shifts of C(2)–C(5) carbon atoms of the series of substituted-cyclopentadienyl Cp(M) derivatives—(CO) 2 Co[η 5 -(C 5 H 4 -sub)] ( 1 – 5 ), (C 4 Ph 4 )Co[η 5 -(C 5 H 4 COOCH 3 )] ( 6 ), (CO) 3 (CH 3 )W[η 5 -(C 5 H 4 -sub)]( 7 – 9 ), (CO) 3 (Cl)W[η 5 -(C 5 H 4 COOCH 3 )] ( 10 ), (CO) 2 (NO)Cr[η 5 -(C 5 H 4 -sub)] ( 11 – 23 ), and (NO) 2 (Cl)Cr[η 5 -(C 5 H 4 COOCH 3 )] ( 24 )—have been assigned using two-dimensional
摘要一系列取代的
环戊二烯基Cp(M)衍
生物-(CO)2 Co [η5-(C 5 H 4 -sub)](1 – 5),(C 4 Ph 4)Co [η5-(C 5 H 4 COOCH 3)](6),(CO)3(CH 3)W [η5-(C 5 H 4 -sub)] [ 7 – 9),(CO)3(Cl)W [η5-(C 5 H 4 COOCH 3)](10),(CO)2(NO)Cr [η5-(C 5 H 4 -sub) ](11 – 23)和(NO)2(Cl)Cr [η5-(C 5 H 4 COOCH 3)](24)-已使用二维HETCOR NMR光谱进行了分配。将指定的
化学位移与它们的
二茂铁类似物的NMR数据进行比较。我们观察到H(3,4)在(CO)2 Co(η5 -C 5 H 4 CHO)1中的共振场比H(2,5)共振的场低。通过X射线衍射研究确定了(CO)3(CH 3)W [η5-(C 5 H