Supramolecular Hydrogen Bond Isomerism in Organic Salts: A Transition from 0D to 1D
Trivedi, Darshak R.; Dastidar, Parthasarathi; Crystal Growth & Design 6 (2006) 1022–; doi:10.1021/cg050674r

data_4504794
_publ_section_title
;
 Supramolecular Hydrogen Bond Isomerism in Organic Salts:&#x2009; A
 Transition from 0D to 1D
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1022
_journal_paper_doi               10.1021/cg050674r
_journal_volume                  6
_journal_year                    2006
_chemical_formula_sum            'C20 H39 N O2'
_chemical_formula_weight         325.52
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.610
_cell_length_b                   8.949
_cell_length_c                   25.270
_cell_measurement_temperature    293(2)
_cell_volume                     4208.488
_computing_cell_refinement       'BRUKER AXS SMART 3'
_computing_data_collection       'BRUKER AXS SMART 3'
_computing_data_reduction        'BRUKER AXS SMART 3'
_computing_molecular_graphics    'PLATON, 'MERCURY 1.3'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 0.3
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'BRUKER SMART CCD AREA DETECTOR'
_diffrn_measurement_method       PHI-OMEGA
_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  0.1390
_diffrn_reflns_av_sigmaI/netI    0.0773
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            18892
_diffrn_reflns_theta_full        22.50
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         1.61
_diffrn_standards_decay_%        <10
_exptl_absorpt_coefficient_mu    0.064
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.028
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATE
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.539
_exptl_crystal_size_mid          0.390
_exptl_crystal_size_min          0.299
_refine_diff_density_max         0.224
_refine_diff_density_min         -0.342
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         2717
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.1477
_refine_ls_R_factor_gt           0.1018
_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^)+(0.1524P)^2^+1.2239P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2644
_refine_ls_wR_factor_ref         0.2973
_reflns_number_gt                1566
_reflns_number_total             2717
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg050674rsi20051226_081321.cif
_cod_data_source_block           dt0857
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'ORTHORHOMBIC' changed to
'orthorhombic' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        4208.5
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4504794