data_2003793
_journal_name_full   'Acta Crystallographica'
_journal_year        1995
_journal_volume     C51
_journal_page_first     1545
_journal_page_last     1547
_publ_section_title
;
Tris(2,2'-bipyridine)zinc(II) Perchlorate
;
_chemical_formula_moiety     'C30 H24 Cl2 N6 O8 Zn1'
_chemical_formula_sum     'C30 H24 Cl2 N6 O8 Zn1'
_chemical_formula_weight     732.8
_symmetry_cell_setting     monoclinic
loop_
    _symmetry_equiv_pos_as_xyz
    'x,y,z'
    'x,-y,1/2+z'
    '-x,-y,-z'
    '-x,y,1/2-z'
    '1/2+x,1/2+y,z'
    '1/2+x,1/2-y,1/2+z'
    '1/2-x,1/2-y,-z'
    '1/2-x,1/2+y,1/2-z'
_symmetry_space_group_name_H-M     'C 2/c'
_cell_length_a     17.473(3)
_cell_length_b     10.926(2)
_cell_length_c     16.163(3)
_cell_angle_alpha     90.
_cell_angle_beta     91.17(3)
_cell_angle_gamma     90.
_cell_volume     3085(1)
_cell_formula_units_Z     4
_exptl_crystal_density_diffrn     1.578
_exptl_crystal_density_meas     ?
_diffrn_radiation_type     'MoK\a'
_diffrn_radiation_wavelength     0.71073
_cell_measurement_reflns_used     25
_cell_measurement_theta_min     15
_cell_measurement_theta_max     23
_exptl_absorpt_coefficient_mu     1.034
_cell_measurement_temperature     295
_exptl_crystal_description     'polyhedral'
_exptl_crystal_size_max     0.42
_exptl_crystal_size_mid     0.40
_exptl_crystal_size_min     0.36
_exptl_crystal_size_rad     ?
_exptl_crystal_colour     'pink'
_chemical_compound_source     ?
_diffrn_measurement_device     'Siemens R3m/V'
_diffrn_measurement_method     '\w'
_exptl_absorpt_correction_type     'empirical'
_exptl_absorpt_correction_T_min     0.467
_exptl_absorpt_correction_T_max     0.562
_diffrn_reflns_number     3678
_reflns_number_total     3566
_reflns_number_observed     2763
_reflns_observed_criterion     F>=6\s(F)
_diffrn_reflns_av_R_equivalents     0.0212
_diffrn_reflns_theta_max     55
_diffrn_reflns_limit_h_min     0
_diffrn_reflns_limit_h_max     22
_diffrn_reflns_limit_k_min     0
_diffrn_reflns_limit_k_max     14
_diffrn_reflns_limit_l_min     -20
_diffrn_reflns_limit_l_max     20
_diffrn_standards_number     2
_diffrn_standards_interval_count     120
_diffrn_standards_interval_time     ?
_diffrn_standards_decay_%     +-1.5
_refine_ls_structure_factor_coef     F
_refine_ls_R_factor_obs     0.0470
_refine_ls_wR_factor_obs     0.0646
_refine_ls_goodness_of_fit_obs     2.05
_refine_ls_number_reflns     2763
_refine_ls_number_parameters     213
_refine_ls_hydrogen_treatment     'noref'
_refine_ls_weighting_scheme     'w = 1/[\s^2^(F) + 0.0005F^2^]'
_refine_ls_shift/esd_max     0.00
_refine_diff_density_max     0.38
_refine_diff_density_min     -0.60
_refine_ls_extinction_method     'none'
_refine_ls_extinction_coef     ?
_atom_type_scat_source     'IntTabIV'
loop_
    _atom_site_label
    _atom_site_fract_x
    _atom_site_fract_y
    _atom_site_fract_z
    _atom_site_u_iso_or_equiv
    Zn(1) 0 .0273(1) .2500 .041(1)
    N(11) -.0633(1) -.1152(2) .1853(1) .044(1)
    N(12) -.1021(1) .0027(2) .3225(2) .045(1)
    C(10) -.0427(2) -.1699(3) .1149(2) .053(1)
    C(11) -.0825(2) -.2659(3) .0792(2) .060(1)
    C(12) -.1459(2) -.3083(3) .1186(2) .070(1)
    C(13) -.1677(2) -.2550(3) .1917(2) .064(1)
    C(14) -.1253(2) -.1578(3) .2239(2) .045(1)
    C(15) -.1447(2) -.0950(3) .3022(2) .043(1)
    C(16) -.2037(2) -.1337(3) .3523(2) .056(1)
    C(17) -.2188(2) -.0692(3) .4238(2) .062(1)
    C(18) -.1766(2) .0325(3) .4435(2) .059(1)
    C(19) -.1185(2) .0669(3) .3910(2) .055(1)
    N(21) .0422(1) .1800(2) .3196(2) .043(1)
    C(20) .0797(2) .1736(3) .3939(2) .051(1)
    C(21) .0911(2) .2738(3) .4434(2) .056(1)
    C(22) .0655(2) .3862(3) .4156(2) .061(1)
    C(23) .0299(2) .3958(3) .3381(2) .056(1)
    C(24) .0193(2) .2901(2) .2916(2) .041(1)
    Cl(1) .3241(1) -.0087(1) .3642(1) .061(1)
    O(1) .3360(2) -.0728(4) .2919(2) .124(2)
    O(2) .2499(2) .0451(3) .3623(2) .103(1)
    O(3) .3812(2) .0834(4) .3734(3) .133(2)
    O(4) .3315(2) -.0861(5) .4326(2) .151(2)
    H(10) .0000 -.1365 .0855 .080
    H(11) -.0627 -.2955 .0238 .080
    H(12) -.1844 -.3745 .0999 .080
    H(13) -.2151 -.2847 .2233 .080
    H(16) -.2335 -.2045 .3412 .080
    H(17) -.2576 -.0876 .4631 .080
    H(18) -.1887 .0789 .4954 .080
    H(19) -.0861 .1386 .3997 .080
    H(20) .0934 .0862 .4104 .080
    H(21) .1211 .2605 .4946 .080
    H(22) .0645 .4635 .4591 .080
    H(23) -.0034 .4725 .3174 .080