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###                                                                        ###
###        Electronic paper (Acta Crystallographica Section E)             ###
###                                                                        ###
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#                                                                            #
# This CIF contains the data in a paper accepted for publication in Acta     #
# Crystallographica Section E. It conforms to the requirements of Notes      #
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# of the IUCr Commission on Journals.                                        #
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# are given in the paper "The Crystallographic Information File (CIF):       #
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# Allen and I. D. Brown [Acta Cryst. (1991), A47, 655-685].                  #
#                                                                            #
# The current version of the core CIF dictionary is obtainable from          #
# ftp://ftp.iucr.org/pub/cif_core.dic. The current version number is 2.4.    #
#                                                                            #
# Software is freely available for graphical display of the structure(s) in  #
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data_I
_audit_creation_method     SHELXL-97
_chemical_name_systematic
;
Poly[bis[8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydropyrido[2,3-
d]pyrimidine-6-carboxylato]cadmium(II)]
;
_chemical_name_common     ?
_chemical_formula_moiety     'C28 H32 Cd N10 O6'
_chemical_formula_sum     'C28 H32 Cd N10 O6'
_chemical_formula_iupac     '[Cd (C14 H16 N5 O3)2]'
_chemical_formula_weight     717.04
_chemical_melting_point     ?
_symmetry_cell_setting     monoclinic
_symmetry_space_group_name_H-M     'C 2/c'
_symmetry_space_group_name_Hall     '-C 2yc'
loop_
    _symmetry_equiv_pos_as_xyz
    'x, y, z'
    '-x, y, -z+1/2'
    'x+1/2, y+1/2, z'
    '-x+1/2, y+1/2, -z+1/2'
    '-x, -y, -z'
    'x, -y, z-1/2'
    '-x+1/2, -y+1/2, -z'
    'x+1/2, -y+1/2, z-1/2'
_cell_length_a     23.565(3)
_cell_length_b     7.4989(10)
_cell_length_c     18.719(3)
_cell_angle_alpha     90.00
_cell_angle_beta     124.133(2)
_cell_angle_gamma     90.00
_cell_volume     2738.0(6)
_cell_formula_units_Z     4
_cell_measurement_reflns_used     2029
_cell_measurement_theta_min     2.63
_cell_measurement_theta_max     25.22
_cell_measurement_temperature     295(2)
_exptl_crystal_description     prism
_exptl_crystal_colour     colorless
_exptl_crystal_size_max     0.26
_exptl_crystal_size_mid     0.21
_exptl_crystal_size_min     0.16
_exptl_crystal_density_diffrn     1.739
_exptl_crystal_density_meas     ?
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000     1464
_exptl_absorpt_coefficient_mu     0.864
_exptl_absorpt_correction_type     multi-scan
_exptl_absorpt_process_details     '(SADABS; Bruker, 2001)'
_exptl_absorpt_correction_T_min     0.801
_exptl_absorpt_correction_T_max     0.870
_exptl_special_details
;
;
_diffrn_ambient_temperature     295(2)
_diffrn_radiation_type     MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_source     'fine-focus sealed tube'
_diffrn_radiation_monochromator     graphite
_diffrn_measurement_device_type     'Bruker SMART CCD'
_diffrn_measurement_method     ω
_diffrn_detector_area_resol_mean     ?
_diffrn_reflns_number     9547
_diffrn_reflns_av_R_equivalents     0.0419
_diffrn_reflns_av_sigmaI/netI     0.0522
_diffrn_reflns_theta_min     2.63
_diffrn_reflns_theta_max     28.13
_diffrn_reflns_theta_full     28.13
_diffrn_measured_fraction_theta_max     0.996
_diffrn_measured_fraction_theta_full     0.996
_diffrn_reflns_limit_h_min     -31
_diffrn_reflns_limit_h_max     31
_diffrn_reflns_limit_k_min     -9
_diffrn_reflns_limit_k_max     9
_diffrn_reflns_limit_l_min     -24
_diffrn_reflns_limit_l_max     17
_diffrn_standards_number     ?
_diffrn_standards_interval_count     ?
_diffrn_standards_interval_time     ?
_diffrn_standards_decay_%     ?
_refine_special_details
;
Refinement of F² against ALL reflections. The weighted R-factor
wR and goodness of fit S are based on F², conventional
R-factors R are based on F, with F set to zero for
negative F². The threshold expression of F² >
σ(F²) is used only for calculating R-factors(gt) etc.
and is not relevant to the choice of reflections for refinement.
