Molybdenum and Tungsten Tricarbonyl Complexes of Isatin with Triphenylphosphine

Table 2

Important IR data for isatin and its complexes.

Compound	IR data (cm^−1)^a
	𝜈(NH)	𝜈(C=C)+𝛿CH	𝜈(CO)
IsatH	3191(s)	1615(vs),	1748(sh), 1727(vs)
		1461(s)
[Mo(CO)3(isatH)(PPh3)]	3184(w)	1619(s)	2013(m),1943(m), 1887(vs), 1725 (sh), 1703(s)
		1462(m)
		1435(m)
[W(CO)3(isatH)(PPh3)]	3186(m)	1619(m)	1935(m), 1879(s), 1810(w), 1727(s), 1703(s)
		1463(m)
		1435(m)

avs, very strong; s, strong; m, medium; w, weak; sh, shoulder.