#------------------------------------------------------------------------------
#$Date: 2016-02-19 14:29:56 +0000 (Fri, 19 Feb 2016) $
#$Revision: 176759 $
#$URL: svn://www.crystallography.net/cod/cif/2/00/51/2005168.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2005168
loop_
_publ_author_name
'P\`epe, G.'
'Astier, J.-P.'
'Lamarque, L.'
'M\'eou, A.'
'Brun, P.'
_publ_section_title
;
 \g-Lactones: Methyl
 11-Oxa-10-oxobicyclo[6.3.0]undec-4-ene-9-carboxylate, Methyl
 11-Oxa-10-oxobicyclo[6.3.0]undec-2-ene-9-carboxylate and Methyl
 9-Oxa-10-oxobicyclo[6.3.0]undecane-11-carboxylate
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1695
_journal_page_last               1699
_journal_paper_doi               10.1107/S010827019600193X
_journal_volume                  52
_journal_year                    1996
_chemical_formula_analytical     'C12 H16 O4'
_chemical_formula_structural     'C12 H16 O4'
_chemical_formula_sum            'C12 H16 O4'
_chemical_formula_weight         224.3
_chemical_melting_point          356.15
_chemical_name_common            \g-Lactone
_chemical_name_systematic
' methyl 11-oxa-10-oxobicyclo[6.3.0]undec-4-ene-9-carboxylate'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_cell_angle_alpha                90.00
_cell_angle_beta                 100.45(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.116(2)
_cell_length_b                   23.074(4)
_cell_length_c                   7.266(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293
_cell_measurement_theta_max      45
_cell_measurement_theta_min      15
_cell_volume                     1173.2(5)
_computing_cell_refinement       'CAD4 Software'
_computing_data_collection       'CAD4 Software (Enraf-Nonius, 1977)'
_computing_data_reduction        'DATARED (P\`epe, 1979)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'AME (Software Systems, 1986)'
_computing_structure_refinement  'SHELX76 (Sheldrick, 1976)'
_computing_structure_solution    'MULTAN80 (Main et al., 1980)'
_diffrn_ambient_temperature      293
_diffrn_measurement_device       'Enraf-Nonius CAD4'
_diffrn_measurement_method       \q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.028
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2760
_diffrn_reflns_reduction_process 'SDP system'
_diffrn_reflns_theta_max         45
_diffrn_reflns_theta_min         2
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.79
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.27
_exptl_crystal_density_meas      1.28(2)
_exptl_crystal_density_method    flotation
_exptl_crystal_description       'square prisms'
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.3
_refine_diff_density_max         .22
_refine_diff_density_min         -.18
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   0.64
_refine_ls_goodness_of_fit_obs   0.64
_refine_ls_hydrogen_treatment
;H atoms placed in theoretical positions with bond lengths 1\&A and U =
0.05A^2^
;
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     145
_refine_ls_number_reflns         1756
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.64
_refine_ls_restrained_S_obs      0.64
_refine_ls_R_factor_all          .0424
_refine_ls_R_factor_obs          .0424
_refine_ls_shift/esd_max         .11
_refine_ls_shift/esd_mean        .11
_refine_ls_structure_factor_coef F
_refine_ls_weighting_scheme      unit
_refine_ls_wR_factor_all         .0424
_refine_ls_wR_factor_obs         .0424
_reflns_number_observed          1756
_reflns_number_total             2488
_reflns_observed_criterion       refl_obs_if_I_>_3.0_sigma(I)
_cod_data_source_file            pa1219.cif
_cod_data_source_block           II
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '83.0 C' was changed to '356.15' - it
was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1173.3(4)
_cod_original_sg_symbol_H-M      P21/a
_cod_database_code               2005168
