#------------------------------------------------------------------------------
#$Date: 2022-04-22 17:26:23 +0200 (vie 22 de abr de 2022) $
#$Revision: 274633 $
#$URL: svn://www.crystallography.net/cod/cif/1/51/64/1516481.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1516481
loop_
_publ_author_name
'Harrison, Andrew'
'Ibberson, Richard'
'Robb, Graeme'
'Whittaker, Gavin'
'Wilson, Chick'
'Youngson, Douglas'
_publ_section_title
;
 In situ neutron diffraction studies of single crystals and powders during
 microwave irradiation
;
_journal_coden_ASTM              FDISE6
_journal_name_full               'Faraday Discussions'
_journal_page_first              363
_journal_page_last               379
_journal_paper_doi               10.1039/b203379h
_journal_volume                  122
_journal_year                    2003
_chemical_formula_sum            'C9 H8 O4'
_chemical_formula_weight         180.16
_chemical_name_common            Aspirin
_chemical_name_systematic        '2-(acetoyloxy)benzoic acid'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.89(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.233(3)
_cell_length_b                   6.5440(10)
_cell_length_c                   11.231(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    100(1)
_cell_volume                     821.2(3)
_computing_molecular_graphics    'ORTEP (Johnson, 1994)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      200(2)
_diffrn_measurement_device       SXD
_diffrn_measurement_method       'time-of-flight LAUE diffraction'
_diffrn_radiation_source         'ISIS spallation source'
_diffrn_radiation_type           neutron
_diffrn_radiation_wavelength     0.5-5.0
_diffrn_reflns_av_R_equivalents  0.078
_diffrn_reflns_av_sigmaI/netI    0.0391
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            877
_exptl_absorpt_coefficient_mu    '1.0550, at 1 Angstrom'
_exptl_absorpt_correction_T_max  0.75
_exptl_absorpt_correction_T_min  0.45
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
The linear absorption coefficient is wavelength dependent
and it is calculated as: 
mu = 0.80 + 0.75 * lambda  [cm^-1]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.456
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular prism'
_exptl_crystal_F_000             21
_exptl_crystal_size_max          8
_exptl_crystal_size_mid          4
_exptl_crystal_size_min          1.5
_refine_diff_density_max         0.126
_refine_diff_density_min         -0.146
_refine_diff_density_rms         0.031
_refine_ls_extinction_coef       0.06
_refine_ls_extinction_method     'Becker-Coppens Lorentzian model'
_refine_ls_goodness_of_fit_ref   1.424
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         877
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.424
_refine_ls_R_factor_all          0.0954
_refine_ls_R_factor_gt           0.0954
_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/[σ²(Fo²)+(0.0763P)²+0.3996P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2433
_refine_ls_wR_factor_ref         0.2433
_reflns_number_gt                877
_reflns_number_total             877
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            program.txt
_cod_data_source_block           asp200
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1516481
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y-1/2, z-1/2'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
C1 C 0.1535(5) 0.5619(8) 0.0664(9) 0.0206(18) Uani 1 1 d
C2 C 0.2459(5) 0.4861(9) 0.0092(8) 0.0207(18) Uani 1 1 d
C3 C 0.2997(6) 0.3013(10) 0.0406(10) 0.029(2) Uani 1 1 d
C4 C 0.2608(6) 0.1908(10) 0.1345(10) 0.030(2) Uani 1 1 d
