A non-planar organic molecule with non-volatile electrical bistability for nano-scale data storage
Hu, Junping; Li, Yingfeng; Ji, Zhuoyu; Jiang, Guiyuan; Yang, Lianming; Hu, Wenping; Gao, Hongjun; Jiang, Lei; Wen, Yongqiang; Song, Yanlin; Zhu, Daoben; Journal of Materials Chemistry 17 (2007) 3530–; doi:10.1039/b703332j

data_7202858
_publ_section_title
;
 A non-planar organic molecule with non-volatile electrical bistability
 for nano-scale data storage
;
_journal_issue                   33
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              3530
_journal_paper_doi               10.1039/b703332j
_journal_volume                  17
_journal_year                    2007
_chemical_formula_sum            'C22 H17 N5 O'
_chemical_formula_weight         367.41
_chemical_melting_point          472.0(10)
_chemical_name_common
'4-3, 4-dicyanophenoxy-4'-dimethylaminoazobenzene(CPMAB)'
_chemical_name_systematic
'4-3, 4-dicyanophenoxy-4'-dimethylaminoazobenzene(CPMAB)'
_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
;
hydrogen atoms are generated by HFIX
instructions.
;
_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                   7.5300(15)
_cell_length_b                   12.173(2)
_cell_length_c                   40.996(8)
_cell_measurement_reflns_used    14285
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      2.88
_cell_volume                     3757.8(12)
_computing_cell_refinement
;
Molecular Structure Corporation (1994)
MSC/AFC Diffractometer Control Software
MSC, 3200 Research Forest Drive, The
Woodlands, TX 77381 USA.
;
_computing_data_collection
;
Molecular Structure Corporation (1994)
MSC/AFC Diffractometer Control Software
SC, 3200 Research Forest Drive, The
Woodlands, TX 77381, USA.
;
_computing_data_reduction
;
Sheldrick, G. M. (1998) SHELXS98, Program
for the Solution of Crystal Structure,
University of Gottingen, Germany.
;
_computing_molecular_graphics
;
Interactive Molecular Graphics XP, Virsion
4.2 for MSDOS (1990), Siemens Analytical
X-ray Instruments Inc., Madison, Wisconsin,
USA.
;
_computing_publication_material
;
Sheldrick, G. M. (1998) SHELXL98, Program
for the refinement of Crystal Structure,
University of Gottingen, Germany.
;
_computing_structure_refinement
;
Sheldrick, G. M. (1998) SHELXL98, Program
for the Refinement of Crystal Structure,
University of Gottingen, Germany.
;
_computing_structure_solution
;
Sheldrick, G. M. (1998) SHELXS98, Program
for the Solution of Crystal Structure,
University of Gottingen, Germany.
;
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean '100x100 microns'
_diffrn_measured_fraction_theta_full 0.909
_diffrn_measured_fraction_theta_max 0.909
_diffrn_measurement_device_type  'Rigaku RAXIS RAPID IP'
_diffrn_measurement_method       Oscillation
_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  0.0628
_diffrn_reflns_av_sigmaI/netI    0.0627
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       48
_diffrn_reflns_limit_l_min       -48
_diffrn_reflns_number            14285
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.88
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.955
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
HIGASHI, T. (1995). Abscor-Empirical
Absorption
Correction based on Fourier Series
Approximation.Rigaku Corporation,Tokyo,
Japan.
;
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.299
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1536
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.152
_refine_diff_density_min         -0.143
_refine_diff_density_rms         0.037
_refine_ls_extinction_coef       0.0079(8)
_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   0.960
_refine_ls_hydrogen_treatment
;
hydrogen coordinates ride on the coordinates
of the previous atom, the isotropic U values
are 1.2 OR 1.5 time over the U values of the
previous atom.
;
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         3010
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.0939
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0602P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1148
_refine_ls_wR_factor_ref         0.1331
_reflns_number_gt                1626
_reflns_number_total             3010
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b703332j.txt
_cod_data_source_block           CPMAB
_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.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' 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

'_chemical_melting_point' value '471~473' was changed to '472.0(10)'
- the average value was taken and precision was estimated.

Adriana Da\<skevi\<c, 2011-06-14
;
_cod_original_cell_volume        3757.8(13)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7202858