1973
DOI: 10.1021/ja00807a014
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Structure of (tetraphenylporphinato)(carbonyl)(pyridine)ruthenium(II)-1.5-toluene

Abstract: stretching frequencies are high, indicating that tt back-bonding may be minor, a similar argument may be used. On replacing the platinum methyl group trans to the carbonyl by a chloro substituent, v(CO) increases from 2085 to 2104 cm-1 while 5C(Carbonyi) changes from 178.7 to 159.3 ppm. Concomitant with the in-8583 creased carbon-oxygen bond order is an increased paramagnetic screening of the carbon nucleus.

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Cited by 65 publications
(34 citation statements)
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“…The only other sixcoordinate Ru(I1) porphyrin structures of which we are aware are those of Ru(OEP)py2 (15), Ru(TPP)(CO)py (18), and Ru(TPP)(CO)(EtOH) (10). The average Ru-P distance of 2.428 A found in the present structure is typical for trans P 'The structure factor table and Tables 4, 5 (7) 1543 (6) 6373(4) 124 C (36) 7810 (9) 1965 (8) 698 l (5) 193 "Disordered methyls; occupancy ratio is 44(1)/56(1) for the individual pairs: C(32)/C(32') and C(34')/C (34).…”
Section: Structzlre Descriptiotzmentioning
confidence: 99%
“…The only other sixcoordinate Ru(I1) porphyrin structures of which we are aware are those of Ru(OEP)py2 (15), Ru(TPP)(CO)py (18), and Ru(TPP)(CO)(EtOH) (10). The average Ru-P distance of 2.428 A found in the present structure is typical for trans P 'The structure factor table and Tables 4, 5 (7) 1543 (6) 6373(4) 124 C (36) 7810 (9) 1965 (8) 698 l (5) 193 "Disordered methyls; occupancy ratio is 44(1)/56(1) for the individual pairs: C(32)/C(32') and C(34')/C (34).…”
Section: Structzlre Descriptiotzmentioning
confidence: 99%
“…Since the nitrogen atom of the NH3 ligand is tetrahedrally coordinated while that of the imidazole ligand is trigonally coordinated we estimate that the radius of the former is some 0.06 A larger than that of the latter. Such an estimate, based on comparable differences between the sf/sp 3 radius of the carbon atom, ignores possible differences in pK,, n-bonding abilities, and other electronic properties of the two bases (Little & Ibers, 1973a). The fact, then, that the Co-N(ax) distance is 1.93 A in Co(TPP)(Im)z +, the same as the Co-N(sp 3) distance in Co(NH3)63+, strongly suggests that there is a steric interaction between the imidazole group and the porphyrin ring.…”
Section: Structural Results and Intereomparisonsmentioning
confidence: 99%
“…ethanol), which can be easily replaced by a stronger σ and/or π‐donor ligand (e.g. pyridine, imidazole) . The axial Ru–N(pyridyl) bond is relatively strong and inert .…”
Section: Introductionmentioning
confidence: 99%
“…pyridine, imidazole). [13][14][15] The axial Ru-N(pyridyl) bond is relatively strong and inert. [16] For this reason, ruthenium porphyrins and pyridyl ligands have been largely exploited as building blocks in the construction of supramolecular assemblies by us and by others.…”
Section: Introductionmentioning
confidence: 99%