R-factors based on F² are statistically about twice as large
as those based on F, and R- factors based on ALL data will be
even larger.
;
_reflns_number_total     3341
_reflns_number_gt     2733
_reflns_threshold_expression     I>2σ(I)
_refine_ls_structure_factor_coef     Fsqd
_refine_ls_matrix_type     full
_refine_ls_R_factor_all     0.0518
_refine_ls_R_factor_gt     0.0379
_refine_ls_wR_factor_gt     0.0765
_refine_ls_wR_factor_ref     0.0824
_refine_ls_goodness_of_fit_ref     1.034
_refine_ls_restrained_S_all     1.034
_refine_ls_number_reflns     3341
_refine_ls_number_parameters     209
_refine_ls_number_restraints     1
_refine_ls_hydrogen_treatment     mixed
_refine_ls_weighting_scheme     calc
_refine_ls_weighting_details
         'calc w=1/[σ²(Fo²)+(0.0343P)²+1.6146P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_hydrogens     geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary     difmap
_refine_ls_shift/su_max     0.000
_refine_ls_shift/su_mean     0.000
_refine_diff_density_max     0.552
_refine_diff_density_min     -0.522
_refine_ls_extinction_method     none
_refine_ls_extinction_coef     ?
loop_
    _atom_type_symbol
    _atom_type_description
    _atom_type_scat_dispersion_real
    _atom_type_scat_dispersion_imag
    _atom_type_scat_source
    'C' 'C' 0.0033 0.0016
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'H' 'H' 0.0000 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'N' 'N' 0.0061 0.0033
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'O' 'O' 0.0106 0.0060
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'Cd' 'Cd' -0.8075 1.2024
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
_computing_data_collection     'APEX2 (Bruker, 2004)'
_computing_cell_refinement     'SAINT-Plus (Bruker, 2001)'
_computing_data_reduction     'SAINT-Plus (Bruker, 2001)'
_computing_structure_solution     'SHELXS97 (Sheldrick, 2008)'
_computing_structure_refinement     'SHELXL97 (Sheldrick, 2008)'
_computing_molecular_graphics     'SHELXTL (Sheldrick, 2008)'
_computing_publication_material     'SHELXTL (Sheldrick, 2008)'
loop_
    _atom_site_type_symbol
    _atom_site_label
    _atom_site_fract_x
    _atom_site_fract_y
    _atom_site_fract_z
    _atom_site_U_iso_or_equiv
    _atom_site_adp_type
    _atom_site_calc_flag
    _atom_site_refinement_flags
    _atom_site_occupancy
    _atom_site_disorder_assembly
    _atom_site_disorder_group
    Cd Cd1 0.0000 0.98587(4) 0.2500 0.02310(10) Uani d S 1 . .
    O O1 0.08374(10) 0.5183(3) 0.41826(15) 0.0332(5) Uani d . 1 . .
    O O2 0.04106(10) 0.7822(3) 0.35767(15) 0.0344(5) Uani d . 1 . .
    O O3 0.11120(10) 0.9456(3) 0.28957(14) 0.0317(5) Uani d . 1 . .
    N N1 0.26146(11) 0.5764(3) 0.43559(15) 0.0219(5) Uani d . 1 . .
    N N2 0.33353(11) 0.7134(3) 0.40468(15) 0.0216(5) Uani d . 1 . .
    N N3 0.29069(12) 0.9516(3) 0.29966(17) 0.0262(5) Uani d . 1 . .
    N N4 0.40508(11) 0.8712(3) 0.38073(16) 0.0235(5) Uani d . 1 . .
    N N5 0.49005(11) 0.7117(3) 0.33262(16) 0.0220(5) Uani d D 1 . .
    C C1 0.08550(13) 0.6605(4) 0.38550(18) 0.0222(6) Uani d . 1 . .
    C C2 0.14781(13) 0.6884(3) 0.38139(18) 0.0201(6) Uani d . 1 . .
    C C3 0.15495(13) 0.8283(3) 0.33412(18) 0.0204(6) Uani d . 1 . .
    C C4 0.21915(13) 0.8271(3) 0.34077(18) 0.0192(6) Uani d . 1 . .
