In 1,1'-bis(3-phenylquinoxalin-2-yl)ferrocene dichloromethane solvate, [Fe(C19H13N2)(2)]. 0.9CH(2)Cl(2), the two cyclopentadienyl rings are offset by only 21 degrees from being completely eclipsed, so that the near parallel quinoxalinyl groups exhibit considerable overlap, with an interplanar spacing almost ideal for intramolecular pi-pi stacking interactions. The molecules form columns by means of intermolecular pi-pi stacking interactions.
二茂铁基1,2-二酮FcCOCOR,3 [[Fc =(C 5 H 5)Fe(C 5 H 4)]]可以通过氧化二茂铁FcCoCH 2 R来制备,或更有效地,通过氧化异构酮FcCH来制备。2 COR,2。酮2依次从盐(FCCH容易地合成2 PPH 3)+我-经由酰化盐[FCCH(COR)PPH 3 ] +我- 。卤代头孢菌FcCOCCl x H 3− x(x= 1、2、3,其中x= 2的例子在合成上等同于二酮)是使用CCl x H 3− x COCl / AlCl 3通过二茂铁的Friedel-Crafts酰化反应合成的,但反应是通过两个平行途径进行的,一个给出正常的酰基衍生物FcCOCCl x H 3- x,另一个给出还原的产物FcCOCCl x -1 H 4- x。通过单晶X射线衍射在结构上表征了两个二酮FcCOCOFc 3b和FcCOCOC 6 H 4 Ph 3c。
1,1'-Ferrocenediylbis(2-phenylethanedione): a Three-Dimensional Network Generated by Short C—H.O Hydrogen Bonds
作者:G. Ferguson、C. Glidewell、B. J. L. Royles、D. M. Smith
DOI:10.1107/s0108270196009699
日期:1996.10.15
Molecules of ferrocene-1,1'-diylbis(2-phenylethanedione), [Fe(C13H9O2)(2)], lie across twofold rotation axes. One of the O atoms in each diketone unit acts as an acceptor of two intermolecular C-H ... O hydrogen bonds. Hydrogen bonds employing cyclopentadienyl C-H bonds as donors generate spirals of molecules around the 3(1) axes, while those employing phenyl C-H bonds as donors generate two-dimensional sheets.