_moiety         'C14 H24 O4'
_chemical_formula_structural     'C14 H24 O4'
_chemical_formula_sum            'C14 H24 O4'
_chemical_formula_weight         256.33
_chemical_name_common
(4aR,8aS,9aR,10aS)perhydro-4a,8a,9a,10a-anthracenetetraol
_chemical_name_systematic
;
(4aR,8aS,9aR,10aS)perhydro-4a,8a,9a,10a-anthracenetetraol
;
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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
_cell_angle_alpha                86.177(13)
_cell_angle_beta                 82.547(13)
_cell_angle_gamma                73.200(12)
_cell_formula_units_Z            1
_cell_length_a                   5.958(5)
_cell_length_b                   5.994(5)
_cell_length_c                   9.867(8)
_cell_measurement_temperature    292(2)
_cell_volume                     334.3(5)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
'Ortep-3 for Windows (Farrugia, 1997) and CAMERON (Watkin et al., 1993)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      292(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0129
_diffrn_reflns_av_sigmaI/netI    0.0175
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2431
_diffrn_reflns_reduction_process ' ?'
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         2.08
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.9918
_exptl_absorpt_correction_T_min  0.9620
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             140
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.315
_refine_diff_density_min         -0.203
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     84
_refine_ls_number_reflns         1213
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0576
_refine_ls_R_factor_gt           0.0504
_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^)+(0.0789P)^2^+0.0974P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1405
_refine_ls_wR_factor_ref         0.1471
_reflns_number_gt                1038
_reflns_number_total             1213
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            b506591g.txt
_cod_data_source_block           tetrol2
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_database_code               7238097