    C C5 0.23209(14) 0.9413(4) 0.29215(19) 0.0246(6) Uani d . 1 . .
    H H5A 0.1966 1.0149 0.2518 0.030 Uiso calc R 1 . .
    C C6 0.34189(14) 0.8435(3) 0.36193(18) 0.0208(6) Uani d . 1 . .
    C C7 0.27239(13) 0.7084(3) 0.39339(18) 0.0197(6) Uani d . 1 . .
    C C8 0.20076(14) 0.5712(4) 0.42765(19) 0.0227(6) Uani d . 1 . .
    H H8A 0.1945 0.4798 0.4562 0.027 Uiso calc R 1 . .
    C C9 0.31463(14) 0.4398(4) 0.48763(19) 0.0266(6) Uani d . 1 . .
    H H9A 0.3068 0.3881 0.5289 0.032 Uiso calc R 1 . .
    H H9B 0.3594 0.4961 0.5197 0.032 Uiso calc R 1 . .
    C C10 0.3138(2) 0.2948(4) 0.4318(2) 0.0468(9) Uani d . 1 . .
    H H10A 0.2691 0.2417 0.3985 0.070 Uiso calc R 1 . .
    H H10B 0.3471 0.2055 0.4676 0.070 Uiso calc R 1 . .
    H H10C 0.3248 0.3444 0.3937 0.070 Uiso calc R 1 . .
    C C11 0.46394(14) 0.7639(4) 0.4430(2) 0.0263(6) Uani d . 1 . .
    H H11A 0.4543 0.7030 0.4808 0.032 Uiso calc R 1 . .
    H H11B 0.5034 0.8405 0.4781 0.032 Uiso calc R 1 . .
    C C12 0.47967(14) 0.6281(4) 0.39627(19) 0.0248(6) Uani d . 1 . .
    H H12A 0.5207 0.5626 0.4383 0.030 Uiso calc R 1 . .
    H H12B 0.4421 0.5436 0.3667 0.030 Uiso calc R 1 . .
    C C13 0.41713(15) 0.9697(4) 0.3225(2) 0.0257(6) Uani d . 1 . .
    H H13A 0.4554 1.0511 0.3553 0.031 Uiso calc R 1 . .
    H H13B 0.3768 1.0385 0.2815 0.031 Uiso calc R 1 . .
    C C14 0.43293(15) 0.8350(4) 0.2749(2) 0.0270(7) Uani d . 1 . .
    H H14A 0.3920 0.7653 0.2366 0.032 Uiso calc R 1 . .
    H H14B 0.4443 0.8992 0.2395 0.032 Uiso calc R 1 . .
    H H5N 0.5260(10) 0.785(3) 0.3622(16) 0.021(8) Uiso d D 1 . .
_geom_special_details
;
All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell e.s.d.'s are taken
into account individually in the estimation of e.s.d.'s in distances, angles
and torsion angles; correlations between e.s.d.'s in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s.
planes.
;
loop_
    _geom_bond_atom_site_label_1
    _geom_bond_atom_site_label_2
    _geom_bond_site_symmetry_2
    _geom_bond_distance
    _geom_bond_publ_flag
    Cd1 O2 2 2.268(2) ?
    Cd1 O2 . 2.268(2) y
    Cd1 O3 2 2.3084(19) ?
    Cd1 O3 . 2.3084(19) y
    Cd1 N5 4 2.392(2) y
    Cd1 N5 3_455 2.392(2) ?
    O1 C1 . 1.243(3) ?
    O2 C1 . 1.260(3) ?
    O3 C3 . 1.252(3) ?
    N1 C8 . 1.353(3) ?
    N1 C7 . 1.378(3) ?
    N1 C9 . 1.483(3) ?
    N2 C7 . 1.334(3) ?
    N2 C6 . 1.344(3) ?
    N3 C5 . 1.309(3) ?
    N3 C6 . 1.376(3) ?
    N4 C6 . 1.340(3) ?
    N4 C11 . 1.454(4) ?
    N4 C13 . 1.470(3) ?
    N5 C12 . 1.483(3) ?
    N5 C14 . 1.484(3) ?
    N5 Cd1 3_545 2.392(2) ?
    N5 H5N . 0.893(10) ?
    C1 C2 . 1.527(3) ?
    C2 C8 . 1.366(4) ?
    C2 C3 . 1.442(4) ?
    C3 C4 . 1.447(3) ?
