寻找懂英语翻译的!Table1comparessomeimportantdistancesinthemolecules.ConnectorSize.Theresultspermitafairlyaccurateextrapolationtoestimateconnectorsize.Theexpectedradiusofthepyridine-andbipyridine-containingconnectorsi
寻找懂英语翻译的!
Table1comparessomeimportantdistancesinthe
molecules.
ConnectorSize.Theresultspermitafairlyaccurate
extrapolationtoestimateconnectorsize.Theexpected
radiusofthepyridine-andbipyridine-containingconnectors
isabout14.3and18.5Å,respectively.However,
becauseofthelocationofthebindingsites,theeffective
separationofametalsitefromthecenterofthemolecule
islargerinthepyridine-terminatedthaninthebipyridine-
terminatedstructureandis16.9and15.0Å,respectively.
Theresultisimportantfortheestimationofdistances
inpotentialmolecularstructuresbuiltwiththeconnectors.
Forexample,thebipyridylandbipyrimidineunits
complexwelltomercuryatoms15andwearehopingto
exploitsuchcomplexationinmolecularconstruction.
TheX-raystructuresofthecompoundsalsoprovide
additionaldataconcerningtheuseofbicyclo[1.1.1]-
pentanemodulesinmolecularrods.Thepresentlyobserved
distancesbetweenbridgeheadcarbonatoms(1.87-
1.88Å)aresomewhatlongerthantheaverageforallsuch
distancesintheCambridgedatabase(1.81Å).14Of
course,thiscarbon-carbonbonddistanceislongwhen
comparedtothe“parentmodule”,[1.1.1]propellane,
whereitisonly1.587Å.53