Metal complexes with tetrapyrrole ligands

Buchler, Johann W.; Lay, K. Lam; Smith, Paul D.; Scheidt, W. Robert; Rupprecht, G. A.; Kenny, Jonathan E.

doi:10.1016/s0022-328x(00)90164-5

Cited by 42 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average Os−N(por) bond length in (TTP)Os(CO)(Et 2 NNO) is 2.055 Å and lies within the 2.027−2.069 Å range observed for non-nitrosyl Os II porphyrins. ,− The nitrosamine ligand is bound to the Os II center in a η 1 -O fashion. The axial Os−O(nitrosamine) distance is 2.200(7) Å and is identical to the related Ru−O (axial) distance in (OEP)Ru(CO)(Et 2 NNO) (2.199(6) Å).…”

Section: Resultsmentioning

confidence: 56%

“…The Os−C(O) and C−O bond lengths are 1.818(11) and 1.140(12) Å, respectively, and the Os−C−O bond angle is 177.9(10)°. To the best of our knowledge, the structure of (TTP)Os(CO)(Et 2 NNO) is only the second (por)Os(CO)-containing structure to be reported to date, the other being (OEPMe 2 )Os(CO)(py) (Os−C = 1.828(5) Å, C−O = 1.151(7) Å, Os−C−O = 178.9(14)°) . The related phthalocyanine (Pc)Os(CO)(py) complex also has similar Os−CO dimensions (Os−C = 1.83(1) Å, C−O = 1.17(1) Å, Os−C−O = 177(1)°) …”

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Synthesis, Characterization, and Molecular Structures of Diethylnitrosamine Metalloporphyrin Complexes of Iron, Ruthenium, and Osmium

Chen

Wang

et al. 1998

Inorg. Chem.

View full text Add to dashboard Cite

Diethylnitrosamine reacts with [(TPP)Fe(THF)(2)]ClO(4) (TPP = 5,10,15,20-tetraphenylporphyrinato dianion) in toluene to generate the bis-nitrosamine complex, [(TPP)Fe(Et(2)NNO)(2)]ClO(4), in 96% isolated yield. The related [(TTP)Fe(Et(2)NNO)(2)]SbF(6) (TTP = 5,10,15,20-tetra-p-tolylporphyrinato dianion) complex is prepared in 70% isolated yield via a similar reaction in CH(2)Cl(2). Reaction of [(TPP)Fe(Et(2)NNO)(2)]ClO(4) in CH(2)Cl(2) with NO gas results in the displacement of one of the Et(2)NNO ligands to give the air-sensitive and thermally sensitive [(TPP)Fe(NO)(Et(2)NNO)]ClO(4) derivative. Reaction of (OEP)Ru(CO) (OEP = 2,3,7,8,12,13,17,18-octaethylporphyrinato dianion) with NOBF(4) in CH(2)Cl(2) gives [(OEP)Ru(NO)(H(2)O)]BF(4) as the final isolated product (after exposure to air) in 71% isolated yield. The aqua ligand is then displaced by Et(2)NNO in CH(2)Cl(2) to give [(OEP)Ru(NO)(Et(2)NNO)]BF(4) in 82% isolated yield. The valence isoelectronic (OEP)Ru(CO)(Et(2)NNO) compound is prepared in 71% isolated yield by the addition of excess Et(2)NNO to (OEP)Ru(CO) in CH(2)Cl(2). The nitrosyl amine complex [(OEP)Ru(NO)(HNEt(2))]BF(4) is prepared (i) in 78% yield by diethylamine addition to [(OEP)Ru(NO)(H(2)O)]BF(4) or (ii) in 71% isolated yield by diethylamine addition to [(OEP)Ru(NO)(Et(2)NNO)]BF(4). The osmium nitrosamine complexes, (TTP)Os(CO)(Et(2)NNO) and (OEP)Os(CO)(Et(2)NNO), are prepared in 74% and 66% yields, respectively, by diethylnitrosamine addition to the precursor (porphyrin)Os(CO) compounds in CH(2)Cl(2). The nitrosyl [(OEP)Os(NO)(Et(2)NNO)]BF(4) derivative is prepared in quantitative yield (by IR and (1)H NMR spectroscopy) by the reaction of (OEP)Os(CO)(Et(2)NNO) with NOBF(4). Labeling studies using (15)NOBF(4), Et(2)N(15)NO, and Et(2)NN(18)O have been used to assign the nitrosyl and nitrosamine bands in the IR spectra of several of the complexes. The solid-state structures of [(TPP)Fe(THF)(2)]ClO(4), [(TPP)Fe(Et(2)NNO)(2)]ClO(4), [(OEP)Ru(NO)(H(2)O)]BF(4), (OEP)Ru(CO)(Et(2)NNO), and (TTP)Os(CO)(Et(2)NNO) have also been determined by single-crystal X-ray diffraction. The Et(2)NNO ligands display a rare eta(1)-O binding mode in all three nitrosamine complexes.

show abstract

Section: Resultsmentioning

confidence: 56%

Section: Resultsmentioning

confidence: 98%

Synthesis, Characterization, and Molecular Structures of Diethylnitrosamine Metalloporphyrin Complexes of Iron, Ruthenium, and Osmium

Chen

Wang

et al. 1998

Inorg. Chem.

View full text Add to dashboard Cite

show abstract

“…-2713 ( 70) 5537 ( 105) 7985 ( 132) Q(w5) 3167 ( 5) 284 ( 8) 8085 (10) "Experimental conditions: 25 °C; I = 0.15 mol dm'3 (NaC104). 4 Values in parentheses are standard deviations in the last significant figure . [Co(CN)6]37H"L"+ (where L = LI, L2, L3) are reported in Table IV and Table V, respectively. It should be noted that only 1:1 species are formed, and in order to form a "supercomplexed" species, the macrocycle has to be at least tetracharged.…”

Section: H(24)mentioning

confidence: 99%

“…In the case "Experimental conditions: 25 °C, / = 0.15 mol dm" "3 (NaC104). 4 Values in parentheses are standard deviations in the last significant figure. with the smaller macrocycles in which the positive charges are more concentrated and thus more strongly interacting with the anionic species.…”

Section: H(24)mentioning

confidence: 99%