    C4 C7 . 1.396(4) ?
    C4 C5 . 1.402(4) ?
    C5 H5A . 0.9300 ?
    C8 H8A . 0.9300 ?
    C9 C10 . 1.501(4) ?
    C9 H9A . 0.9700 ?
    C9 H9B . 0.9700 ?
    C10 H10A . 0.9600 ?
    C10 H10B . 0.9600 ?
    C10 H10C . 0.9600 ?
    C11 C12 . 1.518(4) ?
    C11 H11A . 0.9700 ?
    C11 H11B . 0.9700 ?
    C12 H12A . 0.9700 ?
    C12 H12B . 0.9700 ?
    C13 C14 . 1.524(4) ?
    C13 H13A . 0.9700 ?
    C13 H13B . 0.9700 ?
    C14 H14A . 0.9700 ?
    C14 H14B . 0.9700 ?
loop_
    _geom_angle_atom_site_label_1
    _geom_angle_atom_site_label_2
    _geom_angle_atom_site_label_3
    _geom_angle_site_symmetry_1
    _geom_angle_site_symmetry_3
    _geom_angle
    _geom_angle_publ_flag
    O2 Cd1 O2 2 . 95.31(12) ?
    O2 Cd1 O3 2 2 77.61(7) ?
    O2 Cd1 O3 . 2 92.21(7) ?
    O2 Cd1 O3 2 . 92.21(7) ?
    O2 Cd1 O3 . . 77.61(7) ?
    O3 Cd1 O3 2 . 164.98(10) ?
    O2 Cd1 N5 2 4 92.86(8) ?
    O2 Cd1 N5 . 4 154.65(8) ?
    O3 Cd1 N5 2 4 112.99(8) ?
    O3 Cd1 N5 . 4 78.14(7) ?
    O2 Cd1 N5 2 3_455 154.65(8) ?
    O2 Cd1 N5 . 3_455 92.86(8) ?
    O3 Cd1 N5 2 3_455 78.14(7) ?
    O3 Cd1 N5 . 3_455 112.99(8) ?
    N5 Cd1 N5 4 3_455 89.87(11) ?
    C1 O2 Cd1 . . 134.12(18) ?
    C3 O3 Cd1 . . 131.89(17) ?
    C8 N1 C7 . . 119.0(2) ?
    C8 N1 C9 . . 120.2(2) ?
    C7 N1 C9 . . 120.8(2) ?
    C7 N2 C6 . . 115.6(2) ?
    C5 N3 C6 . . 115.3(2) ?
    C6 N4 C11 . . 123.0(2) ?
    C6 N4 C13 . . 122.1(2) ?
    C11 N4 C13 . . 112.2(2) ?
    C12 N5 C14 . . 110.9(2) ?
    C12 N5 Cd1 . 3_545 109.91(16) ?
    C14 N5 Cd1 . 3_545 110.40(17) ?
    C12 N5 H5N . . 106.7(19) ?
    C14 N5 H5N . . 103.1(19) ?
    Cd1 N5 H5N 3_545 . 115.7(18) ?
    O1 C1 O2 . . 125.1(2) ?
    O1 C1 C2 . . 116.2(2) ?
    O2 C1 C2 . . 118.7(2) ?
    C8 C2 C3 . . 118.5(2) ?
    C8 C2 C1 . . 116.2(2) ?
    C3 C2 C1 . . 125.2(2) ?
    O3 C3 C2 . . 125.7(2) ?
    O3 C3 C4 . . 119.5(2) ?
    C2 C3 C4 . . 114.8(2) ?
    C7 C4 C5 . . 114.2(2) ?
    C7 C4 C3 . . 123.2(2) ?
    C5 C4 C3 . . 122.6(2) ?
    N3 C5 C4 . . 124.5(3) ?
    N3 C5 H5A . . 117.7 ?
    C4 C5 H5A . . 117.7 ?
    N4 C6 N2 . . 117.9(2) ?
    N4 C6 N3 . . 116.6(2) ?
    N2 C6 N3 . . 125.4(2) ?
    N2 C7 N1 . . 117.5(2) ?
    N2 C7 C4 . . 123.8(2) ?
    N1 C7 C4 . . 118.6(2) ?
    N1 C8 C2 . . 125.8(3) ?
    N1 C8 H8A . . 117.1 ?
