Synthesis and Structure of bis(β-Diketiminate) Chromium(II) Complexes
The new ligand 2,4- N,N′- bis(napthylamino)-pent-2-ene (L napth ) ( 1 ) has been synthesized and crystallizes in space group P 2 1 2 1 2 1 with crystal cell parameters a = 8.196(3) Å, b = 9.119(3) Å, c = 25.746(10) Å, V = 1924.3(12) Å 3 and Z = 4. The complexes bis[2,4-pentane- N,N′ -bis(napt...
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| Published in: | Journal of chemical crystallography Vol. 40; no. 1; pp. 67 - 71 |
|---|---|
| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Boston
Springer US
2010
|
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The new ligand 2,4-
N,N′-
bis(napthylamino)-pent-2-ene (L
napth
) (
1
) has been synthesized and crystallizes in space group
P
2
1
2
1
2
1
with crystal cell parameters
a
=
8.196(3) Å,
b
= 9.119(3) Å,
c
= 25.746(10) Å,
V
= 1924.3(12) Å
3
and
Z
= 4. The complexes bis[2,4-pentane-
N,N′
-bis(napthyl)ketiminato] chromium(II) (
2
), bis[2,4-pentane-
N,N′
-bis(isopropylphenyl)ketiminato] chromium(II) (
3
), and bis[2,4-pentane-
N,N′
-bis(tertbutylphenyl)ketiminato] chromium(II) (
4
) were synthesized and structurally characterized. Complex
2
, the first complex reported with a bis(napthyl) β-diketiminate ligand, crystallizes in space group
P
− 1 with crystal cell parameters
a
= 12.0824(15) Å,
b
= 12.2462(16) Å,
c
= 14.8975(19) Å, α = 87.035(2)°, β = 80.615(2)°, γ = 62.756(2)°,
V
= 1932.9(4) Å
3
and
Z
= 2. Complex
3
crystallizes in space group
P
2
1
/
n
with crystal cell parameters
a
= 13.088(3) Å,
b
= 22.222(5) Å,
c
= 14.206(3) Å, β = 102.310(4)°,
V
= 4036.6(17) Å
3
and
Z
= 4. Complex
4
crystallizes in space group
P
2
1
/
n
with crystal cell parameters
a
= 20.831(6) Å,
b
= 11.575(4) Å,
c
= 21.373(7) Å, β = 107.241(5)°,
V
= 4922(3) Å
3
and
Z
= 4. The degree of twist between the ligand planes is dependent on the steric bulk of the ligand.
Graphical Abstract
Three bis(β-diketiminate) chromium(II) complexes have been synthesized and structurally characterized. The degree of twist between the ligands was observed to be dependent on the steric bulk of the ligand. |
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| ISSN: | 1074-1542 1572-8854 |
| DOI: | 10.1007/s10870-009-9627-8 |