3,5-Bis(2-hydroxyethyl)-4-oxahexacyclo[5.4.1.0^2,6.0^3,10.0^5,9.0^8,11]dodecane

Abstract

The title mol­ecule, C15H20O3, exhibits C—C bond lengths that deviate from normal values. A number of long and short C—C bonds are observed. Neighbouring mol­ecules inter­act via strong O—H⋯O hydrogen bonds, forming two‐dimensional hydrogen‐bonded sheets.

8,11-Dihydroxypentacycloundecane-8,11-lactam

“…1). A number of publications have focused on the molecular geometries of PCU cage derivatives (Flippen-Anderson et al, 1991;Linden et al, 2005;Kruger et al, 2005), and it has been reported that these compounds exhibit C-C bond lengths deviating from the normal value of 1.54 Å .…”

Crystal structures of 3,6-diallyltetracyclo[6.3.0.04,11.05,9]undeca-2,7-dione and 1,7-diallylpentacyclo[5.4.0.02,6. 03,10.05,9]undecane-8,11-dione: allylated caged compounds

“…The C-C strained bond angles in (1) vary from 95.31 (10) to 125.21 (14) , deviating from the ideal tetrahedral angle of 109.5 . Previous studies showed that PCUD caged compounds normally display C-C bond lengths which deviate from expected value of 1.54 Å (Bott et al, 1998;Flippen-Anderson et al, 1991;Linden et al, 2005;Kruger et al, 2005). The structure of (1) also exhibits unusual Csp 3 -Csp 3 single-bond lengths ranging from 1.5092 (19) Å to 1.5935 (19) Å .…”

Benzyl 5-hydroxy-4-oxapentacyclo[5.4.1.02,6.03,10.08,11]dodecane-3-carboxylate

“…For examples of PCU cage structures that exhibit C-C bond lengths that deviate from the normal value, see: Flippen-Anderson et al (1991); Linden et al (2005). For similar structures, see: Kruger et al (2005Kruger et al ( , 2006; Karpoormath et al (2010). Mo K radiation = 0.10 mm À1 T = 173 K 0.34 Â 0.22 Â 0.16 mm…”

“…We have reported the single-crystal X-ray structure of a range of pentacycloundecane (PCU) derivatives. More recently this included an ether diol (Kruger et al, 2005), a mono-ketone ethyl acetate (Kruger et al, 2006) and a mono-ketone diester (Karpoormath et al, 2010). The tile compound is the first example of a PCU derivative X-ray structure report containing an ether, ester and primary alcohol functional groups (Fig.…”