Effect of Protonation and Zn(II) Coordination on the Fluorescence Emission of a Phenanthroline-Containing Macrocycle. An Unusual Case of "Nonemissive" Zn(II) Complex
Carla Bazzicalupi; Andrea Bencini; Antonio Bianchi; Claudia Giorgi; Vieri Fusi; Barbara Valtancoli; M. Alexandra Bernardo; Fernando Pina; Inorganic Chemistry 38 (1999) 3806–3813; doi:10.1021/ic981374k

data_4322200
_publ_section_title
;
 Effect of Protonation and Zn(II) Coordination on the Fluorescence
 Emission of a Phenanthroline-Containing Macrocycle. An Unusual Case of
 "Nonemissive" Zn(II) Complex
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3806
_journal_page_last               3813
_journal_paper_doi               10.1021/ic981374k
_journal_volume                  38
_journal_year                    1999
_chemical_formula_moiety
;
Zn 2+, C18 H21 N5, H2 O, (Cl O4 -)2
;
_chemical_formula_structural
;
(Zn) (C18 H21 N5) (H2 O) (Cl O4)2
;
_chemical_formula_sum            'C18 H23 Cl2 N5 O9 Zn'
_chemical_formula_weight         589.68
_chemical_name_systematic
;
 ?
;
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 114.90(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.194(4)
_cell_length_b                   11.959(4)
_cell_length_c                   15.082(6)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298
_cell_measurement_theta_max      10.5
_cell_measurement_theta_min      8
_cell_volume                     2322.1(14)
_computing_cell_refinement       'ENRAF NONIUS CAD4'
_computing_data_collection       'ENRAF NONIUS CAD4'
_computing_data_reduction        'ENRAF NONIUS CAD4'
_computing_molecular_graphics    'ORTEP (Johson, 1971)'
_computing_publication_material
;
SHELXL-93 (Sheldrick, 1993), PARST93 (Nardelli, 1993)
;
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SIR92 (Altamore,1993)'
_diffrn_ambient_temperature      298
_diffrn_measurement_device       'ENRAF NONIUS CAD4'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0548
_diffrn_reflns_av_sigmaI/netI    0.0831
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4234
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.72
_diffrn_standards_interval_time  60
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    1.348
_exptl_absorpt_correction_type   'refdelf (Walker and Stuart, 1983)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.687
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1208
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.580
_refine_diff_density_min         -0.427
_refine_diff_density_rms         0.096
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.023
_refine_ls_goodness_of_fit_obs   1.119
_refine_ls_hydrogen_treatment    refU
_refine_ls_matrix_type           full
_refine_ls_number_parameters     324
_refine_ls_number_reflns         4064
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_restrained_S_obs      1.119
_refine_ls_R_factor_all          0.1552
_refine_ls_R_factor_obs          0.0836
_refine_ls_shift/esd_max         -0.048
_refine_ls_shift/esd_mean        0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1032P)^2^+8.8527P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.2468
_refine_ls_wR_factor_obs         0.1961
_reflns_number_observed          2250
_reflns_number_total             4065
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ic981374k_2.cif
_cod_data_source_block           '[ZnL(H2O)](ClO4)2'
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1032P)^2^+8.8527P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.1032P)^2^+8.8527P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4322200