One-step synthesis of Mo(0) and W(0) bis(dinitrogen) complexes with the linear tetraphosphine ligand prP4: stereoselective formation of cis-[M(N2)2(rac-prP4)] and trans-[M(N2)2(meso-prP4)]; M = Mo, W.
Römer, René; Gradert, Christian; Bannwarth, Alexander; Peters, Gerhard; Näther, Christian; Tuczek, Felix; Dalton transactions (Cambridge, England : 2003) 40 (2011) 3229–3236; doi:10.1039/c0dt01646b

data_7015472
_publ_section_title
;
 One-step synthesis of Mo(0) and W(0) bis(dinitrogen) complexes with
 the linear tetraphosphine ligand prP4: stereoselective formation of
 cis-[M(N2)2(rac-prP4)] and trans-[M(N2)2(meso-prP4)]; M = Mo, W.
;
_journal_issue                   13
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3229
_journal_page_last               3236
_journal_paper_doi               10.1039/c0dt01646b
_journal_volume                  40
_journal_year                    2011
_chemical_formula_sum            'C30 H20 Br2 Cu N4 O4 S2'
_chemical_formula_weight         787.98
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 104.05(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.027(3)
_cell_length_b                   9.5242(19)
_cell_length_c                   18.442(4)
_cell_measurement_reflns_used    3280
_cell_measurement_temperature    173(1)
_cell_measurement_theta_max      21.01
_cell_measurement_theta_min      2.47
_cell_volume                     2901.2(11)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(1)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker X8 APEX II'
_diffrn_measurement_method       'area detector'
_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  0.071
_diffrn_reflns_av_sigmaI/netI    0.1424
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            6289
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.46
_exptl_absorpt_coefficient_mu    3.696
_exptl_absorpt_correction_T_max  0.691
_exptl_absorpt_correction_T_min  0.445
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.804
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chip
_exptl_crystal_F_000             1564
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.922
_refine_diff_density_min         -0.582
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.927
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     394
_refine_ls_number_reflns         6289
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.927
_refine_ls_R_factor_all          0.1035
_refine_ls_R_factor_gt           0.0497
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0515P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1119
_refine_ls_wR_factor_ref         0.1182
_reflns_number_gt                3216
_reflns_number_total             6289
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt01646b.txt
_cod_data_source_block           twin
_cod_original_cell_volume        2901.4(10)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7015472