Tungsten Oxo Alkylidene Complexes as Initiators for the Stereoregular Polymerization of 2,3-Dicarbomethoxynorbornadiene
Forrest, William P.; Axtell, Jonathan C.; Schrock, Richard R.; Organometallics 33 (2014) 2313–; doi:10.1021/om5002364

data_4083131
_publ_section_title
;
 Tungsten Oxo Alkylidene Complexes as Initiators for the Stereoregular
 Polymerization of 2,3-Dicarbomethoxynorbornadiene
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2313
_journal_paper_doi               10.1021/om5002364
_journal_volume                  33
_journal_year                    2014
_chemical_formula_sum            'C83.17 H71.66 O3 W'
_chemical_formula_weight         1302.95
_chemical_name_systematic
; 
 ? 
;
_space_group_crystal_system      triclinic
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_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
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_cell_angle_beta                 72.787(2)
_cell_angle_gamma                72.405(2)
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_cell_length_a                   13.0951(13)
_cell_length_b                   13.5357(13)
_cell_length_c                   20.0552(19)
_cell_measurement_reflns_used    9758
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.88
_cell_measurement_theta_min      2.29
_cell_volume                     3224.6(5)
_computing_cell_refinement       'SAINT 7.46A (Bruker-AXS, 2011)'
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_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Smart APEX CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_point_group_measured_fraction_full 1.000
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_diffrn_source                   'fine-focus sealed tube, graphite'
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_exptl_crystal_colour            yellow
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_refine_ls_extinction_method     none
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_refine_ls_number_reflns         18039
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_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0622
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_refine_ls_structure_factor_coef Fsqd
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'w=1/[\s^2^(Fo^2^)+(0.0421P)^2^+3.6201P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_Friedel_coverage         0.000
_reflns_number_gt                14542
_reflns_number_total             18039
_reflns_threshold_expression     'I > 2\s(I)'
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_cod_depositor_comments          'Adding full bibliography for 4083131.cif.'
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_shelx_estimated_absorpt_t_min   0.733
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_shelx_res_checksum              85090
_shelx_hkl_checksum              39886