[Fe(NO)2]9 compounds. Two [Fe(NO)2]10 complexes coordinated by the nickel(II) dithiolate, (bismercaptoethanediazacyclooctane)nickel(II), (Ni-1), (Ni-1)Fe(CO)(NO)2 and (Ni-1)Fe(NO)2, were prepared for comparison to the Ni0(NO)+ derivative and other monomeric and homodimetallic derivatives of the Fe(NO)2 fragment. While the oxidation level of Fe(NO)2 is the primary determinant of v(NO) values, they are also highly
[P
PN] [Fe(NO)2(SePh)2](1)与二聚体[Ni(mu-SCH2CH2SCH2CH2S)] 2在另外的
NO2-存在下反应生成中性异双
金属[[ON] Ni [(mu- SCH 2 CH 2)2 S] Fe(NO)2]络合物(2)。1和2的X射线晶体结构显示扭曲的四面体
铁二亚硝基基团,根据Feltham-Enemark表示法指定为[Fe(NO)2]9。Fe-NO键的线性偏离平均约为10度对于化合物1和2,则在2中发现了更线性的Ni-NO配位,Ni-NO距离为1.644(2)A。配合物2的v(NO)值与[Ni(NO )] 9的Ni0(NO)+,类似于类似的膦衍
生物P3Ni0(NO)+。g值= 2.02-2.03的EPR信号证实
硫属元素[Fe(NO)2] 9化合物中存在奇数电子。两个[Fe(NO)2] 10配合物,由二
硫代
镍(II),(双巯基
乙烷二氮杂
环辛烷)
镍(II),(Ni-1