    C2 C8 H8A . . 117.1 ?
    N1 C9 C10 . . 111.6(3) ?
    N1 C9 H9A . . 109.3 ?
    C10 C9 H9A . . 109.3 ?
    N1 C9 H9B . . 109.3 ?
    C10 C9 H9B . . 109.3 ?
    H9A C9 H9B . . 108.0 ?
    C9 C10 H10A . . 109.5 ?
    C9 C10 H10B . . 109.5 ?
    H10A C10 H10B . . 109.5 ?
    C9 C10 H10C . . 109.5 ?
    H10A C10 H10C . . 109.5 ?
    H10B C10 H10C . . 109.5 ?
    N4 C11 C12 . . 110.0(2) ?
    N4 C11 H11A . . 109.7 ?
    C12 C11 H11A . . 109.7 ?
    N4 C11 H11B . . 109.7 ?
    C12 C11 H11B . . 109.7 ?
    H11A C11 H11B . . 108.2 ?
    N5 C12 C11 . . 112.5(2) ?
    N5 C12 H12A . . 109.1 ?
    C11 C12 H12A . . 109.1 ?
    N5 C12 H12B . . 109.1 ?
    C11 C12 H12B . . 109.1 ?
    H12A C12 H12B . . 107.8 ?
    N4 C13 C14 . . 108.2(2) ?
    N4 C13 H13A . . 110.1 ?
    C14 C13 H13A . . 110.1 ?
    N4 C13 H13B . . 110.1 ?
    C14 C13 H13B . . 110.1 ?
    H13A C13 H13B . . 108.4 ?
    N5 C14 C13 . . 114.0(2) ?
    N5 C14 H14A . . 108.7 ?
    C13 C14 H14A . . 108.7 ?
    N5 C14 H14B . . 108.7 ?
    C13 C14 H14B . . 108.7 ?
    H14A C14 H14B . . 107.6 ?
loop_
    _geom_torsion_atom_site_label_1
    _geom_torsion_atom_site_label_2
    _geom_torsion_atom_site_label_3
    _geom_torsion_atom_site_label_4
    _geom_torsion_site_symmetry_1
    _geom_torsion_site_symmetry_2
    _geom_torsion_site_symmetry_3
    _geom_torsion_site_symmetry_4
    _geom_torsion
    _geom_torsion_publ_flag
    O2 Cd1 O2 C1 2 . . . 61.3(3) ?
    O3 Cd1 O2 C1 2 . . . 139.0(3) ?
    O3 Cd1 O2 C1 . . . . -29.8(3) ?
    N5 Cd1 O2 C1 4 . . . -47.0(4) ?
    N5 Cd1 O2 C1 3_455 . . . -142.7(3) ?
    O2 Cd1 O3 C3 2 . . . -80.2(3) ?
    O2 Cd1 O3 C3 . . . . 14.7(3) ?
    O3 Cd1 O3 C3 2 . . . -33.5(3) ?
    N5 Cd1 O3 C3 4 . . . -172.7(3) ?
    N5 Cd1 O3 C3 3_455 . . . 102.6(3) ?
    Cd1 O2 C1 O1 . . . . -148.5(2) ?
    Cd1 O2 C1 C2 . . . . 33.1(4) ?
    O1 C1 C2 C8 . . . . -11.5(4) ?
    O2 C1 C2 C8 . . . . 167.1(3) ?
    O1 C1 C2 C3 . . . . 169.4(3) ?
    O2 C1 C2 C3 . . . . -12.0(4) ?
    Cd1 O3 C3 C2 . . . . -6.4(4) ?
    Cd1 O3 C3 C4 . . . . 173.52(18) ?
    C8 C2 C3 O3 . . . . -179.5(3) ?
    C1 C2 C3 O3 . . . . -0.4(5) ?
    C8 C2 C3 C4 . . . . 0.6(4) ?
    C1 C2 C3 C4 . . . . 179.6(2) ?
    O3 C3 C4 C7 . . . . 175.7(3) ?
    C2 C3 C4 C7 . . . . -4.3(4) ?
    O3 C3 C4 C5 . . . . -6.7(4) ?
    C2 C3 C4 C5 . . . . 173.2(3) ?
    C6 N3 C5 C4 . . . . -1.7(4) ?
    C7 C4 C5 N3 . . . . -6.3(4) ?
    C3 C4 C5 N3 . . . . 176.0(3) ?
