No abstract

The crystal structure of a bidentate hydridotris(pyrazo1-l-y1)borate complex with platinum(I1) is reported.

No abstract

The structure of exo-7-chloro-7-phenyl-2,5-dioxabicyclo[4,1,O]heptane has been determined by singlecrystal X-ray diffraction methods. The crystals are monoclinic, P21/n with a= 5"840 (1), b= 16.039 (1), c= 10"692 (1)A, fl=90"919 (6) ° and Z=4. Intensity data were collected on a manually operated diffractometer using Cu K~ radiation. The structure was solved by direct methods and has been refined by block-diagonal least-squares techniques to R = 0"068 (weighted R = 0"056) including all the hydrogen atoms. The geometry of the cyclopropyl ring is normal. The dioxanyl ring has adopted an envelope conformation in which three of the C-O distances are significantly shortened. This unusual geometry of the six-membered ring is the consequence of the strain introduced by fusion of the three-membered and six-membered rings.

No abstract