(E)- and {(Z)-2-[α,β-bis(methoxycarbonyl)vinyl]cyclopentadien-1- ylidene}triphenylphosphorane
Gilheany, Declan G.; Higham, Lee J.; Kelly, P. Gabriel; Mueller-Bunz, Helge; Acta Crystallographica, Section C 60 (2004) o308–o311; doi:10.1107/S0108270104006067

data_2013945
_publ_section_title
;
(E)- and {(Z)-2-[\a,\b-bis(methoxycarbonyl)vinyl]cyclopentadien-1-
ylidene}triphenylphosphorane
;
_journal_name_full               'Acta Crystallographica, Section C'
_journal_page_first              o308
_journal_page_last               o311
_journal_paper_doi               10.1107/S0108270104006067
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C29 H25 O4 P'
_chemical_formula_moiety         'C29 H25 O4 P'
_chemical_formula_sum            'C29 H25 O4 P'
_chemical_formula_weight         468.46
_chemical_melting_point          517
_chemical_name_common
;
Z-2-(\a,\b-Dicarbomethoxyvinyl)cyclopentadien-1-ylidenetriphenylphosphorane
;
_chemical_name_systematic
;dimethyl
(Z)-1-[2-(triphenylphosphoranylidene)cyclopentadien-1-yl]ethylenedicarboxylate
;
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 107.914(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.7622(15)
_cell_length_b                   11.8849(13)
_cell_length_c                   15.8788(17)
_cell_measurement_reflns_used    5590
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.31
_cell_measurement_theta_min      2.31
_cell_volume                     2471.3(5)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT (Bruker, 2001)'
_computing_molecular_graphics
' SHELXTL (Sheldrick, 2002) and ORTEPIII (Burnett & Johnson, 1996)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0273
_diffrn_reflns_av_sigmaI/netI    0.0183
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            43496
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         2.31
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.144
_exptl_absorpt_correction_T_max  0.9500
_exptl_absorpt_correction_T_min  0.8768
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2002)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.407
_refine_diff_density_min         -0.156
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     407
_refine_ls_number_reflns         6129
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0582
_refine_ls_R_factor_gt           0.0483
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.068P)^2^+0.5453P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1198
_refine_ls_wR_factor_ref         0.1270
_reflns_number_gt                5100
_reflns_number_total             6129
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fa1050.cif
_cod_data_source_block           IIIa
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_bond_publ_flag' value 'No' changed to 'no' according
to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (62 times).

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

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_bond_publ_flag' value 'No' changed to 'no'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (62
times).

'_geom_angle_publ_flag' value 'No' changed to 'no' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (101
time).

'_geom_torsion_publ_flag' value 'No' changed to 'no'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (74
times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2013945