C5 C 0.1692(6) 0.2648(11) 0.1932(9) 0.029(2) Uani 1 1 d
C6 C 0.1168(5) 0.4475(9) 0.1604(9) 0.025(2) Uani 1 1 d
C7 C 0.0903(5) 0.7572(8) 0.0367(8) 0.0209(19) Uani 1 1 d
C8 C 0.3666(5) 0.7380(10) -0.0634(8) 0.0222(17) Uani 1 1 d
C9 C 0.3987(7) 0.8386(14) -0.1756(11) 0.033(2) Uani 1 1 d
O1 O 0.1216(7) 0.8593(13) -0.0510(11) 0.029(2) Uani 1 1 d
O2 O 0.0093(7) 0.8120(12) 0.0960(12) 0.033(3) Uani 1 1 d
O3 O 0.2866(6) 0.5846(11) -0.0881(10) 0.0220(19) Uani 1 1 d
O4 O 0.4034(8) 0.7810(16) 0.0358(12) 0.039(3) Uani 1 1 d
H1 H 0.3689(15) 0.241(2) -0.009(2) 0.046(5) Uani 1 1 d
H2 H 0.3017(16) 0.044(2) 0.158(2) 0.050(6) Uani 1 1 d
H3 H 0.1401(17) 0.177(3) 0.270(2) 0.046(5) Uani 1 1 d
H4 H 0.0444(13) 0.508(3) 0.206(2) 0.043(5) Uani 1 1 d
H5 H 0.463(3) 0.954(4) -0.145(3) 0.073(8) Uani 1 1 d
H6 H 0.323(3) 0.902(9) -0.220(5) 0.16(3) Uani 1 1 d
H7 H 0.429(5) 0.738(5) -0.240(4) 0.120(16) Uani 1 1 d
H8 H 0.0702(14) 0.984(3) -0.067(2) 0.049(6) Uani 1 1 d
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
C1 0.018(2) 0.018(2) 0.025(5) 0.004(3) 0.000(3) 0.0010(16)
C2 0.021(2) 0.022(2) 0.021(6) -0.005(3) 0.008(3) 0.0003(18)
C3 0.027(3) 0.023(3) 0.036(6) 0.005(3) 0.003(4) 0.0057(19)
C4 0.031(3) 0.023(3) 0.036(7) 0.000(3) 0.006(4) 0.005(2)
C5 0.027(3) 0.030(3) 0.030(6) 0.003(3) 0.008(4) 0.000(2)
C6 0.022(2) 0.025(3) 0.031(7) 0.000(3) 0.009(4) 0.003(2)
C7 0.021(2) 0.018(2) 0.025(6) 0.004(3) 0.008(3) 0.0019(18)
C8 0.018(2) 0.031(3) 0.019(5) -0.003(3) 0.005(3) -0.0037(19)
C9 0.035(3) 0.048(4) 0.016(6) 0.003(4) 0.005(4) -0.013(3)
O1 0.027(3) 0.035(4) 0.027(7) 0.011(4) 0.012(4) 0.011(3)
O2 0.035(3) 0.027(3) 0.040(8) 0.011(4) 0.019(5) 0.013(3)
O3 0.025(3) 0.027(3) 0.017(6) -0.006(3) 0.012(4) -0.003(2)
O4 0.034(4) 0.056(6) 0.027(7) -0.006(5) 0.006(5) -0.022(4)
H1 0.046(7) 0.044(8) 0.051(16) 0.001(8) 0.010(10) 0.012(6)
H2 0.059(9) 0.029(6) 0.062(18) 0.004(8) 0.012(11) 0.019(6)
H3 0.061(9) 0.044(8) 0.036(15) 0.016(8) 0.013(11) -0.002(6)
H4 0.037(6) 0.051(8) 0.042(15) 0.011(8) 0.007(8) 0.009(6)
H5 0.100(16) 0.075(13) 0.04(2) -0.002(11) 0.007(16) -0.048(12)
H6 0.062(14) 0.25(5) 0.17(5) 0.18(5) 0.00(2) -0.01(2)
H7 0.24(5) 0.064(16) 0.07(3) 0.004(16) 0.07(3) 0.00(2)
H8 0.046(7) 0.041(7) 0.060(19) 0.009(8) 0.010(10) 0.011(6)
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_length_neutron
_atom_type_scat_source
C C 6.646 'International Tables Vol C Table 4.4.4.1'
H H -3.739 'International Tables Vol C Table 4.4.4.1'
O O 5.803 'International Tables Vol C Table 4.4.4.1'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C2 C1 C6 117.4(6)
C2 C1 C7 125.2(7)
C6 C1 C7 117.5(6)
C1 C2 C3 122.0(8)
C1 C2 O3 121.9(6)
C3 C2 O3 115.9(7)
C2 C3 C4 119.2(8)
C2 C3 H1 120.6(13)
C4 C3 H1 120.2(12)
C5 C4 C3 119.6(6)
C5 C4 H2 121.1(16)
C3 C4 H2 119.2(16)
C6 C5 C4 120.3(9)
C6 C5 H3 120.6(12)
C4 C5 H3 119.0(12)
C5 C6 C1 121.5(7)
C5 C6 H4 121.3(12)
C1 C6 H4 117.2(11)
O2 C7 O1 122.9(7)
O2 C7 C1 119.5(7)
O1 C7 C1 117.6(7)
O4 C8 O3 121.9(9)
O4 C8 C9 126.7(7)
O3 C8 C9 111.4(8)
C8 C9 H5 105(2)
C8 C9 H6 109(2)
H5 C9 H6 111(4)
C8 C9 H7 115(2)
H5 C9 H7 114(3)
H6 C9 H7 103(5)
C7 O1 H8 111.3(18)
C8 O3 C2 116.6(8)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
C1 C2 1.368(10)
C1 C6 1.391(13)
C1 C7 1.483(8)
C2 C3 1.381(9)
C2 O3 1.386(13)
C3 C4 1.386(14)
C3 H1 1.08(2)
C4 C5 1.367(12)
C4 H2 1.088(15)
C5 C6 1.367(10)
C5 H3 1.11(2)
C6 H4 1.08(2)
C7 O2 1.234(12)
C7 O1 1.270(14)
C8 O4 1.182(15)
C8 O3 1.357(9)
C8 C9 1.498(15)
C9 H5 1.07(2)
C9 H6 1.03(3)
C9 H7 1.06(5)
O1 H8 1.006(17)
loop_
_cod_changelog_entry_id
_cod_changelog_entry_author
_cod_changelog_entry_date
_cod_changelog_entry_text
1 'Vaitkus, Antanas' 2022-04-22T18:20:00+03:00
'Updated bibliographic information.'
