Synthesis and reactivity of electron poor allenes: formation of completely organic frustrated Lewis pairs.
Palomas, David; Holle, Sigrid; Inés, Blanca; Bruns, Hans; Goddard, Richard; Alcarazo, Manuel; Dalton transactions (Cambridge, England : 2003) 41 (2012) 9073–9082; doi:10.1039/c2dt30195d

data_7019699
_publ_section_title
;
 Synthesis and reactivity of electron poor allenes: formation of
 completely organic frustrated Lewis pairs.
;
_journal_issue                   30
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9073
_journal_page_last               9082
_journal_paper_doi               10.1039/c2dt30195d
_journal_volume                  41
_journal_year                    2012
_chemical_compound_source        liquid
_chemical_formula_moiety         'C15 H20 O8'
_chemical_formula_sum            'C15 H20 O8'
_chemical_formula_weight         328.31
_chemical_melting_point          276(2)
_chemical_name_systematic
;
1,1,3,3-tetra(ethoxylcarbonyl)allene
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_code                HOS-HF-344-03
_audit_creation_date             2012-01-18
_cell_angle_alpha                100.459(2)
_cell_angle_beta                 95.176(2)
_cell_angle_gamma                102.972(2)
_cell_formula_units_Z            2
_cell_length_a                   4.7229(2)
_cell_length_b                   9.6401(5)
_cell_length_c                   19.1004(9)
_cell_measurement_reflns_used    5048
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      64.0634
_cell_measurement_theta_min      4.7514
_cell_volume                     825.53(7)
_computing_cell_refinement       'SAINT software (Bruker AXS, 2004)'
_computing_data_collection       'PROTEUM2 (Bruker AXS, 2008)'
_computing_data_reduction        'SAINT software (Bruker AXS, 2004)'
_computing_molecular_graphics    'DIAMOND (Crystal Impact GbR, 2005)'
_computing_structure_refinement  'SHELXL-97 (G. M. Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (G. M. Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 66.67
_diffrn_measured_fraction_theta_full 0.953
_diffrn_measured_fraction_theta_max 0.953
_diffrn_measurement_device_type  'Bruker AXS X8 Proteum'
_diffrn_measurement_method       'CCD \f- and \w-scans'
_diffrn_radiation_monochromator  'focusing multilayer optic'
_diffrn_radiation_source         '0.2 x 2mm^2^ focus rotating anode'
_diffrn_radiation_type           Cu-K\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0657
_diffrn_reflns_av_sigmaI/netI    0.0388
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            18085
_diffrn_reflns_theta_full        66.59
_diffrn_reflns_theta_max         66.59
_diffrn_reflns_theta_min         2.37
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.919
_exptl_absorpt_correction_T_max  1.0
_exptl_absorpt_correction_T_min  0.3001
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker AXS, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.321
_exptl_crystal_description       prism
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.428
_refine_diff_density_min         -0.276
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         2790
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0758
_refine_ls_R_factor_gt           0.0612
_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^)+(0.0809P)^2^+0.6295P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1588
_refine_ls_wR_factor_ref         0.1692
_reflns_number_gt                2124
_reflns_number_total             2790
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt30195d.txt
_cod_data_source_block           6973_4
_cod_original_sg_symbol_Hall     '-p 1'
_cod_original_sg_symbol_H-M      'p -1'
_cod_database_code               7019699