Structural Tungsten-Imido Chemistry: The Gas-Phase Structure of W(NBut)2(NHBut)2 and the Solid-State Structures of Novel Heterobimetallic W/N/M (M = Rh, Pd, Zn) Species
Hamid Choujaa; Samuel D. Cosham; Andrew L. Johnson; Graeme R. Kafka; Mary F. Mahon; Sarah L. Masters; Kieran C. Molloy; David W. H. Rankin; Heather E. Robertson; Derek A. Wann; Inorganic Chemistry 48 (2009) 2289–2299; doi:10.1021/ic8021134

data_4301610
_publ_section_title
;
Structural Tungsten-Imido Chemistry: The Gas-Phase Structure of
W(NBut)2(NHBut)2 and the Solid-State Structures of Novel Heterobimetallic
W/N/M (M = Rh, Pd, Zn) Species
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2289
_journal_page_last               2299
_journal_paper_doi               10.1021/ic8021134
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C16 H38 N4 W'
_chemical_formula_weight         470.35
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_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                   12.7590(3)
_cell_length_b                   9.3070(2)
_cell_length_c                   18.2440(2)
_cell_measurement_reflns_used    52600
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      2.910
_cell_volume                     2166.44(7)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'Denzo & Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEX (P.McArdle, 1995)'
_computing_publication_material  'SHELXL-97/2 (Sheldrick,1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  '95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       CCD
_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  0.0780
_diffrn_reflns_av_sigmaI/netI    0.0273
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            43342
_diffrn_reflns_theta_full        30.04
_diffrn_reflns_theta_max         30.04
_diffrn_reflns_theta_min         4.38
_exptl_absorpt_coefficient_mu    5.333
_exptl_absorpt_correction_T_max  0.70
_exptl_absorpt_correction_T_min  0.26
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.442
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.825
_refine_diff_density_min         -1.662
_refine_diff_density_rms         0.143
_refine_ls_extinction_coef       0.0038(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     170
_refine_ls_number_reflns         3155
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0551
_refine_ls_R_factor_gt           0.0304
_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^)+(0.0378P)^2^+3.4211P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0708
_refine_ls_wR_factor_ref         0.0820
_reflns_number_gt                1974
_reflns_number_total             3155
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic8021134_si_002_1.cif
_cod_data_source_block           k04kcm6
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-Scan' changed
to 'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4301610