π-Bond cooperativity and anticooperativity effects in resonance-assisted hydrogen bonds (RAHBs)
V. Bertolasi; L. Pretto; G. Gilli; P. Gilli; Acta Crystallographica, Section B 62 (2006) 850–863; doi:10.1107/S0108768106020933

data_2100614
_publ_section_title
;
\p-Bond cooperativity and anticooperativity effects in
resonance-assisted hydrogen bonds (RAHBs)
;
_journal_coeditor_code           DE5027
_journal_date_accepted           2006-06-01
_journal_date_recd_electronic    2006-02-08
_journal_issue                   4
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              850
_journal_page_last               863
_journal_paper_category          FA
_journal_paper_doi               10.1107/S0108768106020933
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C15 H11 Cl O3'
_chemical_formula_sum            'C15 H11 Cl O3'
_chemical_formula_weight         274.69
_chemical_name_systematic
;
(2Z)-1-(2-hydroxy-5-chlorophenyl)-3-phenyl-1,3-propanedione enol
;
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_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
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_atom_sites_solution_hydrogens   difmap
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_atom_sites_solution_secondary   difmap
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_cell_angle_alpha                90.00
_cell_angle_beta                 105.137(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.9320(10)
_cell_length_b                   5.3108(2)
_cell_length_c                   17.8780(10)
_cell_measurement_reflns_used    5187
_cell_measurement_temperature    295
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      1.66
_cell_volume                     1276.90(10)
_computing_cell_refinement       'Denzo SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Kappa CCD server software (Nonius, 1997)'
_computing_data_reduction        'Denzo SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP III (Burnett & Johnson, 1996)'
_computing_publication_material
;
SHELXL-97 (Sheldrick, 1997), PARST (Nardelli, 1995)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      295
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '\f scans and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.036
_diffrn_reflns_av_sigmaI/netI    0.0487
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            5187
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    0.299
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.429
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
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_refine_diff_density_min         -0.308
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    refall
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_refine_ls_number_reflns         2903
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_refine_ls_R_factor_all          0.0832
_refine_ls_R_factor_gt           0.0552
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0628P)^2^+0.4171P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1306
_refine_ls_wR_factor_ref         0.1550
_reflns_number_gt                2098
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_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            de5027.cif
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2100614