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2 Homometallic Alkoxides

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486<br />

Table 6.5 Metal 8-hydroxyquinolates<br />

Bond length ( ˚A) Bond angle ⊲ Ž ⊳<br />

Compound Aryloxide M–O M–O–Ar Reference<br />

[Be⊲OAr⊳2].2H2O 2Me-8-quin 1.606 (?) 109 i<br />

1.604 (?) 110<br />

[NH4][Yf⊲OAr⊳2NBung].H2O BunN⊲8-quin⊳2 2.289 (?)<br />

2.286 (?)<br />

115<br />

118<br />

ii<br />

[Ti(OAr) 2Cl2]<br />

6-coord. Ti, trans O, cis Cl<br />

8-quin 1.888 (11) 122 iii<br />

[CpTi(OAr) 2Cl] trans O<br />

8-quin 1.954 (7)<br />

1.987 (6)<br />

121<br />

120<br />

iv<br />

[Ti(OAr0 ) 2⊲OAr⊳2] 8-quin 1.953 (6)<br />

1.920 (6)<br />

121<br />

123<br />

v<br />

OC6H3Pri 2-2,6 1.818 (5)<br />

1.813 (6)<br />

160<br />

155<br />

[Ti(OAr) 2⊲OAr 0 ⊳2] 2Me-8-quin 1.911 (6) 123 v<br />

OC6H3Pr i 2<br />

-2,6 1.819 (7) 157<br />

[Zr(OAr) 4].3toluene<br />

dodecahedral Zr<br />

8-quin 2.106 (6) 120 vi<br />

[V(O)(OAr) 2]<br />

tbp, axial N<br />

2Me-8-quin 1.921 (5) 117 vii<br />

[V(O) 2(OAr)(HOAr)].3H2O<br />

tbp, axial N and O of N-protonated quin<br />

2Me-8-quin<br />

H-2Me-8-quin<br />

1.957 (3)<br />

1.931 (3)<br />

121<br />

129<br />

viii<br />

[V(OAr)(L)(OAr 0 )].2MeOH 8-quin 1.841 (4) 124 ix<br />

octahedral V; VDO, quin and azo-N in plane 2-hydroxy-20-carboxy-5-methylazobenzene 1.895 (5) 128<br />

[(O)(di-OAr)V( -O)V(O)(di-OAr)]<br />

2-(20-hydroxyphenyl)-8-quinolinato 1.959 (4)<br />

119<br />

x<br />

tbp V<br />

1.803 (4)<br />

[NBu4][V(O) 2(OAr) 2].6MeCN 8-quin 1.96 (1) 121 xi<br />

trans OAr, N trans to oxo<br />

129

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