A trimetal chain cocooned by two heptadentate polypyridylamide ligands.
Cotton, F. Albert; Chao, Hui; Murillo, Carlos A.; Wang, Qingsheng; Dalton transactions (Cambridge, England : 2003)  (2006) 5416–5422; doi:10.1039/b612076h

data_7007870
_publ_section_title
;
 A trimetal chain cocooned by two heptadentate polypyridylamide
 ligands.
;
_journal_issue                   45
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5416
_journal_page_last               5422
_journal_paper_doi               10.1039/b612076h
_journal_year                    2006
_chemical_formula_moiety         C27H25N9
_chemical_formula_sum            'C27 H25 N9'
_chemical_formula_weight         475.56
_chemical_name_common            H2mpeptea
_space_group_IT_number           43
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'F 2 -2d'
_symmetry_space_group_name_H-M   'F d d 2'
_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            8
_cell_length_a                   17.578(3)
_cell_length_b                   25.708(5)
_cell_length_c                   10.673(2)
_cell_measurement_reflns_used    2708
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      27.53
_cell_measurement_theta_min      2.37
_cell_volume                     4823.1(15)
_computing_cell_refinement       SAINT
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    XP
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'BRUKER SMART 1000'
_diffrn_measurement_method       \w-scans
_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  0.0351
_diffrn_reflns_av_sigmaI/netI    0.0377
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            7380
_diffrn_reflns_theta_full        27.53
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         2.37
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9835
_exptl_absorpt_correction_T_min  0.9795
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2000
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   3(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         2708
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0529
_refine_ls_R_factor_gt           0.0435
_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^)+(0.0623P)^2^+3.2624P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1097
_refine_ls_wR_factor_ref         0.1168
_reflns_number_gt                2327
_reflns_number_total             2708
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b612076h.txt
_cod_data_source_block           cif5
_cod_original_cell_volume        4823.1(16)
_cod_original_sg_symbol_H-M      Fdd2
_cod_database_code               7007870