loop_
_symmetry_equiv_pos_as_xyz
+x,+y,+z
1/2-x,1/2+y,-z
-x,-y,-z
1/2+x,1/2-y,+z
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
C1 0.0372(11) 0.0202(10) 0.0472(12) -0.0013(8) -0.0017(9) -0.0019(8)
C2 0.0506(15) 0.081(2) 0.0453(14) -0.0149(14) 0.0143(11) -0.0008(13)
C3 0.0555(18) 0.104(3) 0.105(3) -0.0069(18) 0.0284(18) 0.033(2)
C4 0.0457(17) 0.075(2) 0.135(3) -0.0017(16) 0.018(2) 0.012(2)
C5 0.064(2) 0.0485(18) 0.113(3) -0.0233(15) -0.0233(19) 0.0137(18)
C6 0.079(2) 0.0478(18) 0.129(3) 0.0045(16) -0.003(2) -0.0299(19)
C7 0.0755(19) 0.0490(15) 0.0466(14) -0.0147(13) 0.0032(13) -0.0108(12)
C8 0.0477(13) 0.0274(11) 0.0467(12) -0.0120(10) -0.0055(10) -0.0019(9)
O9 0.0590(10) 0.0384(9) 0.0388(8) -0.0165(8) -0.0045(7) 0.0036(7)
C10 0.0372(11) 0.0235(11) 0.0516(13) -0.0009(9) -0.0078(9) -0.0057(9)
C11 0.0325(10) 0.0194(10) 0.0474(12) 0.0005(8) 0.0128(9) -0.0033(8)
O12 0.0726(12) 0.0580(12) 0.0562(11) -0.0361(10) 0.0038(9) 0.0005(9)
C13 0.0463(13) 0.0551(15) 0.0277(10) 0.0153(11) 0.0047(9) 0.0055(10)
O14 0.0889(15) 0.0473(11) 0.0735(13) 0.0138(10) -0.0440(11) -0.0017(10)
O15 0.0618(11) 0.0381(9) 0.0526(10) -0.0090(8) -0.0140(8) -0.0125(8)
C16 0.0549(15) 0.0797(19) 0.0309(12) -0.0056(14) -0.0158(11) -0.0101(12)
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_thermal_displace_type
_atom_site_calc_flag
_atom_site_type_symbol
C1 .5645(3) .3740(1) .9586(3) 0.04(1) Uani d C
C2 .7313(4) .3744(1) .8564(4) 0.06(1) Uani d C
C3 .8612(4) .4289(2) .8865(5) 0.09(2) Uani d C
C4 .9893(4) .4291(2) 1.0760(6) 0.09(2) Uani d C
C5 .9370(5) .4464(1) 1.2307(6) 0.08(2) Uani d C
C6 .7482(5) .4692(1) 1.2421(6) 0.09(2) Uani d C
C7 .6038(4) .4209(1) 1.2891(4) 0.06(1) Uani d C
C8 .6070(3) .3667(1) 1.1720(3) 0.04(1) Uani d C
O9 .4509(2) .3313(1) 1.2182(2) 0.05(1) Uani d O
C10 .3529(3) .3056(1) 1.0663(3) 0.04(1) Uani d C
C11 .4318(3) .3230(1) .8969(3) 0.03(1) Uani d C
O12 .2218(3) .2740(1) 1.0780(3) 0.06(1) Uani d O
C13 .2766(3) .3336(1) .7261(3) 0.04(1) Uani d C
O14 .2322(3) .3817(1) .6690(3) 0.08(1) Uani d O
O15 .1942(2) .2862(1) .6541(2) 0.05(1) Uani d O
C16 .0418(4) .2933(1) .4936(3) 0.06(1) Uani d C
H1 .496 .412 .938 ? ? ? ?
H21 .680 .371 .721 ? ? ? ?
H22 .813 .340 .900 ? ? ? ?
H31 .781 .464 .876 ? ? ? ?
H32 .943 .428 .788 ? ? ? ?
H4 1.123 .415 1.082 ? ? ? ?
H5 1.029 .444 1.349 ? ? ? ?
H61 .683 .488 1.124 ? ? ? ?
H62 .757 .499 1.347 ? ? ? ?
H71 .468 .437 1.267 ? ? ? ?
H72 .637 .411 1.426 ? ? ? ?
H8 .734 .349 1.212 ? ? ? ?
H11 .504 .290 .854 ? ? ? ?
H161 -.064 .318 .529 ? ? ? ?
H162 .091 .313 .389 ? ? ? ?
H163 -.013 .255 .448 ? ? ? ?
loop_
_atom_type_symbol
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
O .047 .003 International_Tables_Vol_IV_Table_2.3.1
C .000 .001 International_Tables_Vol_IV_Table_2.3.1
H .000 .000 International_Tables_Vol_IV_Table_2.3.1
loop_
_diffrn_standard_refln_index_h
_diffrn_standard_refln_index_k
_diffrn_standard_refln_index_l
2 -1 3
4 -4 2
0 5 3
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_publ_flag
C2 C1 C8 118.0(2) yes
C8 C1 C11 102.2(2) yes
C1 C2 C3 115.9(2) yes
C2 C3 C4 112.2(3) yes
C3 C4 C5 124.5(3) yes
C4 C5 C6 124.5(3) yes
C5 C6 C7 113.3(2) yes
C6 C7 C8 112.4(2) yes
C1 C8 C7 117.2(2) yes
C1 C8 O9 105.9(2) yes
C7 C8 O9 104.0(2) yes
C8 O9 C10 111.3(2) yes
O9 C10 C11 110.1(2) yes
C11 C10 O12 129.3(2) yes
O9 C10 O12 120.6(2) yes
C1 C11 C10 105.7(2) yes
C1 C11 C13 115.7(2) yes
C10 C11 C13 112.8(2) yes
C11 C13 O14 122.2(2) yes
C11 C13 O15 113.5(2) yes
O14 C13 O15 124.2(2) yes
C13 O15 C16 116.3(2) yes
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_publ_flag
C1 C2 1.510(3) yes
C1 C8 1.534(3) yes
C1 C11 1.524(3) yes
C2 C3 1.553(4) yes
C3 C4 1.507(5) yes
C4 C5 1.309(5) yes
C5 C6 1.459(4) yes
C6 C7 1.594(4) yes
C7 C8 1.515(3) yes
C8 O9 1.466(3) yes
C10 O9 1.333(3) yes
C10 C11 1.497(3) yes
C10 O12 1.199(3) yes
C11 C13 1.524(3) yes
C13 O14 1.207(3) yes
C13 O15 1.305(3) yes
C16 O15 1.451(3) yes