Four Zinc(II) Helical Coordination Polymers and 78-Membered Six-Node Zinc Metallacycle Assembled from Diastereopure N,N'-Bis(acetylacetone)cyclohexanediimine
Bi-Xue Zhu; Qi-Long Zhang; Yun-Qian Zhang; Tao Zhu; Jack K. Clegg; Leonard F. Lindoy; Gang Wei; Inorganic Chemistry 47 (2008) 10053–10061; doi:10.1021/ic801329g

data_4306505
_publ_section_title
;
Four Zinc(II) Helical Coordination Polymers and 78-Membered Six-Node Zinc
Metallacycle Assembled from
Diastereopure N,N'-Bis(acetylacetone)cyclohexanediimine
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              10053
_journal_page_last               10061
_journal_paper_doi               10.1021/ic801329g
_journal_volume                  47
_journal_year                    2008
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C16 H26 Cl2 N2 O2 Zn, H2 O'
_chemical_formula_sum            'C16 H28 Cl2 N2 O3 Zn'
_chemical_formula_weight         432.67
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.904(4)
_cell_length_b                   13.909(6)
_cell_length_c                   17.082(8)
_cell_measurement_temperature    293(2)
_cell_volume                     2115.5(16)
_computing_cell_refinement       'SAINT (Bruker-Nonius, 2003)'
_computing_data_collection       'APEX (Bruker-Nonius, 2003)'
_computing_data_reduction
'SAINT (Bruker-Nonius, 2003), XPREP (Bruker-Nonius, 2003)'
_computing_molecular_graphics
;ORTEP-3 (Farrugia, 1997)
WINGX-32 (Farrugia, 1999) 
;
_computing_publication_material  'enCIFer 1.1 (CCDC, 2005)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker CCD Area Detector'
_diffrn_measurement_method       '\f and \w scan'
_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  0.0556
_diffrn_reflns_av_sigmaI/netI    0.0456
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            24810
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.89
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.428
_exptl_absorpt_correction_T_max  0.8361
_exptl_absorpt_correction_T_min  0.7347
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.610
_refine_diff_density_min         -0.557
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         4113
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0857
_refine_ls_R_factor_gt           0.0541
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0928P)^2^+0.0605P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1504
_refine_ls_wR_factor_ref         0.1648
_reflns_number_gt                2849
_reflns_number_total             4113
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic801329g_si_001.cif
_cod_data_source_block           p
_cod_database_code               4306505