⁷³Ge Nuclear Magnetic Resonance Spectroscopy of Germanium Compounds

Table 11

Solid state and solution ⁷³Ge NMR data for organogermanes^a.

Compound	Solid state		Solution
	𝛿  ^73Ge (ppm)	𝑣1/2 (Hz)	𝛿  ^73Ge (ppm)	𝑣1/2 (Hz)
Ph4Ge	−32.9	15	−31.6	6.0
(p-Me2NC6H4)4Ge	n/o		−10.3	28
(p-MeOC6H4)4Ge	10.8	48	−11.3	34
(o-MeC6H4)4Ge	−28.2	342	−33.1	18.5
(m-MeC6H4)4Ge	−32.2	391	−32.9	11.4
(p-MeC6H4)4Ge	−32.4	400	−31.6	11.3
(p-PhC6H4)4Ge	−32.1	78	−31.5	12.5
(p-FC6H4)4Ge	−30.5	300	nss
(C6F5)4Ge	−22.0	225	−27.8	12.7
(PhCH2)4Ge	0.14	350	0.04	24.0
(1-adamantyl)4Ge	−24.6	260	nss
Ph2Ge(p-Tol)2	−28.8	450	−31.9	35.6
Ph3Ge(p-Tol)	−26.0	430	−32.5	22.4
(o-Tol)3GeH	n/o		−84	70
(o-MeOCH2C6H4)3GeH	n/o		−85	350

^aReferenced to GeMe₄, data from [16]. n/o: not observed, nss: not sufficiently soluble.