Naked-eye detection of c1-c4 alcohols based on ground-state intramolecular proton transfer.
Li, Zhanxian; Liu, Xingjiang; Zhao, Wanying; Wang, Sheng; Zhou, Wan; Wei, Liuhe; Yu, Mingming; Analytical chemistry 86 (2014) 2521–2525; doi:10.1021/ac403550t

data_1513800
_publ_section_title
;
 Naked-eye detection of c1-c4 alcohols based on ground-state
 intramolecular proton transfer.
;
_journal_issue                   5
_journal_name_full               'Analytical chemistry'
_journal_page_first              2521
_journal_page_last               2525
_journal_paper_doi               10.1021/ac403550t
_journal_volume                  86
_journal_year                    2014
_chemical_formula_moiety         'C20 H18 N2 O4'
_chemical_formula_sum            'C20 H18 N2 O4'
_chemical_formula_weight         350.36
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 114.168(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.9227(13)
_cell_length_b                   5.0106(3)
_cell_length_c                   20.9309(16)
_cell_measurement_temperature    293(2)
_cell_volume                     1714.9(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker-SHELXTL (Sheldrick, G.M., 2008)'
_computing_publication_material  'Bruker-SHELXTL (Sheldrick, G.M., 2008)'
_computing_structure_refinement  'Bruker-SHELXTL (Sheldrick, G.M., 2008)'
_computing_structure_solution    'Bruker-SHELXTL (Sheldrick, G.M., 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX 2 CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_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  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0469
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            5964
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.92
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.976
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2008/1, Sheldrick, G.M., (2008)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.357
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.195
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         3002
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.1035
_refine_ls_R_factor_gt           0.0548
_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^)+(0.0602P)^2^+0.3996P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1243
_refine_ls_wR_factor_ref         0.1503
_reflns_number_gt                1816
_reflns_number_total             3002
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ac403550t_si_001.cif
_cod_data_source_block           yumm
_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/current/ACS/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/n
_cod_database_code               1513800