    C11 N4 C6 N2 . . . . 1.9(4) ?
    C13 N4 C6 N2 . . . . 161.7(2) ?
    C11 N4 C6 N3 . . . . -177.9(3) ?
    C13 N4 C6 N3 . . . . -18.1(4) ?
    C7 N2 C6 N4 . . . . 170.3(2) ?
    C7 N2 C6 N3 . . . . -9.9(4) ?
    C5 N3 C6 N4 . . . . -169.7(3) ?
    C5 N3 C6 N2 . . . . 10.6(4) ?
    C6 N2 C7 N1 . . . . 179.6(2) ?
    C6 N2 C7 C4 . . . . 0.4(4) ?
    C8 N1 C7 N2 . . . . 177.9(2) ?
    C9 N1 C7 N2 . . . . -3.2(4) ?
    C8 N1 C7 C4 . . . . -2.9(4) ?
    C9 N1 C7 C4 . . . . 176.0(2) ?
    C5 C4 C7 N2 . . . . 7.0(4) ?
    C3 C4 C7 N2 . . . . -175.3(3) ?
    C5 C4 C7 N1 . . . . -172.2(2) ?
    C3 C4 C7 N1 . . . . 5.5(4) ?
    C7 N1 C8 C2 . . . . -0.8(4) ?
    C9 N1 C8 C2 . . . . -179.7(3) ?
    C3 C2 C8 N1 . . . . 2.0(4) ?
    C1 C2 C8 N1 . . . . -177.2(3) ?
    C8 N1 C9 C10 . . . . 98.4(3) ?
    C7 N1 C9 C10 . . . . -80.4(3) ?
    C6 N4 C11 C12 . . . . 101.2(3) ?
    C13 N4 C11 C12 . . . . -60.4(3) ?
    C14 N5 C12 C11 . . . . -50.3(3) ?
    Cd1 N5 C12 C11 3_545 . . . -172.71(18) ?
    N4 C11 C12 N5 . . . . 55.3(3) ?
    C6 N4 C13 C14 . . . . -102.7(3) ?
    C11 N4 C13 C14 . . . . 59.0(3) ?
    C12 N5 C14 C13 . . . . 50.8(3) ?
    Cd1 N5 C14 C13 3_545 . . . 172.90(17) ?
    N4 C13 C14 N5 . . . . -54.3(3) ?
loop_
    _geom_hbond_atom_site_label_D
    _geom_hbond_atom_site_label_H
    _geom_hbond_atom_site_label_A
    _geom_hbond_site_symmetry_A
    _geom_hbond_distance_DH
    _geom_hbond_distance_HA
    _geom_hbond_distance_DA
    _geom_hbond_angle_DHA
    N5 H5N O1 3 0.893(10) 2.101(13) 2.959(3) 161(3)
data_global
_journal_date_recd_electronic     2010-10-20
_journal_date_accepted     2010-10-23
_journal_name_full     'Acta Crystallographica, Section E'
_journal_year     2010
_journal_volume     66
_journal_issue     11
_journal_page_first     m1492
_journal_page_last     m1492
_journal_paper_category     QM
_journal_coeditor_code     HB5694
_publ_contact_author_name     'Jing Huang'
_publ_contact_author_address
;
School of Pharmaceutical Science,
Harbin Medical University,
Harbin, 150086
People's Republic of China
;
_publ_contact_author_email     hj_hmd@sina.com
_publ_contact_author_fax     '086 451 86699347'
_publ_contact_author_phone     '086 451 86699347'
_publ_section_title
;\
Poly[bis[8-ethyl-5-oxo-2-(piperazin-1-yl)-5,8-dihydropyrido[2,3-d]\
pyrimidine-6-carboxylato]cadmium(II)]
;
loop_
    _publ_author_name
    _publ_author_address
    'Jun Gao'
;
School of Physical Education and Sports Science
Harbin Normal University
Harbin 150025
People's Republic of China
;
    'Jing Gao'
;
Department of Pharmacy,
Mudanjiang Medical University,
Mudanjiang 157011
People's Republic of China
;
'Bo Pei'
;
School of Chemistry and Chemical Engineering
Harbin Normal University
Harbin 150025
People's Republic of China
;
'Jing Huang'
;
School of Pharmaceutical Science
Harbin Medical University
Harbin 150086 
People's Republic of China
;
