Tri(pyridylmethyl)phosphine: The Elusive Congener of TPA Shows Surprisingly Different Coordination Behavior
Christopher J. Whiteoak; James D. Nobbs; Evgeny Kiryushchenkov; Sandro Pagano; Andrew J.P. White; George J.P. Britovsek; Inorganic Chemistry 52 (2013) 7000–7009; doi:10.1021/ic4005196

data_4335183
_publ_section_title
;
 Tri(pyridylmethyl)phosphine: The Elusive Congener of TPA Shows
 Surprisingly Different Coordination Behavior
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7000
_journal_page_last               7009
_journal_paper_doi               10.1021/ic4005196
_journal_volume                  52
_journal_year                    2013
_chemical_formula_moiety         'C36 H36 Fe N6 P2, Br4 Fe, C2 H3 N'
_chemical_formula_sum            'C38 H39 Br4 Fe2 N7 P2'
_chemical_formula_weight         1087.04
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           73
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-I 2b 2c'
_symmetry_space_group_name_H-M   'I b c a'
_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                   19.8229(2)
_cell_length_b                   22.6568(3)
_cell_length_c                   18.5048(2)
_cell_measurement_reflns_used    7085
_cell_measurement_temperature    173
_cell_measurement_theta_max      71.2132
_cell_measurement_theta_min      1.9492
_cell_volume                     8310.94(16)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173
_diffrn_detector_area_resol_mean 8.2556
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'OD Xcalibur PX Ultra'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance Ultra (Cu) x-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0544
_diffrn_reflns_av_sigmaI/netI    0.0447
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            19457
_diffrn_reflns_theta_full        71.33
_diffrn_reflns_theta_max         71.33
_diffrn_reflns_theta_min         3.90
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    11.129
_exptl_absorpt_correction_T_max  0.816
_exptl_absorpt_correction_T_min  0.230
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
; 
CrysAlis RED, Oxford Diffraction Ltd., 
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET) 
(compiled May  8 2007,13:10:02) 
Analytical numeric absorption correction using a multifaceted crystal 
model based on expressions derived by R.C. Clark & J.S. Reid. 
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897) 
;
_exptl_crystal_colour            'Light brown'
_exptl_crystal_density_diffrn    1.738
_exptl_crystal_description       'canoe-shaped needles'
_exptl_crystal_F_000             4304
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.778
_refine_diff_density_min         -0.454
_refine_diff_density_rms         0.095
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.949
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         4013
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      0.955
_refine_ls_R_factor_all          0.0636
_refine_ls_R_factor_gt           0.0384
_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^)+(0.0606P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.1017
_reflns_number_gt                2725
_reflns_number_total             4013
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic4005196_si_002_2.cif
_cod_data_source_block           '[Fe(TPP)2](FeBr4)'
_cod_database_code               4335183