Low temperature phase transition induced biaxial negative thermal expansion of 2,4-dinitroanisole
Takahashi, Hiroki; Tamura, Rui; CrystEngComm 17 (2015) 8888–; doi:10.1039/C5CE00029G

data_7220954
_publ_section_title
;
 Low temperature phase transition induced biaxial negative thermal
 expansion of 2,4-dinitroanisole
;
_journal_issue                   46
_journal_name_full               CrystEngComm
_journal_page_first              8888
_journal_paper_doi               10.1039/C5CE00029G
_journal_volume                  17
_journal_year                    2015
_chemical_formula_sum            'C7 H6 N2 O5'
_chemical_formula_weight         198.14
_chemical_melting_point          369.8
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-05-18 deposited with the CCDC.
2015-06-08 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 98.052(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   8.794(3)
_cell_length_b                   12.678(3)
_cell_length_c                   15.437(5)
_cell_measurement_reflns_used    3515
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.1
_cell_volume                     1704.1(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0345
_diffrn_reflns_av_sigmaI/netI    0.0334
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            13575
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.11
_exptl_absorpt_coefficient_mu    0.134
_exptl_absorpt_correction_T_max  0.9801
_exptl_absorpt_correction_T_min  0.9711
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'CrystalClear (Rigaku Americas and Rigaku, 2009)'
_exptl_crystal_colour            'Pale yellow'
_exptl_crystal_density_diffrn    1.545
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             816
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: EtOH'
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.257
_refine_diff_density_min         -0.201
_refine_diff_density_rms         0.032
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.093
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     274
_refine_ls_number_reflns         3895
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.093
_refine_ls_R_factor_all          0.1067
_refine_ls_R_factor_gt           0.0594
_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^)+(0.0605P)^2^+0.2313P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1274
_refine_ls_wR_factor_ref         0.1483
_reflns_number_gt                2415
_reflns_number_total             3895
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ce00029g2.cif
_cod_data_source_block           24DNAN_a_298K
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 7220936--7220954.cif.
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7220954