Synthesis and structures of helical and meso-helical coordination polymers directed by the conformation restriction of flexible/angular pyridine-containing ligands
Wang, Xiu-Jian; Huang, Ting-Hong; Tang, Lin-Hua; Cen, Zhong-Min; Ni, Qing-Ling; Gui, Liu-Cheng; Jiang, Xuan-Feng; Liu, Hong-Ke; CrystEngComm 12 (2010) 4356–; doi:10.1039/c0ce00110d

data_7212791
_publ_section_title
;
 Synthesis and structures of helical and meso-helical coordination
 polymers directed by the conformation restriction of flexible/angular
 pyridine-containing ligands
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              4356
_journal_paper_doi               10.1039/c0ce00110d
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C38 H34 N4 Ni O10, 4(H2 O)'
_chemical_formula_sum            'C38 H42 N4 Ni O14'
_chemical_formula_weight         837.47
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 97.326(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.693(3)
_cell_length_b                   10.1161(19)
_cell_length_c                   20.355(4)
_cell_measurement_temperature    173(2)
_cell_volume                     3817.7(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_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  0.0331
_diffrn_reflns_av_sigmaI/netI    0.0509
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            9225
_diffrn_reflns_theta_full        27.05
_diffrn_reflns_theta_max         27.05
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    0.583
_exptl_absorpt_correction_T_max  0.9714
_exptl_absorpt_correction_T_min  0.7793
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.457
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1752
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.614
_refine_diff_density_min         -0.756
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         4117
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0828
_refine_ls_R_factor_gt           0.0556
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0920P)^2^+6.2994P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1492
_refine_ls_wR_factor_ref         0.1681
_reflns_number_gt                2987
_reflns_number_total             4117
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ce00110d.txt
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_original_formula_sum        'C38 H42 N4 Ni O14 '
_cod_database_code               7212791